Northampton Bridge ELECTRICAL SPECNorthampton Bridge Lighting
Northampton, MA
ELECTRICAL - 1
SECTION 260000 – ELECTRICAL
PART 1 - GENERAL 3
1.1 GENERAL PROVISIONS 3
1.2 RELATED DOCUMENTS 4
1.3 SCOPE 4
1.4 RELATED WORK SPECIFIED ELSEWHERE 5
1.5 CODES, ORDINANCES AND PERMITS 5
1.6 SUBMITTALS 6
1.7 INSTALLATION OF THE WORK 7
1.8 ENVIRONMENTAL CONDITIONS 7
1.9 PROTECTION 7
1.10 QUALIFICATIONS 8
1.11 REFERENCE TO MATERIALS BY NAME 8
1.12 DRAWINGS AND SPECIFICATIONS 8
1.13 INTERPRETATION OF THE PLANS AND SPECIFICATIONS 9
1.14 ELECTRICAL SYSTEMS IDENTIFICATION 10
1.15 IDENTIFICATION OF CONDUCTORS 11
1.16 ARC FLASH HAZARD WARNING AND ENERGY REDUCING SWITCH 11
1.17 OPERATING PROCEDURE 11
1.18 TEMPORARY LIGHT & POWER 11
1.19 EQUIPMENT CLEARANCES 11
1.20 ANCHORING EQUIPMENT 11
1.21 EQUIPMENT BOLTED CONNECTIONS 12
1.22 PRELIMINARY OPERATION 12
1.23 TESTS PRIOR TO SUBSTANTIAL COMPLETION 12
1.24 VISITING THE SITE 12
1.25 DEMOLITION 13
1.26 DESIGN INTENT 13
1.27 OUTAGES 13
1.28 OPERATING INSTRUCTIONS 13
1.29 RECORD AND AS BUILT DRAWINGS 14
1.30 GUARANTEE 14
PART 2 - PRODUCTS 15
2.1 WIREWAYS 15
2.2 RACEWAYS AND WIRING SYSTEMS 15
2.3 CONDUCTORS 16
2.4 PULL BOXES 17
2.5 BOXES AND FITTINGS 17
2.6 JUNCTION BOXES 17
2.7 SUPPORTING DEVICES 17
2.8 DISCONNECT SWITCHES 18
2.9 WIRING DEVICES AND PLATES 18
2.10 SURGE SUPPRESSION UNIT AT SERVICE ENTRANCE 19
2.11 SURGE SUPPRESSION FOR COMMUNICATIONS 22
2.12 MAIN PANELBOARD 22
2.13 LIGHT FIXTURES 22
2.14 CLIMATE CONTROLLED CABINET 25
2.15 DATA SYSTEMS 25
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2.16 RELAYS 26
2.17 VIBRATION ISOLATION AND SEISMIC RESTRAINTS 27
2.19 PAINTS AND COATINGS 29
2.20 COMPOSITE WOOD AND AGRIFIBER 30
2.21 ADHESIVES AND SEALANTS, 30
PART 3 - EXECUTION 31
3.1 MECHANICAL EQUIPMENT 31
3.2 WORKMANSHIP 31
3.3 GROUNDING 32
3.4 INSTALLATION OF CONDUITS AND FITTINGS 35
3.5 OUTLET AND JUNCTION BOXES 38
3.6 REQUIREMENTS GOVERNING ELECTRIC WORK IN DAMP OR WET
LOCATIONS WITHIN BUILDING CONFINES 38
3.7 TESTS 39
3.8 LIGHTING FIXTURES 39
3.9 JUNCTION BOXES FEEDING LIGHT FIXTURES 40
3.10 JUNCTION BOXES FOR HOMERUNS 40
3.11 FIRESAFING AND SMOKE SEAL 40
3.12 SPLICES 41
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SECTION 260000 – ELECTRICAL
PART 1 - GENERAL
1.1 GENERAL PROVISIONS
A. The drawings and conditions of the Contract, including General and
Supplementary Conditions, and all Division 1 sections, apply to the work of this
Section. Work to be done under this Section is shown on the contract drawings
listed at the front of the specifications. The listing of Contract drawings and
Specifications shall not limit the Sub-Contractors responsibility to determine the
full extent of his work as required by all Contract drawings and Specifications.
B. Time, manner and requirements for bidding filed sub-bids
1. Sub-bids for work under this Section shall be for the complete work and shall
be filed in a sealed envelope with the Awarding Authority at a time and place
as stipulated in the “NOTICE TO CONTRACTORS”
a The following shall appear on the upper left hand of the envelope:
b NAME OF SUB-BIDDER: ____________________________
c NAME OF PROJECT: _______________________________
d SUB-BID FOR SECTION: 260000 – ELECTRICAL ____
2. Each sub-bid submitted for work under this Section shall be on forms
furnished by the Awarding Authority, as required by Section 44F of Chapter
149 of the General Laws, as amended. Sub-Bid forms may be obtained at the
office of the Awarding Authority or Architect, or may be obtained by written
request.
3. Sub-bids filed with the Awarding Authority shall be accompanied a by a BID
BOND or CASH or CERTIFIED CHECK or a TREASURERS or
CASHIERS CHECK issued by a responsible bank or trust company payable
to the (insert Owner’s name) in the amount of 5 percent of the bid. A sub-bid
accompanied by any other form of bid deposit than those specified will be
rejected.
C. Sub-sub-bid Requirements:
1. The Sub-Bidder shall list in Paragraph E of the FORM for SUB-BID the name
and bid price of each person, firm or corporation performing each class of work
or part thereof for which (the Section of the Specifications for that sub-trade)
requires such listing; provided that, in the absence of a contrary provision in the
Specifications, any Sub-Bidder may, without listing any bid price, list his own
name in said paragraph E for any such class of work or part thereof and perform
that work with persons on his own payroll, if such Sub-Bidder, after Sub-Bid
openings, shows to the satisfaction of (insert Owner’s name) that he does
customarily perform such class of work or the part thereof with persons on his
own payroll and is qualified so to do. This Section of the Specifications requires
that the following classes of work shall be listed in Paragraph E under the
conditions indicated herein.
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1.2 RELATED DOCUMENTS
A. The GENERAL DOCUMENTS, as listed on the Table of Contents, and
applicable parts of Division 1, GENERAL REQUIREMENTS, shall be included
in and made a part of this Section.
B. If an item or material of this trade is indicated in the drawings but not specifically
listed in this Section, provide such item or material at a standard of quality equal
to the standard established for the balance of the Work Specified, in accordance
with the Architect’s interpretation.
C. In case of an inconsistency between Drawings and Specifications, or within
either Document not clarified by addendum, the better quality or greater quantity
of Work shall be provided, in accordance with the Architect’s interpretation.
(See Article One of the general and Supplementary General Conditions.)
D. The word `provide’ used elsewhere in these specifications or on the drawings
shall be taken to mean furnish, move into place, install and connect (wire). Refer
to ‘INTERPRETATION OF THE PLANS AND SPECIFICATIONS.’
1.3 SCOPE
A. The Contractor under this section shall furnish all labor, materials, appliances
and equipment necessary to perform all electrical work, complete in strict
accordance with this section of the specifications and applicable drawings and
subject to the terms and conditions of the contract. All equipment and materials
shall be new.
B. The work referred to under this division includes all labor, materials and
equipment, rigging, and transportation for the satisfactory installation and
completion of all work referred to herein and/or as may be shown on the contract
drawings and not specifically mentioned in this division.
C. The following schedule is part, but not necessarily all-inclusive, of the items in
this division of the contract:
1. Furnish and install new electric service including Secondary system conduits
and conductors from the pole, main panelboard, and new grounding system.
2. The owner will pay all utility company charges.
3. Furnish and install new main panel, SPD device, meter socket, and Circuit
Breakers.
4. Furnish and install new Panelboards complete with Circuit Breakers.
5. Furnish and install new feeders and branch circuits.
6. Furnish and install new junction boxes and pull boxes.
7. Furnish and install new light fixtures, power supplies, controllers, gateways,
etc.
8. Furnish and install new wiring devices, wall plates and branch circuit wiring.
9. Furnishing, installation and connections of all lighting fixtures and lamps,
including contactors, time switches and other required control equipment as
shown on the drawings.
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10. Make final connections of power and/or control wiring as required by
existing equipment.
11. Furnish and install new Data outlets with conduits and pull wires.
12. Furnish and install Heavy duty fused safety switches. Switches shall be
Nema-1 for indoor applications and Nema-3R for outdoor applications.
13. Furnish and install a climate controlled NEMA 3R enclosure for the lighting
controls.
14. Furnish and install a new NEMA 3R enclosure for the new main panel.
15. Provide all sleeves, hangers, supports, inserts, anchors, bolts, etc., required
for the installation of this work
16. Calculations for lighting substitutions. Provide all required lighting
calculations for review and approval by the engineer to conform with the
basis of design.
17. Temporary light and power service, lighting outlets, lamps, receptacles, and
wiring for construction lighting and power
18. Test of all electrically operated equipment.
19. Guarantee
D. The above list is given to acquaint the contractor with the general phase of the
work included, but it is not intended to cover all items which are described
hereinafter. All of the work of the Contractor shall be complete and in
accordance with the true intent and meaning of the drawings and specifications.
1.4 RELATED WORK SPECIFIED ELSEWHERE
A. The following items of work, associated with the electrical work, will be performed
in accordance with other sections of these specifications.
1. Excavation, and backfill, except as hereinafter specified.
2. All cutting, patching, preparation and painting of finish work
3. Any drilling of holes through walls, floors or structural members
4. The Mechanical Contractors shall furnish all of their equipment complete
and ready for wiring by the Electrical Subcontractor, complete with wiring
diagrams where applicable - Section 230000
B. The electrical contractor shall provide all work as described in the following
sections:
1.5 CODES, ORDINANCES AND PERMITS
A. Comply with all codes and ordinances applying to this work. Bidders shall
inform themselves of Code requirements. In case of conflict between the
contract documents and a governing code or ordinance, the higher standard shall
govern.
B. All permits and fees required shall be obtained and paid for by the Electrical
Subcontractor.
C. Particular attention is directed to:
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1. State of Massachusetts 2020 Electric Code.
2. Local Electric Wiring Ordinance.
3. National Fire Protection Organization.
4. Requirements of City of Northampton.
1.6 SUBMITTALS
A. Submit shop and erection drawings and descriptive and supportive literature for
all work in accordance with the General Conditions. Approval by the
Architect/Engineer must be obtained prior to delivery of materials to the site.
B. No fabrications, ordering, delivery to the site or other steps shall be taken with
respect to those items requiring shop drawings or manufacturer's detail drawings
to be submitted or submittals of information for review, all to the Architect, until
returned such to the submitter carrying either the notation "Approved" or
"Approved as Corrected" as indicated by the Architect or his Engineer. An
"Approved as Corrected" notation means that changes as indicated must be
incorporated or the qualifying acceptance will be considered void.
C. Corrections or comments made on the shop drawings during the review do not
relieve the Contractor of his responsibility to comply with the requirements of the
drawings and specifications. This review is only to check for general
conformance with the design concept of the project and general compliance with
the Contract Documents. The Contractor remains responsible for: Confirming
and correlating all dimensions and quantities; selecting fabrication processes and
techniques of construction; coordinating the work of the trades; and performing
the work in a safe and satisfactory manner.
