Shelter Specifications.pdf

16000 - PAGE 1

DIVISION 16000

ELECTRICAL

TABLE OF CONTENTS

GENERAL

1.1 GENERAL

1.1.1 Workmanship

1.1.2 Interpretation of Drawings

1.1.3 Rules

1.1.4 Coordination

1.2 REFERENCES

1.2.1 National Fire Protection Association (NFPA) Publications

1.2.2 F.A.A. Specifications and Standards

PRODUCTS

Not Used

EXECUTION

Not Used

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DIVISION 16000

ELECTRICAL

PART 1 GENERAL

1.1 GENERAL

This section covers the requirements for electrical work complete. The work covered under this section consists of furnishing all labor, tools, equipment and material to install the electrical work shown on the drawings and/or described by these specifications.

1.1.1 Workmanship

All electrical installation work shall be performed by experienced electricians regularly engaged in this type of work and properly licensed when required. All materials and equipment shall be installed in conformance with the contract documents, and in accordance with recommendations of the manufacturer as approved by the Resident Engineer.

1.1.2 Interpretation of Drawings

In general, the drawings utilize accepted diagrammatic symbolism to indicate electrical construction work. This symbol does not have any dimensional significance. The layout of wiring, circuits, outlets, and equipment is developed as an engineering aid and should not be interpreted as a release from responsibility for installing the work without space conflict, but all work shall be installed in accordance with the diagrammatic intent of the drawings.

1.1.3 Rules

The installation shall conform to this specification, the contract drawings and to the applicable requirements of the National Electrical Code, local code, or FAA standards.

In cases where regulations and/or contract documents are conflicting or discrepancies occur, the more stringent requirement shall be followed and enforced.

1.1.4 Coordination

It is the responsibility of the contractor to totally familiarize himself/herself with the scope of the work involved and to coordinate his work with the other trades and personnel involved with the job site.

1.1.5 Lock Out - Tag Out (LOTO)

Contractor must follow established LOTO procedures for all existing facilities. It is the responsibility of the contractor to provide a LOTO plan for new equipment. The

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contractor shall submit this plan to the FAA for approval before any new equipment can be energized. The contractor shall locate all power lines and transformers inside the AOA that provides electrical service to the facilities covered in this specification and will install new labels as approved by the FAA on all above ground transformers. Provide two sets of spare fuses for Transformers, Switch Pads and Power Racks. See attachment for an example of information needed for the LOTO plan.

1.1.6 TRDR forms

The contractor will complete all tests and complete the TRDR forms as shown in the attachment.

1.2 REFERENCES

The issues currently in force of the following specifications and standards form a part of this section, and are applicable as specified herein:

1.2.1 National Fire Protection Association (NFPA) Publications

No. 70 National Electrical Code (current version)

No. 780 Lightning Protection Code

1.2.2 FAA Specifications and Standards

UNLESS OTHERWISE INDICATED, THE CONTRACTOR SHALL COMPLY WITH

THE FOLLOWING FAA SPECIFICATIONS AND STANDARDS:

FAA-C-1217g Electrical Work, Interior

FAA-C-1391d Installation and Splicing of Underground Cables

FAA-STD-019e Lightning and Surge Protection, Grounding, Bonding and

Shielding Requirements for Facilities and Electronic Equipment.

PART 2 PRODUCTS

Not Used

PART 3 EXECUTION

CONTRACTORS SHALL IMMEDIATELY NOTIFY THE FAA OF ANY

CONFLICTS THAT EXIST WITHIN THE CONTRACT DOCUMENTS AND

BETWEEN THOSE DOCUMENTS AND THE RULES, REGULATIONS AND

CODES OF THE LOCAL UTILITY COMPANY AND LOCAL COUNTY OR STATE

GOVERNING BODIES. IN CASES WHERE REGULATIONS AND/OR CONTRACT

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DOCUMENTS ARE CONFLICTING OR DISCREPANCIES OCCUR, THE MORE

STRINGENT REQUIREMENT SHALL BE FOLLOWED AND ENFORCED.

BASIC ELECTRICAL METHOD 16050-1

SECTION 16050

BASIC ELECTRICAL MATERIALS AND METHODS

1.0 General requirements

1.1 Scope – The contractor shall furnish all labor, equipment and materials, except GFM/GFE, required to complete the project as shown on the Contract Drawings and described within this specification.