D. Shop drawings listing various manufacturers to be considered subject to
availability are not acceptable and will be rejected.
E. Within thirty (30) days of award of contract this Subcontractor shall submit for
the Architect/Engineer's approval, six (6) copies of the manufacturer's shop
drawings, clearly high lighting each item with types, sizes, catalog numbers etc.,
detail prints, and data sheets for the following items:
1. Main panel complete with all Circuit Breakers, SPD, meter socket, rating,
etc.
2. Panel boards and Circuit Breakers.
3. Conduits and conductors.
4. Light fixtures. Each fixture shall clearly indicate the load of the fixture
including the driver and the led array to be installed measured in Watts. Any
fixtures without this information will be rejected.
5. Heavy Duty Disconnect switches.
6. Wiring devices.
7. Lighting controls and power supplies.
8. Underground pull boxes with covers.
9. Low emitting Adhesives and Sealants. VOC levels must be indicated on the
manufacturer’s literature.
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10. Low emitting Fire Stopping and Smoke Sealing. VOC levels must be
indicated on the manufacturer’s literature.
11. Low emitting Paints and Coatings. VOC levels must be indicated on the
manufacturer’s literature.
12. Low emitting Composite wood. Manufacturer’s literature must state that no
added urea formaldehyde is used in the product.
1.7 INSTALLATION OF THE WORK
A. Examine the site and all the drawings before proceeding with the layout and
installation of this work.
B. Verify all conditions and measurements in the field.
C. It is not the intention of the drawings to show every item, piece of equipment,
and detail to provide complete operating systems.
D. Install work as closely as possible to layouts shown on drawings. Modify work
as necessary to meet job conditions and to clear other equipment. Consult
Architect before making changes, which affect its function or appearance of
systems.
E. Dimensions, elevations and locations are shown approximately. Verify measures
in field.
F. Architect reserves the right to order changes in layout of such items as switches,
fixtures and outlets if such changes do not substantially affect costs and if
affected items have not been fabricated or installed.
G. In some cases, drawings are based on products of one manufacturer, as listed on
the drawings and specifications. Contractors shall be responsible for
modifications made necessary by substitution of products of other manufacturers.
H. Coordinate work with work specified in other sections. Relocate work if
required for proper installation and functioning of other systems.
I. Install products in accordance with manufacturers’ instructions. Notify Architect
if contract documents conflict with manufacturers’ instructions. Comply with
Architect’s interpretations.
J. Provide brackets, supports, anchors, and frames required for installation of work
specified in this division.
K. Do not install part of a system until all critical components of the system and
related system have been approved. Coordinate parts of system.
1.8 ENVIRONMENTAL CONDITIONS
A. Tools, Scaffolding, Etc: All necessary tools, machinery, scaffolding and
transportation for completion of this contract shall be provided by the Electrical
Contractor.
B. Waste Material: All rubbish created by the Electrical Contractor shall be
removed by the Electrical Contractor.
1.9 PROTECTION
A. The Electrical Contractor shall, at all times, fully protect his work and materials
from injury or loss to others. Any injury or loss, which may occur, shall be made
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without expense to the Owner. The Electrical Contractor shall be responsible for
the proper protection of his materials until the building is accepted by the Owner.
1.10 QUALIFICATIONS
A. Materials and workmanship shall be the best of their respective kinds and in full
accordance with the most modern construction methods. Electrical materials and
equipment of types, for which there are Underwriters Laboratories Standards,
shall conform to their requirements and be so labeled.
1.11 REFERENCE TO MATERIALS BY NAME
A. Specific reference in the specification, or on contract drawings, to any article,
device, product, material, fixture, form, or type of construction, etc., by name,
make or catalog number shall be interpreted as establishing a standard of quality,
and shall not be construed as limiting the competition. The Contractor may at his
option use any article, device, product, material, fixture, form or type of
construction which, in the judgment of the Architect/ Engineer, is equal to that
named. Approval for any manufacturer's product not specifically mentioned
shall be obtained as described below.
B. If the Contractor intends to provide equipment, products or materials by an
alternate manufacturer not listed as an equal, the alternate manufacturer must be
approved by the Engineer prior to the close of bidding. An Addendum will be
issued to allow all bidders the opportunity to bid using approved alternate
manufacturers. Equipment cuts of "both" the specified manufacture and the
alternate manufacture shall be provided to the Engineer by the Electrical
Contractor. The above cuts shall be in the possession of the Engineer a minimum
of ten days prior to the close of bids. The Engineer reserves the right to reject
any submittals of alternate manufacturers if the above provisions are not
complied with "in full".
1.12 DRAWINGS AND SPECIFICATIONS
A. The Electrical Contractor shall refer to the drawings for a full comprehension of
the work to be done and for conditions affecting the locations and placements of
his equipment and materials. These drawings are intended to be supplementary
to the specifications, and any work indicated, mentioned or implied in either is to
be considered as specified by both. Should the character of the work herein
sufficiently explained in the specifications or drawings, the Electrical
Subcontractor may apply to the Architect/Engineer for further information and
shall conform to such when given as it may be consistent with the original intent.
The Architect/Engineer reserves the right to make any reasonable changes in
location prior to installation at no expense to the Owner. All items are
diagrammatic and exact locations are subject to the approval of the
Architect/Engineer.
B. It is intended that outlets shall be located symmetrical with architectural elements
notwithstanding the fact the locations shown on the drawings may be distorted
for clearness in representation..
C. Discrepancies between different drawings, between drawings and actual field
conditions or between drawings and specifications, affecting the progress of the
work, shall be promptly brought to the attention of the Owner’s representative for
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decision, and all work on affected areas shall be stopped, subject to resolution of
the conflict.
1.13 INTERPRETATION OF THE PLANS AND SPECIFICATIONS
A. As used in the plans and specifications for electrical work, certain non-technical
words shall be understood to have specific meanings as follows regardless of
indications to the contrary in the general conditions or other documents
governing the electrical work.
1. "Furnish" Purchase and deliver to the project site complete with
every necessary appurtenance and support, all as part of
the electrical work. Purchasing shall include payment of
all sales taxes and other surcharges as may be required to
assure that purchased items are free of all liens, claims or
encumbrances.
2. "Install" Unload at the delivery point at the site and perform
every operation necessary to establish secure mounting
and correct operation at the proper location in the
project, all as part of the electrical work.
3. "Provide" "Furnish" and "Install".
4. "New" Manufactured within the past two years and never before
used.
5. "Area Served" The physical location in the building where the wiring
device, lighting fixture or utilization equipment is
located.
6. "Homerun" The run of conduit and wire between the panelboard
overcurrent device and the 1st wiring device, lighting
fixture or utilization equipment served by the branch
circuit.
B. Except where modified by a specific notation to the contrary, it shall be
understood that the indication and/or description of any electrical item in the
plans or specifications for electrical work carries with it the instruction to furnish,
install and connect the item as part of the electrical work, regardless of whether
or not this instruction is explicitly stated.
C. It shall be understood that the specifications and plans for electrical work are
complimentary and are to be taken together for a complete interpretation of the
electrical work except those indications on the plans, which refer to an individual
element of work, take precedence over the specifications where they conflict with
same.
D. To the extent that they govern the basic work, the specifications also govern
change order work.
E. The plans for electrical work utilize symbols and schematic diagrams which have
no dimensional significance. The work shall, therefore, be installed to fulfill the
diagrammatic intent expressed on the electrical plans, but in conformity with the
dimensions indicated on the final working plans, field layouts and shop plans of
all trades.
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F. Certain details appear on the plans for electrical work which are specific with
regard to the dimensioning and positioning of the work. These are intended only
for general information purposes. They do not obviate field coordination for
individual items of the indicated work.
G. Information as to general construction and architectural features and finishes
shall be derived from the plans and specifications only.
H. The use of words in the singular shall not be considered as limiting where other
indications denote that more than one item is referred to.
I. Ratings of devices, materials and equipment specified without reference to
specific performance criteria shall be understood to be nominal or nameplate
ratings established by means of industry standard procedures
1.14 ELECTRICAL SYSTEMS IDENTIFICATION
A. All equipment shall be identified by means of laminated, engraved plastic
nameplates, attached to equipment with screws. Lettering shall be ½” high for
equipment nameplates and ¼” high for circuit nameplates.
B. Voltage description of equipment labels. 120 through 240-volt gear shall have
white letters on black labels; communication system equipment shall have black
letters on white labels; devices connected ahead of main switch shall be so
identified with white letters on red label.
C. Nameplate schedule shall be submitted with all shop drawings for approval.
D. Equipment nameplates shall state name and designation of equipment, voltage,
phase, number of wires, and source (where project is supplied from two primary
sources). E.g.
Main Switchboard – IMS
120/208 volt, 3 phase, 4 wire
Line A
E. Switchboards and motor centers shall have each component similarly identified
including meters, switches and/or breakers, and controls. Nameplate for
distribution devices shall identify equipment served by name and designation.
(e.g. `Toilet exhaust fan – EL’).
F. Panelboards in public areas shall have nameplates inside doors. Panelboards shall
have neatly typewritten schedules, indicating number and type of outlets and
location for each circuit, behind clear plastic.
G. Each individual transformer, switch, breaker, contactor, time switch or other
separately mounted device shall be similarly identified with nameplate
identifying equipment and/or equipment controlled and the source of power.
H. At all fusible devices, either individually mounted or part of gear, provide a
printed label (as supplied by fuse manufacturer) inside each switch cover,
indicating specific type of fuse required for replacement.
I. All 120/208V-3Ø-4W conduits shall be color coded. Conduits shall be color
coded by taping or painting conduits every 12’ with a color band 3” wide with
the color black. All junction box covers shall be painted Black.
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J. All data conduits shall be color coded. Conduits shall be color coded by taping or
painting conduits every 12’ with a color band 3” wide with the color blue. All
junction box covers shall be painted Blue.
1.15 IDENTIFICATION OF CONDUCTORS
A. Provide permanent tags to all conductors at terminations, connections and splice
points and intermediate pull boxes to provide identification for future use.
B. All conductors # 4 AWG and larger shall be identified with colored tape. Colors
are as follows:
120/208 Volts
Black - Phase A
Red - Phase B
Blue - Phase C
White – Neutral
Green - Ground
C. Branch circuits # 6AWG or smaller shall be identified by means of color-coded
insulation.
1.16 ARC FLASH HAZARD WARNING AND ENERGY REDUCING SWITCH
A. Arc Flash Hazard Warning - Provide calculations for and labeling on all new
switchboards, switchgear, panelboards, industrial control panels, meter socket
enclosures and motor control centers that are likely to require examination,
adjustment, servicing or maintenance while energized shall be field or factory
marked to warn qualified persons of potential electric arc flash hazards. The
marking shall be in accordance with code.
B. All circuit breakers rated 1200A or larger shall be supplied with and Energy
reducing maintenance switch with local status indicator to comply with code.
1.17 OPERATING PROCEDURE
A. The Electrical Subcontractor shall at all times have a foreman on the project
authorized to make decisions and receive instructions exactly as of the Electrical
Subcontractor himself were present. The foreman or superintendent shall not be
removed or replaced without the express approval of the Architect/Engineer after
construction work begins.
1.18 TEMPORARY LIGHT & POWER
A. See General Conditions for description of temporary light and power.
1.19 EQUIPMENT CLEARANCES
A. Deliver equipment knocked down if necessary.
B. Install equipment with adequate clearances for maintenance and operation.
1.20 ANCHORING EQUIPMENT
A. All floor-mounted equipment shall be securely anchored to the floor with
sufficient anchors to resist a horizontal force equal to the weight of the
equipment.
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B. All floor-mounted equipment 6 feet or more in height shall be anchored to the
wall near the top of the equipment, if mounted against the wall with sufficient
anchors to resist a horizontal force equal to the weight of the equipment.
1.21 EQUIPMENT BOLTED CONNECTIONS
A. Before energizing switchboards, panelboards, disconnect switches etc., the
Contractor shall tighten or retighten all accessible bolts in the electrical
conductive paths using a torque device to the torque recommended by the
manufacturer. If manufacturers torque values are not indicated, use those
specified in UL 486A and UL 486B.
1.22 PRELIMINARY OPERATION
A. Operate electrical systems with required supervision for at least two full days
prior to substantial completion. Make necessary adjustment, and check proper
operation.
B. The Owner reserves the right to operate portions of the electrical system on a
preliminary basis without voiding the guarantee or relieving the Contractor or his
responsibility.
1.23 TESTS PRIOR TO SUBSTANTIAL COMPLETION
A. All wiring and connections shall be tested for continuity, grounds and short
circuits before the fixtures, devices and equipment are connected.
B. Upon completion of the work, the Contractor shall make any tests necessary to
satisfy the Owner and the Architect or his representative that the true intent and
meaning of the drawings and specifications has been carried out. Contractor
shall provide all instruments and labor necessary to make such tests. Such tests
shall include voltage tests at incoming service and at every panel and
switchboard. Any work showing faults under test, and any work not in
accordance with the specifications shall be made good by the Contractor at his
own expense.
C. Tests shall be attended by representative of Electrical Subcontractor, equipped
with instruments required to demonstrate proper functioning of systems, as
specified. Demonstrate the following:
1. Equipment installed and operating in accordance with manufacturer’s
specifications and instructions and with these specifications.
2. Safety controls operating as specified.
3. Motors equipped with proper overload protection and not operating under
overload. Obtain ammeter readings.
4. Submit report in triplicate listing system tested, date, results and description
of fault corrections, if any
1.24 VISITING THE SITE
A. Bidder is advised to visit the site and acquaint himself with the working
conditions. The Contractor shall accept conditions as they exist on Bid date.
Claims for labor and material required for difficulties encountered, which could
have been foreseen had an examination been made, will not be recognized.
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B. The contractor shall notify the Architect immediately of any existing field
conditions not compensated for in the contract drawings and/or specifications.
1.25 DEMOLITION
A. The contractor shall remove all equipment, outlets, wiring and devices made
obsolete by the work of this contract.
B. Where wiring devices are removed and outlets downstream are de-energized the
contractor shall provide all conduit and wiring required to re-energize outlets de-
energized by demolition.
C. The contractor shall dispose of all equipment, lamps, etc… in an approved
manner and in conformance with all applicable codes and standards.
1.26 DESIGN INTENT
A. The project consists of 2 phases, the Rail Trail bridge work is Phase 1 and
Bridges 1, 2 and 3 are Phase 2. All lighting controls gateway, controller, Pharos
and POE switch shall be furnished and installed as part of Phase 1 work.
B. The contractor shall provide all underground Phase 2 conduits from the new
control panel and the main panel as part of Phase 2 work.
C. Provide a new electrical service and a climate-controlled cabinet for the lighting
controls as part of Phase 1.
1.27 OUTAGES
A. All outages shall be coordinated with the owner. A written two week notice shall
be given to the owner indicating what feeders and branch circuits that will be de-
energized and the approximate length of the outage. All outages shall be done on
premium time during the hours of 12PM and 5AM.
B. All new work shall be installed to the extent possible prior to any outages to
minimize the outage duration.
1.28 OPERATING INSTRUCTIONS
A. At the time of final acceptance, the Electrical Subcontractor shall submit four (4)
sets of operating instructions and maintenance manuals for all equipment. Major
systems shall be tabbed separately into individual sections, (ie Lighting, Fire
Alarm, Panelboards, etc.). The manuals shall include a copy of all system and
component guarantees that exceeds one year (ie Ballast guarantee’s, light fixture
emergency batteries, etc.). Manual shall include a typed parts source list for all
equipment that will need to be replaced as a part of regular maintenance (ie
Lamps, ballasts, fuses, etc.). A typed letter from the installing contractor of the
beginning and ending date of the guarantee of the work of this project. The start
date of the guarantee shall be from final acceptance of the project or when the
system(s) major components have been installed, inspected, approved and are
fully operational.
B. The Electrical Subcontractor shall instruct Owner’s representative in the
operation of all electrical systems.
C. The contractor shall provide a schedule and instructions for preventative
maintenance of all items requiring same.
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1.29 RECORD AND AS BUILT DRAWINGS
A. Provide and keep up-to-date a complete as-built set of blue line prints. Correct
daily to show every change from the original drawings and specifications
including the size and kind of equipment, panel schedules, lighting fixture
schedule, and runs of all conduits including dimensional location of all
underground runs, and all addenda and/or change orders. Prints for this purpose
may be obtained from the Architect. Keep this set of drawings on the work and
use only as a record set.
B. Submit Record drawing prints to the Engineer for review prior to submission of
`As Built’ drawings. Prepare "As-built" drawings in Latest AutoCad version. The
"As-built" drawings shall incorporate all corrections and comments made by the
Electrical Engineer on the Record drawings and be submitted to the Electrical
Engineer for final approval. After acceptance of the `As Built’ drawings the
contractor shall submit 3 copies of the approved "As-built" drawings to the
Architect along with the CD Rom. Provide drawings on a CD Rom in accordance
with Section 01000 Basic Requirements.
1.30 GUARANTEE
A. The Electrical Subcontractor shall and hereby does warrant that all work
executed and all equipment furnished under this section shall be free from defects
of workmanship and materials for a period of one (1) year from date of final
acceptance of this work. The Electrical Subcontractor further agrees that he will,
at his own expense, repair and replace all such defective work and all other work
damaged thereby, which becomes defective during the term of the Guarantee
Warranty.
B. In addition to the guarantees called for under this specification and the
requirements of the "General Conditions", and "Basic Requirements", the
Contractor shall guarantee his work as follows:
C. For factory-assembled equipment and devices on which the manufacturers
furnish standard published guarantees as regular trade practice, the Contractor
shall obtain such guarantee and/or warranty, and deliver same to the Owner,
along with operating manuals required under other paragraphs of the
specifications.
D. LED lighting fixture drivers and lighting Arrays shall be guaranteed for a
minimum of five (5) years, after final acceptance of project, for material and
labor.
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PART 2 - PRODUCTS
2.1 WIREWAYS
A. Wireways shall be made to accommodate conductors as required in accordance with
applicable rules of the National Electric Code. To be of code gauge steel and
supported as required by Code.
B. Wireways may not be installed above a panelboard to route multiple branch circuits
through down to the panelboard in larger conduits, regardless is they are 24" in
length or less.
2.2 RACEWAYS AND WIRING SYSTEMS
A. Electrical Metallic Tubing (EMT) may be run where exposed or where concealed in
masonry. EMT shall be electro-galvanized and meet A.N.S.I. standards. Minimum
size shall be ½”. Couplings and connector shall be threadless-type specifically
designed for the purpose. Exposed raceway shall be run parallel to and at right
angles to building features. Raceway shall be continuous from outlet to outlet. Pull
or junction boxes shall be furnished and secured as required by building
construction. Electrical Metallic Tubing (EMT) shall be cold rolled tubing with a
zinc protective coating on the outside and a zinc enamel or equivalent corrosion
resistant coating on the inside. All EMT shall meet UL-797 and shall be labeled
accordingly. Fittings shall be steel and shall be either two screw set screw type or
compression type. Setscrew fittings shall only be used in areas not prone to damage
and areas inaccessible to general public. All Security System and Fire Alarm
System raceways shall use compression type fittings. All connectors shall be
provided with insulated throats. All raceway shall be run parallel to and at right
angles to building features. Approved manufactures are Republic, Triangle, Allied
Tube or approved equal.
B. Liquid tight flexible metal raceway shall be used for final connections to operating
or vibrating equipment, and for connections to equipment requiring adjustment in
position. Provide green wire for bonding. Liquid-tight flexible conduit shall be
interlocked zinc coated steel construction, with a sunlight and mineral oil resistant
PVC jacket and shall comply with UL360. Maximum length shall be 6’. Provide a
separate ground conductor in each length of flexible steel conduit regardless of
length. Provide separate bond wire where integral conductor is not available.
Fittings shall be steel, liquid-tight. Seal and ground conduit and comply with
NEMA FB1. Use Anaconda, Electro-Flex, Flexi-Guard or approved equal.
C. Rigid metal conduit shall be used in areas subject to corrosion, as required by Code,
from pad mounted transformer to new switchboard and as indicated. Rigid steel
conduit and conduit fittings shall be hot dipped galvanized steel with factory
galvanized threads. They shall be steel and shall have a protective zinc coating
applied both inside and outside by means of hot dip galvanizing. The conduit shall
comply with ANSI C80.6 and UL1242 standards. The conduit shall be delivered
with caps to protect threads. No running threads shall be permitted. Fittings shall
be threaded steel and shall have a protective zinc coating applied both inside and
outside by means of hot dip galvanizing. All fittings shall conform to UL8 and shall
be labeled accordingly. Split couplings and threadless couplings shall only be used
in renovation applications and shall be approved by the Engineer. Provide insulated
throat bushings on all ends.
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D. Flexible metallic conduit shall be interlocked zinc coated steel construction and
shall comply with UL1. Maximum length used shall be 6’. Install a separate
ground conductor in each length of flexible steel conduit regardless of length.
Fittings shall be malleable iron and shall comply with NEMA FB1, Conduit shall be
manufactured by Alflex Triangle, Fourslide or approved equal. Fittings shall be
manufactured by Tomic or equal. Fittings which use a screw to bind against the
tubing will not be accepted.
E. Intermediate metallic conduit shall be steel and shall have a protective zinc coating
applied both inside and outside by means of hot dip galvanizing. The conduit shall
comply with ANSI C80.6 and UL1242 standards. The conduit shall be delivered
with caps to protect threads. No running threads shall be permitted. Fittings shall
be threaded steel and shall have a protective zinc coating applied both inside and
outside by means of hot dip galvanizing. All fittings shall conform to UL8 and shall
be labeled accordingly. Split couplings and threadless couplings shall only be used
in renovation applications and shall be approved by the Engineers. Provide
insulated throat bushings on all ends.
F. Rigid nonmetallic conduit shall be either schedule 40 or Schedule 80 PVC and shall
comply with UL651. In underground installations transition rigid nonmetallic
conduit to rigid steel conduit within 5’ of building including stub up. Provide a 3”
wide metallic warning tape stating “Danger – Buried Electric” 12” below grade
directly above all buried PVC ductbanks. Fittings shall be provided by the same
manufacturer that supplies the conduit and shall be installed using manufacturer
approved cement solvent. All elbows shall be long sweep PVC coated rigid steel
conduit.