1.1.2 Utility Service and Interruption of Service – Contact on site FAA personnel to coordinate outages for power and equipment connections. The FAA Operations at this facility are providing aircraft flight control and assistance information which is required for safety of the aircraft and the public, therefore, any power loss to facility equipment is very serious and must be carefully coordinated with facility personnel. Unscheduled interruptions of electrical service to FAA facilities or equipment may cause aircraft accidents and loss of life. Work requiring a temporary or permanent de-energization of equipment shall be scheduled in writing with the onsite FAA maintenance personnel through the Contracting Officers Representative. A 45 days advance notice is required for long term outages to NavAids equipment. Only onsite FAA maintenance personnel are authorized to energize, de-energize equipment or to operate a circuit breaker, switch or fuse in a FAA facility.

Determine all interface requirements and provide material and labor needed to complete any connections to be scheduled during an outage. Work procedures shall include lock-out/tag-out procedures in accordance with FAA order 3900.49.

1.1.3 Interpretation of Contract Drawings - In general, the drawings utilize accepted diagrammatic symbolism to indicate electrical construction work. The symbol does not have any dimensional significance. The layout of wiring, circuits, outlets, and equipment is developed as an engineering aid and should not be interpreted as a release from responsibility for installing the work without space conflict; however, all work shall be installed in accordance with the diagrammatic intent of the drawings. The contract drawings indicate the extent and approximate location and arrangement of equipment, conduit, and wiring. The Contractor shall determine exact location from field measurements, so that the outlets and equipment will be properly located and accessible.

If any conflicts occur necessitating departures from the contract drawings, details of departures and reason shall be submitted as soon as possible for written approval from the Site Representative. In the event of a discrepancy between the specifications and the drawings, the specifications shall prevail.

1.1.4 Local Utility Companies - The rules and regulations of the local utility companies providing service.

1.1.5 Minor Departures - Minor departures from exact dimensions shown in electrical plans may be permitted where required to avoid conflict or unnecessary difficulty in placement of a dimensioned item, provided all contract requirements are met. The Contractor shall

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promptly obtain approval from the Subcontract Administrator, via the Site Representative prior to undertaking any such proposed departure

1.2 Workmanship - All electrical installation work shall be performed by experienced electricians regularly engaged in this type of work and properly licensed when required.

All materials and equipment shall be installed in conformance with the contract documents, and in accordance with recommendations of the manufacturer as verified by the Site Representative.

1.3 Applicable Documents & Codes – The installation shall conform to this specification and to the applicable rules of FAA standards, NFPA 70 or local code, whichever requires the highest quality of material and workmanship. The current issues of the following documents in effect on the date of the invitation for bids form a part of this specification and are applicable to the extent specified herein.

1.3.1 Federal Specifications

A-A-59544 Cable and Wire, Electrical (Power, fixed Installation) W-C-375c Circuit Breakers, Molded Case; Branch Circuit and Service A-A-59551 Wire, Electrical, (Uninsulated) HH-I-510 B Insulation Tape, Electrical, Friction HH-I-553 Insulation Tape, Electrical (Rubber, Natural and Synthetic) HH-I-595 A Insulation Tape, Electrical, Pressure-Sensitive Adhesive, Plastic, or

Low-Temperature Application W-C-586 Conduit Outlet Boxes, Bodies and Entrance Caps W-C-1094 Conduit and Conduit Fittings; Plastic, Rigid W-F_406 B Fittings for Cable, Power, Electrical and Conduit, Metal, Flexible

W-F-408 B Fittings for Conduit, Metal, Rigid (Thick-Wall and Thin-Wall [EMT] Type)

W-F-414 Fixture, Lighting (Fluorescent, Alternation Current, Recessed and Surface Ceiling)

W-J-800 C (1) Junction Box; Extension, Junction Box; Cover, Junction Box (Steel, Cadmium, or Zinc-Coated)

W-P-115 Panel, Power Distribution W-S-610 B(1) Splice, Conductor W-S-865 Switch, Box (Enclosed), Surface - Mounted

WW-C-563 Conduit, Metal, Rigid, and Bend and Elbow, Electrical Conduit:

Thin wall Type (EMT)

WW-C-566 Conduit, Metal, Flexible WW-C-581 D(3) Conduit, Metal Rigid; and Coupling, Elbow, and Nipple, Electrical

Conduit, Zinc-Coated WW-C-582 Surface Metal Raceways

1.3.2 National Fire Protection Association (NFPA) Publications No. 70 National Electrical Code (Latest Edition) No. 780 Standard for the Installation of Lightning Protection System (latest)

BASIC ELECTRICAL METHOD 16050-3

1.3.3 National Electrical Manufacturers Association (NEMA)

TC2 Electric Plastic Tubing (EPT), Conduit (EPC-40 and EPC-80) and Fittings

TC6 PVC Plastic Utilities for Underground Installation TC7 Smooth-Wall Coilable Electrical Polyethylene Conduit WC 5 Thermoplastic Insulated Wires and Cable for the Transmission and

Distribution of Electrical Energy WC 70 Thermoplastic Insulated Wires and Cable for the Transmission and

Distribution of Electrical Energy WD1 General color requirements for Wiring Devices

1.3.4 Insulated Cable Engineers Association (ICEA) Publications

S-19-81 Rubber-Insulated Wire and Cable for the Transmission and Distribution of Electrical Energy

S-66-524 Cross-Linked Thermosetting-Polyethylene Insulated Wire and Cable for the Transmission and Distribution of Electrical Energy.