G. A ground wire shall be provided in all conduit runs. The ground conductor shall be
sized in accordance with code or larger as may be indicated on the contract
documents.
H. All branch circuits shall be provided with a dedicated neutral. No multi wired
branch circuits shall be installed.
I. Type “BX” cables shall not be allowed.
J. Refer to `Installation Of Conduits And Fittings’ in part 3 of these specifications for
installation requirements of all conduits.
2.3 CONDUCTORS
A. All conductors shall be soft-drawn copper, and shall have a conductivity of not less
than 98% of the USASI standard annealed copper, shall be smooth and true and of
cylindrical form and shall be within 1% of the actual size called for. All conductors
shall bear the markings of the Underwriter's Laboratories, the AWG size, the type
insulation, maximum permissible voltage, the manufacturer's name and trade mark.
Minimum insulation voltage rating shall be 600 VAC at 75 degrees
B. For power and lighting systems, no wire smaller than #12 AWG shall be used.
C. All feeder cables shall be type `THW’ or “XHHW-2” and shall be insulated for 600
volts.
D. Branch circuit wiring in raceway shall be type “THHN”, “THWN”, and shall be
insulated for 600 volts color-coded over its entire length.
E. Conductors #12 AWG and smaller shall be solid.
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F. Conductors #10 AWG and larger shall be stranded.
G. Lighting circuit conductors in fixture raceways shall be #12 AWG minimum, higher
than minimum shall be as per plan, Type AVA, AVB, AWM, FE or equal as
approved.
H. Approved solderless fittings shall be used at all joints and terminals.
I. All special system wiring shall be of a type and size as indicated by manufacturer
for equipment.
J. Wire and cable to be by General Electric, Okonite, or approved equal.
2.4 PULL BOXES
A. In general, and where applicable, specifications for pull boxes shall be same as for
junction boxes. Pull boxes shall be installed as indicated on the plans and wherever
else as necessary to facilitate conductor installation.
B. Pull boxes shall be installed in runs of more than 100 feet or runs having more than
the equivalent of 3 right angle bends.
C. Location of pull boxes shall be agreed with the Engineer and shall be “accessible”
as defined in NEC.
D. Boxes shall be supported independently of entering conduits. Pull boxes for new
services shall be as indicated on the plans.
2.5 BOXES AND FITTINGS
A. All boxes and fittings shall be wet location listed.
B. Boxes used for supporting fixtures shall include a 3/8” fixture stud.
C. Where multiple devices are located at one point, the appropriate gang box shall be
used.
D. Boxes used for pendant feeds to lighting fixtures shall be equipped with swivel
hangers.
E. All surface mounted boxes shall be “FS” or `FD’ type with appropriate covers and
plates.
2.6 JUNCTION BOXES
A. Where shown on plans, and where necessary to terminate tap-off or redirect
multiple conduit runs, provide appropriately designed junction boxes. Boxes used
with RGS Conduit and wire shall be cast boxes and shall have full access screw
covers secured with corrosion-resistant screws.
B. Covers shall be surface-mounted as required.
C. Weatherproof junction boxes shall be of the flanged type.
D. Box size shall be in accordance with N.E.C.
E. All surface mounted boxes shall be “FS” or `FD’ type with appropriate covers and
plates.
2.7 SUPPORTING DEVICES
A. Under steel construction, use beam clamps for hangers. Under concrete
construction, use inserts or expansion shields. Under wood construction, use lag
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screws or bolts.
B. Hold small conduit in place along walls or columns, where exposed, by one-hole
malleable pipe clips and all metal expansion shields.
C. Where parallel banks of conduit are installed, support them by means of horizontal
angles below the conduit with vertical hanger rods at both ends.
D. Backboards for electrical and telephone equipment shall be ¾” plywood panels
painted with 2 coats of gray enamel on all sides. Provide 2” x 4” frame backing for
plywood and secure to wall. Plywood shall be AC-INTERIOR-APA grade with
exterior glue.
2.8 DISCONNECT SWITCHES
A. Heavy-duty type, service entrance labeled where applicable.
B. NEMA-1 enclosures for indoor, NEMA-3R enclosures for outdoor applications.
C. Fusible types with rejection clips.
D. Rain tight and lockable where indicated.
E. Furnish and installed by Electrical Subcontractor.
F. Fuses: Size according to motor current.
G. Elevator disconnect switch shall be lockout type with interlock (power on with
cover open) and shall be bonded with a # 6 green ground. Provide a pair of Form
`C’ contacts, contacts to operate simultaneously when switch operates.
H. Approved Manufacturer: Square D, General Electric, ITE Seimens or approved
equal.
2.9 WIRING DEVICES AND PLATES
A. The Electrical Subcontractor shall install devices where shown on the plans. Where
two or more devices occur at one location, they shall be provided with a gang-type
plate.
B. Receptacles shall be NEMA WD-1 rated, meet Federal Spec. W-C-596d as verified
by UL, be 2-pole, 3-wire, 20 amp, 125 volt, NEMA 5-20R, industrial specification
grade or Hospital Grade as indicated below with one piece brass strap with integral
ground contacts locked into back body and face, impact resistant nylon face and
back body, one piece triple wipe brass power contacts.
1. Weather-Resistant /GFCI duplex receptacles for damp or wet location use
shall be Specification grade, Pass and Seymour #2097TRWR-I (ivory).
C. The use of the feed thru provisions of GFCI receptacles will not be allowed. All
receptacles indicated as GFCI shall be individual GFCI receptacles rated 20 amps,
125VAC.
D. Provide a cover plate for all devices. Cover plates shall be as follows:
1. In all finished areas install satin finish stainless steel #302 nonmagnetic
stainless steel wallplates.
2. Other areas where exposed metal boxes are used Raco ½" exposed-work
raised cover plates.
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3. Indoor receptacles labeled `weatherproof” and outdoor receptacles shall have
Tay Mac #MX4280 series or #MX4380 series metal weatherproof `In Use’
cover or approved equal. Color of cover shall be as directed by the Architect.
E. Wiring devices manufactured by Hubbell and Bryant and approved equal are
acceptable.
F. Wall plates in finished areas shall be manufactured by wiring device manufacture.
2.10 SURGE SUPPRESSION UNIT AT SERVICE ENTRANCE
A. General
1. Summary: These specifications describe the electrical and mechanical
requirements for a modular, high-energy, externally mounted surge
protective device (SPD). Devices installed integral to the electrical
panelboard do not meet the intent of this specification and shall be rejected.
2. Standards: The specified system shall be designed, manufactured, tested and
installed in compliance with the following codes and standards:
a. Underwriters Laboratories; UL 1449 4th Edition Revision (effective
3/26/2016)
b. Institute of Electrical and Electronic Engineers (ANSI/IEEE C62.34,
C62.41, C62.45)
c. Institute of Electrical and Electronic Engineers 1100 Emerald Book
d. Federal Information Processing Standards Publication 94 (FIPS PUB 94)
e. National Fire Protection Association (NFPA 20, 70, 75 and 780)
3. Life Cycle Testing: The SPD shall be duty life cycle tested to withstand
10kA (8x20 µs), 20kV (1.2x50µs), IEEE C62.41 Category C surge current
with less than 5% degradation of clamping voltage. Minimum of 15,000 Life
Cycle Surges per Mode for service entrance and 6,000 Life Cycle Surges per
mode for branch panels.
4. Overcurrent Protection: All suppression components shall be thermally
protected and rated to allow maximum specified surge current capacity.
Devices that utilize a single fuse to protect two or more suppression paths are
not accepted. Overcurrent protection that limits specified surge currents is
not acceptable.
5. Basis of Design: The system shall be constructed using multiple surge
current diversion, thermally protected metal oxide varistors (TPMOV). The
surge current circuit shall be designed and constructed in a manner that
ensures surge current sharing. The listing of a manufacturer as acceptable
does not imply automatic approval. Subject to compliance with requirements
provide product by one of the following, no substitutions:
a. ASCO Power Technologies (APT)
b. Current Technologies
c. LEA
6. Device Specifics and Performance Ratings (see plans and chart below):
a. Service Entrance:
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200 kA Surge Rating per Mode with disconnect]
7. Modes of Protection: The SPD shall provide protection for a WYE system in
the Line to Neutral, Line to Ground and Neutral to Ground modes. For a
DELTA system in the Line to Line and Line to Ground modes. Per Phase
rating for a WYE system is the kA rating per mode of the Line to Neutral
mode plus Line to Ground mode and for a DELTA system it is the kA rating
per mode of the Line to Line mode plus Line to Ground mode.
8. UL 1449 4th Edition Voltage Protection Ratings: Shall not exceed the
following:
9. UL 1449 4th Edition Inominal Discharge Current: Shall be a minimum of
20kA.
10. Short Circuit Current Rating: Equal to or greater than 200kAIC.
Electrical Panel Brand/Model Surge Capacity
kA Mode/Phase
Minimum Circuit
Breaker Required
Below Notes
Apply
Main Service Panel(s)
(MSP/MSB/MDP)
ASCO 460 200/400 30 Amp / #10AWG 1,2,4,5,6,7,8
NOTES:
1. Feeder breaker required, see plans for sizing requirements
2. 10 Year Parts Warranty
3. Surge Counter required
4. Thermally Protected Metal Oxide Varsitors (TPMOV) fused at the component level
5. Audible alarm and form C dry contacts
6. Internal service disconnect required
7. Advanced Monitoring – Active Surge Monitor (ASM) with Ethernet connection and event email capability
8. Externally mounted from the electrical panelboard only. Internally mounted units shall be rejected
System
Voltage
UL 1449 4th Edition VPR
L-N N-G L-G L-L
120/240 800 v 800 v 800 v 1200 v
120/208 800 v 800 v 800 v 1200 v
240 1200 v 1800 v
277/480 1000 v 1000 v 1200 v 1800 v
480 1800 v 1800 v
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11. Submittals
a. Documentation: Include rated capacities, operating characteristics,
electrical characteristics, and furnished specialties and accessories. Copy
of UL Category code VZCA certification, as a minimum, listing the
tested values for VPRs, Inominal ratings, MCOVs, type designations,
OCPR requirements, model numbers, system voltages and modes of
protection.
b. Equipment Manual: The manufacturer shall furnish an installation
manual with installation, startup, and operating instructions for the
specified system.
c. Drawings: Electrical and mechanical drawings shall be provided by the
manufacturer that show unit dimensions, weights, component and
connection locations, mounting provisions, connection details and wiring
diagram.
12. Quality Assurance: The manufacturer shall be ISO 9001:2000 certified.
13. Environmental Requirements
Storage Temperature: -55 to +85°C (-67 to +185°F)
Operating Temperature: -25 to +60°C (-15 to +140°F)
Relative Humidity: 0% to 95% (non-condensing)
Audible Noise: less than 45dB at 5 feet (1.5m)
Operating Altitude: 0 to 18,000 feet above sea level
14. Warranty: Ten years from date of Substantial Completion.
B. General SPD Requirements
1. Enclosure: The specified system shall be provided in a heavy duty NEMA 4
or better enclosure.
2. Connections: Same size as SPD leads, complying with Section 260519
"Low-Voltage Electrical Power Conductors and Cables."
3. Component Testing and Monitoring: The proposed product shall be single
pulse surge current tested in all modes at the rated surge currents by an
industry recognized independent test laboratory. The test shall include a
surge impulse (6kV [1.2x50µs], 500 amp [8x20µs] waveform) to benchmark
the unit’s suppression voltage. The applied impulse is followed by a single
pulse surge of the maximum rated surge current magnitude, followed by a
second 6kV [1.2x50µs], 500 amp [8x20µs] impulse as a means of measuring
clamping deviation (component degradation).
C. Execution
1. Installation: Conductors between suppressor and point of attachment to
service equipment shall be sized in accordance with manufacturer’s Shop
Drawings and conductor lengths shall be as short as possible, not to exceed
36 inches. If longer lengths are required then premium low impedance cable
like ASCO AccuGuide shall be used.
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2. Grounding: SPD ground shall be bonded to the equipment grounding
conductor and service entrance ground. Do not bond neutral and ground.
2.11 SURGE SUPPRESSION FOR COMMUNICATIONS
A. The contractor shall provide surge suppression devices on all communications
wiring. All SPD devices shall be 4th edition listed and type 1 unless not otherwise
available.
1. Low voltage protection shall be provided using Ditek surge protections
device to match voltage and wiring.
2.12 MAIN PANELBOARD
A. The panel boards shall be of the dead-front type with hinged door frame in
accordance with both NEMA and UL standards for use as service entrance
equipment.
B. Panelboards shall be for use on 120/208 volts, 3 phase 4 wire system. Panelboards
shall allow for circuit breakers to be replaced without disturbing adjacent breakers.
Breakers shall be rated as shown on Panel Schedule. Panels shall be equipped with
ground bus welded to panel and the neutral shall be insulated from the box. Bussing
shall be copper only. AIC rating shall be as per panel schedule, and shall be fully
rated.
C. Circuit breakers shall be listed for use one the panel voltage. Dual listed circuit
breakers may not be used.
D. Cabinet boxes shall be constructed of code gauge steel. Panel boxes shall be of
sufficient size to provide minimum of 8” gutter space on all sides.
E. Trims to be constructed of code gauge furniture steel with gray finish, ANSI 49, to
be equipped with directory holder. Doors shall have concealed hinges and flush
spring lock with pull-ring handle. Provide cover hinged to box type trim.
F. Provide GFCI circuit breakers, switching duty breakers, ARC fault and shunt trip as
indicated. Each GFCI circuit breaker requires a dedicated neutral in each branch
circuit.
G. Provide spare breakers as shown on Panel Schedule.
H. Panelboards shall be mounted with a maximum mounting height of six feet (6’) to
main breaker or top of panel board, depending on type installed.
I. UL wire bending space requirements shall be met.
J. Directory shall be typed, handwritten will be rejected. Directory shall identify
feeder origin.
K. All circuit breakers shall be bolt-on type only.
L. Approved equals: Square D NQ series, ITE Siemens, General Electric, or approved
equal.
2.13 LIGHT FIXTURES
A. All luminaries and other lighting equipment shall be delivered to the job complete,
wired and including all supporting means such as plaster frames, supports, hangers,
canopies, sockets, holders, all current or voltage modifiers, such as ballasts, starters,
all light control materials; specifically, diffusers, louvers, lenses, reflectors and
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ELECTRICAL - 23
refractors. All lighting fixtures shall be constructed and installed in accordance with
local building codes and directives by the National Board of Fire Underwriters and
shall bear the label of approval of the Underwriters' Laboratories, Inc. All materials
shall be new and of best grade of approved manufacturing standards. Workmanship
shall be of the highest order to assure trouble-free operation and durability of
equipment
B. Specified products shall be considered the Basis of Design. Approved equals to the
basis of the design fixtures listed in the Light fixture Schedule shall be accepted for
review during the submittal phase with the proposed substitute fixture meeting the
following minimum requirements.
1. Be of the same general size, style and shape, including but not limited to lens
construction and shading.
2. Be of equal or better quality and construction.
3. Be supplied with all required accessories to match the specified fixture.
4. Be supplied with all remote drivers, power supplies and cabling lengths to meet
specified performance and control.
5. Provide the same or better distribution, efficiency, source lumen output, and
L70 lumen depreciation metric or greater to equal the specified fixtures.
C. Fixtures shall meet the requirements of utility incentive programs for energy
efficiency. Contact utility company for information. Cooperate and coordinate with
utility for incentive program. Incentives shall go to the owner. Provide information
and fill out forms as requested.
D. Assume all responsibility for checking Architectural Drawings, prior to ordering
fixtures, and provide the specified fixtures with proper mounting arrangement to be
compatible with the type ceiling construction in which the fixture is to be mounted.
Submit letter indicating verification was done.
E. Manufacturer’s submittals for all lighting fixtures shall be submitted for review and
acceptance prior to purchase.
F. Submittals for LED fixtures shall indicate complete details of fixtures, including
Manufacturer’s catalog number, number of lighting boards, number of drivers, CRI
of LED lamps, Lumens per watt, Color temperature, projected life of fixture at
percentage of lumen output, DLC or energy star listing, Light Loss factor (LLF),
IES LM-79, LM-80 and IES TM-21 adherence, LEDs from the same batch, inrush
current, surge protection, RFI, THD, power factor, light shields, switches, metal
gauges, type of wiring, finish color and texture.
G. LED fixture manufacturers shall have a minimum of 5 years’ experience in the
manufacturer of LED systems.
H. Where pertinent to proper installation or operation, submittals shall indicate
relationship between fixtures and adjacent elements of structure (walls, columns,
ducts, openings, ceiling grid, etc.)
I. Submit verification of meeting utility incentive program requirements.
J. Submit letter indicating that the latest Architectural Drawings have been reviewed
for ceiling types and the fixtures being submitted have the proper mounting
accessories.
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K. Submit photometric information.
L. Submit point-by-point calculations for substituted fixtures where requested.
M. Fixtures shall be free of light leaks. No crossbars are permitted over light shields.
Fixtures shall provide for sufficient ventilation of lamps and ballasts. Size and
location of vent holes shall be indicated on Manufacturer’s Drawings. Outdoor
fixtures shall have mesh screens in vent holes.
N. Assume all responsibility for the safe handling of all light fixtures, accessories, and
lamps until the final inspection has been made by the Architect and the installation
accepted by the owner.
O. Special fittings and materials that may be required to support fixtures shall be
supplied as well as supports, spacers, or grounds required to secure surface or
pendant mounted fixtures on suspended ceilings.
P. Fixtures, part or parts thereof (including LED’s) determined to be defective shall be
replaced.
Q. Recessed fixtures shall be supplied with trim gaskets as required to prevent light
leaks on ceiling. Provide mounting support bars for all recessed fixtures, where
required.
R. All LED arrays, shall have the same bin rating for consistency of color.
S. LED drivers shall be specifically listed for use with the fixture. The driver shall be
encased and have overload, short circuit protection, thermal regulation to protect
against overheating and a sound rating of `A’. Drivers shall have a minimum
starting temperature of -20ºC. The drivers shall have a five-year written warranty
from date of shipment against mechanical or electrical defects under normal
conditions of use. The warranty shall include a per-driver replacement labor
allowance.
T. Fixtures to be located outdoors or indoors in ambients that may be below 60-degree
F (-18 degree C), shall have outdoor ballasts and lamps suitable for operation at 0
degree (-16 degree C).
U. Provide manpower and tools for final adjusting of all adjustable fixtures. This
operation shall take place immediately before the building is turned over to the
owner after regular working hours where required.
V. Provide individually fused fixtures for emergency lighting fixtures. Indicate fusing
in submittals. Provide ten percent spare fuses of each type supplied (minimum one).
Mount in cabinet in Electric Room. Obtain signed receipt from owner.
W. All fixtures to be independently supported from building structure.
X. Provide 10% spare lamps for all types specified.
Y. All pendant fixtures shall be mounted from “hang-strait” devices.
Z. Provide end caps on all industrial LED fixtures.
AA. Exact colors shall be selected by Architect from manufacturer’s standard color
charts.
BB. All LED and exterior lighting fixtures shall be fused.
CC. All tamperproof fasteners shall be Tork head (center pin reject) type. Provide three
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(3) screwdrivers for such to Owner.
2.14 CLIMATE CONTROLLED CABINET
A. The contractor shall provide a climate-controlled cabinet which shall house the
lighting control equipment. The cabinet shall consist of a cooling unit, heater and
thermostat and enclosure. The contractor shall mount cabinet on Unistrut channels
in accordance with manufactures requirements.
B. The cabinet shall provide a maximum temperature of 85F degrees in the summer
and a minimum temperature between 45-50F degrees in the winter. The assumed
maximum ambient temperature shall be 110F and the minimum ambient
temperature shall be 0F. The cabinet shall consist of an A/C cooling unit, heater and
thermostat and hinged cover junction box with a mounting backboard.
C. The cabinet to house the lighting control panel shall be a Carbon Steel Nema 4
enclosure, hinged door, IP 66 rated with a hinged door field adjustable for right or
left hinge. The cabinet shall be 42”H x 60”W x 16”D with quarter turn lock cover.
The housing and door thickness shall be 2mm and the mounting plate shall be
2.5mm minimum. The mounting plate shall be 40”H x 58”W. Cabinet shall be UL
listed and factory cut on the side to mate with the cooling unit mounted to the
cabinet. Install all components and mounting equipment required. Provide Rittal
wall mounted enclosure or approved equal.
D. The cooling cabinet shall be a Rittal Top Therm Blue e stainless steel wall-mounted
cooling unit. The cabinet shall be Nema 4X. The cabinet shall include nano-coated
condenser, integral electric condensate evaporation, wired ready for connection
(plug in terminal strip), drilling template and fasteners. The unit operating voltage
shall be of 120V, 60 Hz.. Cabinet shall be provided with a circuit breaker sized as
required. The cooling unit shall be stainless steel and UL listed. Cooling unit shall
be manufactured by Rittal or approved equal. The contractor shall provide all
power to the cooling unit as required.
E. The heater and thermostat shall be installed in the cabinet. The heater shall consist
of a PTC heater with fan, quick connection terminal and fasteners. The heater shall
be rated for use at 120V. The heater shall come with a circuit breaker/fuse.. Heater
shall be UL listed. Heater shall be manufactured by Rittal or approved equal and
thermostat shall be Rittal #3110.00 or approved equal.
F. The contractor shall provide all wiring required for a complete and fully operational
system both within the cabinet between components as well as external circuiting.
The system shall be provided with a minimum of a 1 year warranty on all parts and
components. The contractor shall have the manufacturer provide start
up/commissioning of the climate controlled cabinet.
G. The contractor may contact Jim Hockenberry at Dittman & Greer, Inc. Mobile 413-
207-2851 and email:jim.hockenberry@dittman-greer.com for climate controlled
cabinet.
2.15 DATA SYSTEMS
A. Furnish and install Data raceways, male connectors, Category 6 cables and make all
connections/testing each end of cable.
B. The Electrical contractor shall provide a 3/4” conduit (EMT) with pull line from
each outlet box to an accessible location. Provide metal bushings on the ends of all
conduits. (Accessible location shall be defined as the hung ceiling space). All
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raceways shall be routed concealed in all “finished spaces”.
C. Minimum size outlet box shall be 4-11/16” square by 2-1/8” deep junction box and
1-1/2” extension ring on box with single gang ring.
D. The Electrical contractor is responsible for identifying any sources of EMI/RFI and
providing adequate protection for the cable plant. Maintain a minimum of .9m (3
feet) of clearance between any EMI/RFI source, including electrical wire runs.
E. Sources of EMI include, but are not limited to:
1. Motors/Generators
2. Lighting
3. Air Conditioner units
4. Batteries
5. Power Tools
6. Kitchen Appliances
7. Power Panels, boxes
8. Copiers
9. Power panels
F. Sources of RFI include, but are not limited to:
1. Radio Transmitters
2. Televisions
3. Wireless phones
4. Satellite Transmitters
5. Alarm Systems
6. Surveillance equipment
7. Microwave units
G. The complete installation shall comply with the latest edition of EIA/TIA-568,
Commercial Building Telecommunications Wiring Standard and the latest edition
of EIA/TIA 569, Commercial Building Standard for Telecommunications Pathways
and Spaces.
H. The entire installation shall be coordinated with the lighting fixture manufacture.
I. The cable shall be blue Cat 6, 4 pair, UTP, 24-gauge low smoke cable. Cable shall
be manufactured by Commscope or approved equal.
J. The contractor shall make all connections to the network switch, gateway, Pharos
and all data enabler Pro’s. Refer to wiring diagram on the contract documents.
2.16 RELAYS
A. Furnish and install relays as shown and detailed on the plans. Relays to be in a steel
housing with a hinged cover as detailed on the plans. Relay contacts to be 20 amp.,
120 or 277 volt as required. Coil voltage shall be as indicated on the plans or as field
required. Relays shall be mechanically held.
B. Elevator relays shall be as required by elevator manufacturer. There are 4 relays
shown on the plans. They are for main level elevator recall, alternate level elevator
recall, elevator shaft venting and flashing hat. Coordinate the requirements with the
State Elevator Code and the Elevator installer in the field.
C. Approved Manufacturers: Asco, Square D, G.E., Siemens or Allen Bradley.
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ELECTRICAL - 27
2.17 VIBRATION ISOLATION AND SEISMIC RESTRAINTS
A. Vibration Isolation
1. All electrical equipment, conduits and gears as noted on the Drawings or in
the Specification shall be mounted on vibration isolators to prevent the
transmission of vibration and mechanically transmitted sound to the building
structure. Vibration isolators shall be selected in accordance with the weight
distribution to produce reasonably uniform deflections.
2. All isolators and isolation materials shall be of the same manufacturer and
shall be certified by the manufacturer.
B. Seismic Restraints
1. It is the intent of the seismic portion of this specification to keep all electrical
building system components in place during a seismic event.
2. All such systems must be installed in strict accordance with seismic codes,
component manufacturer's and building construction standards. Whenever a
conflict occurs between the manufacturer's and construction standards, the
most stringent shall apply.
3. This specification is considered to be minimum requirements for seismic
consideration and is not intended as a substitute for legislated, more
stringent, national, state or local construction requirements.
C. The contractor shall correct any variance or non-compliance with these specification
requirements in an approved manner.
1. The work in this section includes, but is not limited to the following:
a. Vibration isolation for piping, ductwork and equipment
b. Flexible piping connections
c. Equipment isolation bases
d. Seismic restraints for isolated equipment.
e. Seismic restraints for non-isolated equipment
f. Certification of seismic restraint designs and installation supervision
g. Certification of seismic attachment of housekeeping pads
h. Equipment buried underground is excluded but entry of services through
the foundation wall is included.
D. Definitions
1. Positive Attachment:
a. A positive attachment is defined as a cast-in anchor, a drill-in wedge
anchor, a double-sided beam clamp loaded perpendicular to a beam, or a
welded or bolted connection to structure.
b. Single sided "C" type beam clamps for support rods of overhead piping,
ductwork or equipment are not acceptable on this project.
2. Transverse Bracing:
a. Restraint(s) applied to limit motion perpendicular to the centerline of the
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ELECTRICAL - 28
pipe, or conduit.
3. Longitudinal Bracing:
a. Restraint(s) applied to limit motion parallel to the centerline of the pipe,
or conduit.
E. Submittal Data Requirements
1. The manufacturer of vibration isolation and seismic restraints shall provide
submittals for products as follows:
a. Descriptive Data:
1. Catalog cuts or data sheets on vibration isolators and specific
restraints detailing compliance with the specification.
2. Detailed schedules of flexible and rigidly mounted equipment,
showing vibration isolators and seismic restraints by referencing
numbered descriptive drawings.
b. Shop Drawings:
1. Submit fabrication details for equipment bases including dimensions,
structural member sizes and support point locations.
2. Provide all details of suspension and support for ceiling hung
equipment.
3. Where walls, floors, slabs or supplementary steel work are used for
seismic restraint locations, details of acceptable attachment methods
for ducts, conduit and pipe must be included and approved before the
condition is accepted for installation. Restraint manufacturers'
submittals must include spacing, static loads and seismic loads at all
attachment and support points.
4. Provide specific details of seismic restraints and anchors; include
number, size and locations for each piece of equipment.
c. Seismic Certification and Analysis:
1. Seismic restraint calculations must be provided for all connections of
equipment to the structure.
2. Calculations (including the combining of tensile and shear loadings)
to support seismic restraint designs must be stamped by a registered
professional engineer with at least five years of seismic design
experience and licensed in the state of the job location. Testing and
calculations must include both shear and tensile loads as well as one
test or analysis at 45° to the weakest mode.
3. Analysis must indicate calculated dead loads, static seismic loads
and capacity of materials utilized for connections to equipment and
structure. Analysis must detail anchoring methods, bolt diameter,
embedment and/or welded length. All seismic restraint devices shall
be designed to accept, without failure, the forces detailed in this
Section acting through the equipment center of gravity. Overturning
moments may exceed forces at ground level.
F. Code and Standards Requirements
1. Applicable codes and Standards
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2. The Massachusetts State Building Code
G. Manufacturer's Responsibility
1. Manufacturer of vibration isolation and seismic control equipment shall have
the following responsibilities:
a. Determine vibration isolation and seismic restraint sizes and locations
b. Provide vibration isolation and seismic restraints as scheduled or
specified
c. Provide calculations and materials if required for restraint of non-isolated
equipment
d. Provide installation instructions, drawings and trained field supervision
to insure proper installation and performance.
H. Related Work
1. Housekeeping Pads
a. Housekeeping pad reinforcement and monolithic pad attachment to the
structure details and design shall be prepared by the restraint vendor if
not already indicated on the drawings.
b. Housekeeping pads shall be coordinated with restraint vendor and sized
to provide a minimum edge distance of ten (10) bolt diameters all around
the outermost anchor bolt to allow development of full drill-in wedge
anchor ratings. If cast-in anchors are to be used, the housekeeping pads
shall be sized to accommodate the ACI requirements for bolt coverage
and embedment.
2. Supplementary Support Steel
a. Contractor shall supply supplementary support steel for all equipment,
piping, ductwork, etc. including roof-mounted equipment, as required or
specified.
3. Attachments
a. Contractor shall supply restraint attachment plates cast into housekeeping
pads, concrete inserts, double-sided beam clamps, etc. in accordance
with the requirements of the vibration vendor's calculations.
2.18 Seismic Force Levels - The following force levels will be used on this project.
Building
Code
"G" Forces for
All Pipe, Duct &
Conduit
"G" Forces for
Rigidly
Mounted
Equipment
"G" Forces for Flexibly
Mounted Equipment
"G" Forces for Life
Safety Equipment
either Rigidly or
Flexibly Mounted
2.19 PAINTS AND COATINGS
A. All paints and coating used on the interior of the building (defined as inside of the
weatherproofing system and applied on site) shall comply with the Leed
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Requirements.
B. Paints shall not exceed VOC content limits established in Green Seal Standard GS-
11, Paints, First Edition, May 20, 1993. Primers must meet the VOC limit for non-
flat paint.
1. Flats: 50g/L
2. Non-Flats: 150g/L
C. Anti Rust and Anti corrosive paints: 250g/L Per Green Seal Standard GS-03, Anti
Corrosive Paints, Second Edition, Jan. 7, 1997
D. Paints shall be Benjamin Moore, Eco Spec series, ICI Paints Lifemaster series with
Devflex 4020PF or Prep and Prime Gripper 3210 or equal
2.20 COMPOSITE WOOD AND AGRIFIBER
A. All composite wood and agrifiber used on the interior of the building (defined as
inside of the weatherproofing system and applied on site) shall contain no added
urea formaldehyde resins. Laminating adhesives used to fabricate on site and shop
applied composite wood and agrifiber assemblies shall contain no added urea
formaldehyde.
B. Composite wood and agrifiber products are defined as: particleboard, medium
density fiberboard (MDF), plywood, wheatboard, strawboard, panel substrates and
door cores.
C. Plywood shall be manufactured by Certified Wood Products Inc. of Minnesota or
equal
2.21 ADHESIVES AND SEALANTS,
A. All adhesives and sealants used on the interior of the building (defined as inside of
the weatherproofing system and applied on site) shall comply with the current Leed
Requirements.
1. PVC welding 510g/L less water
2. CPVC welding 490g/L less water
3. ABS welding 325g/L less water
4. Plastic cement welding 250g/L less water
5. Adhesive primer for plastic 550g/L less water
6. Special Purpose contact Adhesive 250g/L less water
7. Contact Adhesive 80g/L less water
B. If the contractor intends to use any other type of adhesive or sealant that is not listed
it will be incumbent upon him to provide products that comply with the South Coast
Air Quality Management District 9SCAQMD) Rule #1168. VOC limits are listed in
New Construction and Major Renovations version 4.1 Reference Guide page 339,
table 1.
C. Aerosol Adhesives shall comply with Green Seal Standard for Commercial
Adhesives GS-36 dated October 19, 2000.
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PART 3 - EXECUTION
3.1 MECHANICAL EQUIPMENT
A. Electrical Subcontractor shall furnish and install all disconnect switches, thermal
protection and starters for all heating and cooling and plumbing equipment
except where such are an integral part of the equipment.
B. Provide required electrical connections for the building mechanical equipment.
Wiring shall be as necessary to provide proper operation of the equipment
including power and temperature control and as indicated on the plans.
C. The Electrical Subcontractor shall, before energizing any motor or other piece of
mechanical equipment, verify that it is proper voltage, properly lubricated,
aligned and/or ready for proper and safe operation. Motor rotation shall be
checked and corrected, if necessary.
D. Make connections to other building equipment as required. Data on the drawings
of equipment actually purchased before starting this work of its rough-in. Each
piece of equipment and each motor shall be provided with an approved
disconnect and over-current protection as required by Code.
3.2 WORKMANSHIP
A. This Contractor shall endeavor to layout and perform his work in such a manner
as to cause no delay in the construction work by other trades.
B. This Contractor shall verify all measurements and shall be responsible for the
correctness of same. No allowance will be made for differences between actual
measurements and those shown on the plans.
C. If, in laying out his work, this Contractor finds that the work of other trades
might interfere with him, the Architect/Engineer shall be notified at once. The
right is hereby reserved by the Architect/Engineer to make reasonable changes in
arrangement of equipment, piping, etc., prior to roughing-in, if interference is
found, without additional cost to the Owner.
D. All work shall be installed in such a manner as to be readily accessible for
maintenance, repair and operation. Deviations from the plans must be approved
by the Architect/Engineer without additional cost to the Owner.
E. The locations of outlets, apparatus and equipment are approximate only and the
runs of feeders, mains and branches are not necessarily to be made exactly as
shown on the plans. The exact locations of such work shall be determined after
full consideration has been given to work of other trades and without changes in
the design of the systems. The entire installation shall conform to the latest issue
of the National Electric Code and local inspection authorities.
F. Verify exact circuit breaker, feeder and outlet requirements and locations for
mechanical equipment in accordance with manufacturer’s wiring diagrams.
Incorporate any changes necessary in design to accommodate such.
G. In areas where finish may be of a different color, the Architect will advise on
finish.
H. Electrical equipment, such as junction and pull boxes, controls and apparatus,
shall be made accessible.
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I. There shall be no splices in new wire except where circuits are branched.
J. Make splices for #10 or smaller conductors with U.L. approved solderless
connectors based on MMM Co.”Scotchlock” Type S, M, or L, Buchanan, or
T&B “Stakon”. Make splices, cable taps and terminals for #8 or larger
conductors with U.L. approved bolted pressure conductors of bronze or copper
construction equal to those manufactured by T&B or Burndy.
3.3 GROUNDING
A. The Electrical Subcontractor shall furnish and install all material required for the
grounding and/or bonding in the building of all equipment, metal piping systems,
power and lighting systems.
B. The Electrical Subcontractor shall make tight and proper all metallic components
and equipment to one another and to ground, using a positive foolproof system of
connections. Provide and install bonding and grounding conductors with
approved termination where required, conforming with latest National Electric
Code, M.E.C.O. and other applicable specification standards.
C. A #12 AWG insulated equipment ground conductor shall be installed in each
length of flexible metallic conduit connecting to motors, recessed lighting
fixtures and other equipment components for continuity. Positive ground
connections with ground wire shall be made at each outlet box, lighting fixture,
motor and other equipment components by means of positively secured ground
clamp in each.
D. A ground wire shall be provided in all conduit runs. The ground conductor shall
be sized in accordance with code or larger as may be indicated on the contract
documents
E. Size ground connections according to Code. Ground connections shall be
copper, connected with code-approved brass or copper clamp fittings. Do not use
soldered connections in grounding connection.
F. Make ground connection and taps from equipment with as few connections as
possible. Make connections with approved type solderless connectors, protect
from mechanical injury and support rigidity.
G. Clean contact surfaces thoroughly before connection is made, so as to insure a
good metal-to-metal contact. Ground connections shall be readily accessible for
inspection at all times.
H. Ground all systems and equipment in accordance with best industry practice and
the following:
I. Establish a ground bonding connection from structural building steel to each
cold-water mains entering the building. Each bonding connection shall consist of
green insulated conductors run in threaded steel conduit, and sized as indicated
hereinafter for grounding electrode conductors.
J. The grounding stud of each secondary voltage to secondary voltage dry type 3
phase transformer for light and power shall be connected separately to the
grounding electrode for such transformers specified below. Connection shall be
by means of a green insulated conductor, run in threaded steel conduit, sized in
accordance with the following:
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Transformer KVA Grounding Conductor Conduit Size
0 - 45 1 # 6 ¾"C
46 – 75 1 # 2 ¾"C
76 - 150 1 # 3/0 1”C
151 and larger 1 # 250MCM 1 1/4"C
K. The grounding electrode for each secondary voltage to secondary voltage dry
type transformer shall consist of a cadweld connection to adjacent structural steel
at a point where only fireproofing and not structural concrete is applied to it.
L. Provide grounding bonds between all metallic conduits of the light and power
system which enter and leave cable chambers or other non-metallic cable pulling
and splicing boxes. Accomplish this by equipping the conduit with bushings of
the grounding type individually cross connected.
M. Bond metallic conduits containing grounding electrode conductors and main
bonding conductors to the ground bus service enclosure and/or grounding
electrode at both ends of each run utilizing grounding bushings and jumpers.
N. Provide grounding bonds for all metallic conduits of the light and power system,
which terminate in pits below equipment for which a ground bus is specified.
Accomplish this by equipping the conduits with bushings of the grounding type
connected individually to the ground bus.
O. Provide supplementary ground bonding where metallic conduits terminate at
metal clad equipment (or at the metal pull box of equipment) for which a ground
bus is specified. Accomplish this by equipping the conduits with bushings of the
grounding type connected individually by means of jumpers to the ground bus.
P. Each grounding type bushing shall have the maximum ground wire
accommodation available in standard manufacture for the particular conduit size.
Connection to bushing shall be with wire of this maximum size.
Q. Provide a #6 AWG in ¾" minimum conduit green insulated copper ground wire
connection to cold water pipe or other main building service grounding electrode
for the main telephone equipment room/backboard and main data equipment
room/backboard..
R. The central equipment for the fire protection alarm system shall have its
grounding terminal connected to the nearest metallic cold water main by means
of a #6 green coded insulated conductor, run in ¾" threaded metallic conduit.
Utilize a ground clamp of a type specifically manufactured for the purpose.
S. Conductors utilized for grounding and bonding shall have Type "TW" or better
insulation, color coded green.
T. Bonding conductors on the load side of the service device and equipment
grounding conductors shall be sized in relation to the fuse or trip size of the
overcurrent device supplying the circuit in accordance with the following table:
U. SIZING OF EQUIPMENT AND RACEWAY GROUNDING CONDUCTORS
AND LOAD SIDE OF SERVICE BONDING JUMPERS
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OVERCURRENT DEVI CE GROUNDING CONDUCTOR OR BONDING
CONDUCTOR
FUSE OR TRIP SIZE SIZE -- CU SIZE AL
(AMPS)**
15 - 20 #12 #10
25 - 60 #10 #8
70 - 100 # 8 # 6
110 - 200 # 4 # 4
225 - 400 # 2 1/0
500, 600 * 2 x #1 2 x 2/0
700, 800 * 2 x 1/0 2 x 3/0
1000 * 3 x 2/0 3 x 4/0
1200 * 4 x 3/0 4 x 250 MCM
1600 * 5 x 4/0 5 x 350 MCM
2000 * 6 x 250 MCM ( x 400 MCM
*Adjust quantity (if needed) to match number of conduits in run.
**Where phase leg conductor ampacity exceeds over-current device, increase grounding
conductor as if the overcurrent device size matched the phase leg ampacity.
V. Grounding electrode conductor and conductors used for bonding on the supply
side of the service device shall be sized in accordance with the following table:
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SIZING OF GROUNDING ELECTRODE CONDUCTORS AND MAIN (AND SUPPLY
SIDE OF SERVICE) BONDING JUMPERS
SERVICE CONDUCTOR SIZE
GROUNDING
ELEC-TRODE
CONDUCTOR
BONDING JUMPER
CONDUCTOR
CABLE BUS CU AL CU AL
CU AL
#2 1/0 100 # 8 #6 # 8 #6
3/0 250MCM Max 200 # 4 #2 # 4 #2
500 MCM. 700MCM Max 400 # 1/0 3/0 # 1/0 3/0
2x350
MCM.
2X500
MCM
Max 600 # 2/0 4/0 # 2/0 4/0
2x500 MCM 2X700
MCM
Max 800 # 2/0 4/0 #2/0 4/0
4x350 MCM 4X500
MCM
Max 1200 3/0 250
MCM
250
MCM
350
MCM
5x400 MCM 5X600
MCM
Max 1600 3/0 250
MCM
400
MCM
600MC
M
6x500 MCM 6X750
MCM
Max 2000 3/0 250
MCM
500
MCM
2X250
MCM
8x500 MCM 8X750
MCM
Max 3000 3/0 250
MCM
2x500
MCM
2X250
MCM
11x500
MCM
11X750
MCM
Max 4000 3/0 250
MCM
2x500
MCM
2X750
MCM
14x500
MCM
14X750
MCM
max5000 3/0 250
MCM
3x400
MCM
3X600
MCM
W. Connections of ground wires shall be in accordance with the following:
LOCATION GROUND WIRE CONNECTION
Main Switchboard Switchboard ground bus
Junction box at which non-metallic
conduits terminate
Metal body of junction box
Secondary voltage to secondary voltage
Transformer
Transformer ground stud
3.4 INSTALLATION OF CONDUITS AND FITTINGS
A. All conduits shall be installed so as to provide the straightest possible run with
not more than the equivalent of three 90-degree bends in a single run. Where
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ELECTRICAL - 36
more bends are necessary, the Electrical Subcontractor shall provide suitable pull
boxes.
B. All feeders and homeruns shall be installed in conduit or duct. Raceways
underground shall be rigid steel galvanized, non-metallic duct encased in
concrete or plastic conduit encased in concrete. Conduits in concrete slabs on
grade or where exposed to weather shall be rigid steel galvanized. Conduits in
concrete slabs or walls above grade shall be galvanized intermediate metal
conduit (IMC) where allowed by code or rigid steel galvanized. Conduits in
masonry walls, in steel stud walls or in furred spaces 10’ in length or greater,
shall be EMT for 2 inch and smaller size and shall be EMT, rigid steel galvanized
or galvanized intermediate metal conduit (IMC) where allowed by code, for
larger than 2 inch size. Conduits in metal or wood stud walls, in furred spaces
less than 10’ in length or for final connections to recessed fixtures or to motors or
moving or vibrating equipment shall be flexible conduit in dry locations and
liquid-tight flexible conduit in damp locations or where exposed to weather.
C. All homeruns, if not shown on the drawings, shall originate from the first outlet,
wiring device or light fixture of the circuit back to the panel.
D. Run all conduits unless specifically noted on the drawings by note or symbol,
concealed. Install all conduit runs parallel to, or at right angles to structural
members, walls or lines of the building. DO NOT COMBINE CONDUIT RUNS
WITHOUT APPROVAL.
E. Conduits which are suspended on rods more than 2 feet long shall be rigidly
braced to prevent horizontal motion or swaying.
F. Conduits shall be supported at intervals called out in `spacing of conduit
supports’ table of NECA Standard of Installation, or as required by code,
whichever is more restrictive.
G. Conduits which are installed at this time and left empty for future use including
intercommunications system conduits shall have a 3/16 inch polyrope pull line
left in place for future use.
H. Where conduit passes from one type of construction to another, or where there is
a possibility of dissimilar movements, a minimum of 36 inches of flexible
conduit shall be installed in furred spaces or where exposed. Use O.Z. type `DX’
expansion fittings in concrete. Conduits entering refrigerated areas shall have an
approved sealing fitting filled with compound, installed in an accessible location,
on warmer side of wall.
I. Electric metallic tubing with approved fittings will be accepted in lieu of heavy
wall conduit where so approved by the National Electrical Code if note otherwise
on the drawings.
J. Conduit shall be fished and cleaned and dry before pulling wires and shall be
suitably protected against entrance of dirt and moisture during construction.
K. Ends of all conduits shall be reamed and all joints made waterproof. Connections
to junction boxes shall be double locknut and bushing, using insulated bushings
on all conduit 1-1/4” or larger. Grounding busing shall be provided at all panel
connections.
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L. Conduit connections to motor frames shall have a minimum of 18” of greenfield
to eliminate vibrations and noise being transferred to other parts of the building,
with cable jumper across greenfield and fittings.
M. Run conduit to avoid low pockets which might collect water. During installation,
cap open ends.
N. Maintain conduits in position during the pouring of concrete.
O. Electric metallic tubing will not be installed below grade in areas subject to
severe corrosion conditions or embedded in concrete. Approved conduit no
larger than 1-1/4” & 2” may be installed on the centerline of concrete slabs on
grade, respectively. Conduit larger than the above may be embedded in the slab,
provided the slab on grade is thickened accordingly. Where conduit is run below
slab on grade, conduit will be corrosion protected.
P. Support exposed conduit in a firm and substantial manner by means of adjustable
malleable hangers of approved design.
Q. All elbows 1 inch and larger shall be factory made. Conduits shall be kept at least
16 inches from the coverings on hot water and steam pipes, and 18 inches from
the covering on flues and breechings. The open ends of all conduits shall be kept
closed with approved conduit seals during the construction of the building. Use
approved conduit unions or O.Z. type `SSP’ split couplings (except in hazardous
locations) where union joints are necessary. Running threads will not be
permitted.
R. Conduits above de-mountable ceilings shall be installed as high as possible
against the structure above.
S. Route all exposed raceways as directed by the Engineer.
T. When installing flexible metallic cable concealed, tape cable together in bundles
and tie to structure or supports at 5' intervals.
U. Type “MC” cables shall be allowed for lighting fixture whips and branch circuits
fished into existing walls only. All homeruns to panel board(s) shall be conduit
and wire only. See paragraph C above.
V. In finished areas where raceways cannot be routed concealed because of building
construction, the Architect will advise on how to route these raceways in a low
profile wiremold type surface metal raceway system.
W. In finished areas where feeder conduits cannot be routed concealed because of
building construction or approved by the Architect or the engineer, the electrical
contractor shall paint the conduits and supports to match the surrounding
surfaces. The contractor shall clean all conduits and supports to insure the paint
adheres to the conduit and supports.
X. Permanent electrical power shall be scheduled for availability for use to make
tests of mechanical equipment prior to the installation completion date.
Y. All penetrations through fire rated walls shall be sealed with 3-hour fire-rated
caulk or putty “3M” or equal.
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3.5 OUTLET AND JUNCTION BOXES
A. Verify mounting heights of switches and receptacles with Architect before
installation. The Electrical Subcontractor shall check with Architectural and
Structural Plans for interference.
B. Junction and outlet boxes, where exposed to weather and wet locations, shall be
of the threaded hub type and provided with watertight screw-on cover and gasket.
C. Pull boxes shall be adequate size to accommodate the conductors installed
therein without excessive bending of the conductors, which would damage the
conductor insulation.
D. All outlets installed in masonry shall be so set that their outer edges are ¼” in
back of finished surface.
E. Outlet boxes shall not be supported by the conduit. Suitable means shall be
provided to support the outlet box to take the weight of the fixture.
F. Fixture outlet boxes used as junction boxes or outlets not used, shall be provided
with cover.
G. All outlet boxes surface mounted on walls or columns shall be equal to Crouse
Hinds FS2 Series ½” or ¾” conduit entry. Covers and device plates shall be
designed for FS boxes.
3.6 REQUIREMENTS GOVERNING ELECTRIC WORK IN DAMP OR WET LOCATIONS
WITHIN BUILDING CONFINES
A. Abide by the requirements specified for normal electric work conditions except:
1. Exclude armored cable.
2. Utilize watertight compression gland type fittings only on elect. metallic tubing.
3. The finish for threaded steel conduit shall be galvanized only.
4. Outlet size boxes and fittings shall be of galvanized cast ferrous metal only.
5. Conductors for pulling into raceways for lighting and appliance branch circuitry
purposes shall have permissible insulation types limited to “XHHW”, “TW”,
“THW” and “THWN”.
6. Conductors for pulling into raceways for main feeders, submain feeders and
branch feeders shall have permissible insulation types limited to “XHHW”,
“THW”, and “THWN”.
7. Apply one layer of half lapped plastic electric insulating tape over wire nuts
used for joining the conductors of wires.
8. Exclude split insulating casings for insulating joints and taps in conductors of
wires and cables.
9. Wiring device plates shall be galvanized sheet steel or cast ferrous metal except
that in finished spaces, they shall be of type 302 non-magnetic stainless steel.
10. Plates for toggle switches and receptacles shall have gasketed snap-shut covers.
11. Final connections of flexible conduit shall be of the neoprene sheathed type.
12. Enclosures, junction boxes, pull boxes, cabinets, cabinet trims, wiring troughs
and the like, shall be fabricated of galvanized sheet metal, shall conform to the
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following.
a. They shall be constructed with continuously welded joints and seams.
b. Their edges and weld spots shall be factory treated with cold galvanized
compound.
c. Their connection to circuitry shall be by means of watertight hub
connectors with sealing rings.
d. Enclosures for individually mounted switching and over current devices
shall be NEMA-4.
13. The covers, doors, plates and trims used in conjunction with all enclosures, pull
boxes, outlet boxes, junction boxes, cabinets and the like, shall be equipped
with gaskets.
14. All enclosures, cabinets, junction and pull boxes (larger than outlet box size)
and the like, shall be equipped with breather and drain fittings.
15. The following shall be treated as damp or wet locations within building
confines, regardless of whether or not a high ambient moisture level is found to
exist:
a. Spaces where any designations indicated weather-proof (WP) or vaporproof
(VP) appear on the drawings.
b. Outside of waterproofing in foundation walls in contact with grade.
c. Electric work in slabs, walls or suspended ceilings which bound on a space
defined as a damp or wet location shall meet the damp or wet location
requirements if it enters into, or opens into the damp or wet location in any
way.
3.7 TESTS
A. All wiring and connections shall be tested for continuity, grounds and short
circuits before the fixtures, devices and equipment are connected.
B. Upon completion of the work, the Contractor shall make any tests necessary to
satisfy the Owner and the Architect or his representative that the true intent and
meaning of the drawings and specifications has been carried out. Contractor
shall provide all instruments and labor necessary to make such tests. Such tests
shall include voltage tests at incoming service and at every panel and
switchboard. Any work showing faults under test, and any work not in
accordance with the specifications, shall be made good by the Contractor at his
own expense.
C. All tests shall be typed to include page number and number of pages in report.
Handwritten reports will be rejected.
3.8 LIGHTING FIXTURES
A. Installation of all lighting fixtures shall be done by experienced mechanics.
Lighting fixtures shall not be installed where finished coat of paint has been
applied to ceiling and walls until paint is thoroughly dry.
B. Lighting fixtures in equipment rooms shall not be installed until after all piping
and ductwork is in place. Lighting fixture layout shown on the drawings is
typical layout but may be modified to provide adequate lighting of the equipment
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ELECTRICAL - 40
space according to final construction conditions. Any relocation of fixtures due
to duct or piping interference shall be as directed by the Architect/Engineer, at no
expense to the Owner.
C. Fixtures shall be rigidly mounted to fixture stud in outlet boxes. Malleable iron
hickies or extension pieces shall be provided where required.
D. Provide and install suitable cover plate or canopy for each fixture outlet box
where the fixture does not provide a suitable cover.
E. Pendant type fixtures in the same room shall be installed at a uniform height from
the floor and hang plumb.
F. Each fixture shall be completely prewired in Code approved manner with #12
AWG copper conductors with an insulation rating approved by Code.
G. Circuit wiring running through the fixtures shall be No. 12 AWG with type
THMN insulation. There shall be no joints in the wires other than those
absolutely required. The fixture wires shall be of sufficient length for making
approved connections at the fixture outlets and at the lamp-holders or ballasts.
H. Joints and splices within fixtures to be either secured by wire nuts or indent type
lug fasteners.
3.9 JUNCTION BOXES FEEDING LIGHT FIXTURES
A. For light fixtures installed in or on dropped accessible ceilings the contractor
shall provide a junction box on the structure above light fixtures and provide a
fixture whip from the junction box down to the light fixture. A maximum of 4
fixtures will be allowed to be fed from a single junction box. The contractor shall
size junction box in accordance with code. Looping wiring from fixture to fixture
will not be allowed.
3.10 JUNCTION BOXES FOR HOMERUNS
A. The contractor shall provide a junction on the ceiling above the light fixture or
wiring device which has a homerun indicated. The homerun conduit shall be
terminated in this box and MC Cable may be run from this junction box down to
the light fixture or wiring device. The minimum size junction box shall be 6”
square x 4”D, larger as required by code.
3.11 FIRESAFING AND SMOKE SEAL
A. Firesafing and smoke seal is required where pipes, ducts and conduit leave or
enter any vertical pipe/duct shaft way at all floors and through all walls above or
below any Class “A” acoustical tile ceiling or any space without any type of
finished ceiling.
B. Firesafing and smoke seal is required for all pipes, ducts or conduit penetrations
through rated walls or partitions and at positions separating smoke zones from
each other—if smoke zones or plenums are employed in the building. Each of
the principle trades—plumbing, sprinklers, HVAC and electrical—are to provide
their own pipe and duct sleeves and to do their own Firesafing and smoke seal
work.
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ELECTRICAL - 41
C. Firesafing and smoke seal of pipe and duct penetrations through non-rated
secondary walls within a rated larger area need not require Firesafing and smoke
seal until they penetrate the rated walls.
D. All Firesafing and smoke seal sealants used on the interior of the building
(defined as inside of the weatherproofing system and applied on site) shall
comply with the requirements of the following reference standards to comply
with the LEED Certified Building Credit 4.1 Low Emitting Materials: Adhesives
and Sealants. Adhesives, sealants and sealant primers: South Coast Air Quality
Management District (SCAQMD) Rule #1168.
E. Firesafing and smoke seal materials are as follows:
1. Fire Stop sealant shall be FS One High Performance Intumescent Fire Stop
sealant by Hilti
2. Self-leveling fire stop shall be CP 604 sealant by Hilti.
3. All Firesafing materials must be Low Emitting and be at or below LEED
maximum VOC levels.
4. All Firesafing material must be non-combustible as defined by NFPA standard
220 when tested in accordance with ASTM E136; melt point - 200ºF; when in
contact with metal, be non-corrosive meeting FS-HH-1-558 B; “k” value of
0.25 or less per ASTM C 518; the material shall be moisture-resistant, mildew,
vermin-proof and non-deteriorating. The Firesafing insulation shall be fire
containment tests per ASTM E119.
3.12 SPLICES
A. Make splices for #10 or smaller conductors with UL approved solderless
connectors based on 3M Co. “Scotch-lock” Type Y, R, G or B, Buchanan, or
T&B “Stakon”. Make splices, cable taps, and terminals for #8 or larger
conductors with UL approved bolted pressure conductors of bronze or copper
construction equal to those manufactured by T&B or Burndy.
END OF SECTION