S-68-516 Ethylene-Propylene-Rubber-Insulated Wire and Cable for Transmission and Distribution of Electrical Energy

1.3.5 Underwriter's Laboratories, Inc., UL Standards

UL 6 Ridgid Metal Conduit.

UL 50 Building Materials List Cabinets and Boxes UL 96 Lightning Protection Components UL 96A Installation Requirements for Lightning Protection Systems UL 486c Splicing Wire Connectors UL 514b Fittings for Conduit & outlet Boxes UL 542 Lamp holders, Starters, and Starter Holders for Fluorescent Lamps UL 651 Schedule 40 and 80 Rigid PVC Conduit UL 797 Electrical Metallic Tubing UL 870 Wireways, Auxiliary Gutters and Associated Fittings

1.3.6 FAA Standard (included in this specification)

FAA-C-1217g Electrical Work, Interior

FAA-STD-019e Lightning protection, Grounding, Bonding and Shielding for Facilities

FAA-STD-020b Transient Protection, Grounding, Bonding and Shielding Requirements for Equipment

FAA-C-1391d Installation and Splicing of Underground Cables.

FAA-E-2072b Cable, Telephone, Exterior.

Order 6950.27 Short Circuit Analysis and Protective Device Coordination Study

Hand Book Reference.

Distribution of Electrical Energy

BASIC ELECTRICAL METHOD 16050-4

S-66-524 Cross-Linked Thermosetting-Polyethylene Insulated Wire and Cable for the Transmission and Distribution of Electrical Energy.

S-68-516 Ethylene-Propylene-Rubber-Insulated Wire and Cable for Transmission and Distribution of Electrical Energy

1.3.7 American Society for Testing and Materials (ASTM)

ASTM F2160-10 Standard Specification for Solid Wall High Density Polyethylene (HDPE) Conduit Based on Controlled Outside Diameter (OD)

ASTM 1962-11 Standard Guide for Use of Maxi-Horizontal Directional Drilling for Placement of Polyethylene Pipe or Conduit Under Obstacles, Including River Crossings

2.0 MATERIALS

2.1 General – The contractor-shall furnish all materials not specifically shown as GFM or GFE to complete the work. Materials required installing the GFE, including lugs, terminations, mounting hardware, anchoring, etc. shall be provided by the contractor at no additional cost.

Materials and equipment must comply with all contract requirements. Materials to be furnished by the contractor under this specification shall be new, the standard products of manufacturers regularly engaged in the production of such materials, and of the manufacturer’s latest designs. All materials for installation in wet locations shall be listed and labeled by Underwriters Laboratory (UL) as suitable for wet locations. All other materials provided by the contractor shall bear the label of UL if the materials are normally evaluated and labeled by UL. All materials and practices shall be in strict compliance with FAA-C-1217g and FAA-STD-19e.

2.1.1 Short Circuit Analysis and Protective Device Coordination – All fuses and circuit breakers included within this electrical power distribution system have been analyzed with the design short circuit and protective device coordination studies. Any changes or other manufacturer components that are different than those specified in these specifications could compromise the design analysis for this modification. All protective devices obtained by the Contractor for installation as per this specification shall be, as specified, or a coordination study must be performed by a Professional Engineer at the Contractor’s expense, and is subject to submittal and approval by the Site Representative. Submit time vs. current curves and all manufacturers’ specifications for these devices for approval. These documents shall be submitted to the Site Representative per section 1300 of these specifications.

2.2 Conductors -

2.2.1 Uninsulated Conductors shall be copper and shall only be used where specifically identified within the contract drawings. Uninsulated conductors shall comply with Federal Specifications A-A-59551. Conductors No 6 AWG and smaller shall be solid and contractor No 4 AWG and larger shall be stranded.

2.2.2 Insulated Conductors shall be copper in accordance with Federal Specifications A-A-

59551.

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2.2.3 Control cables shall be insulated copper conductors, shielded and jacketed.

2.2.4 Size and Type Conductors - Unless indicated otherwise on the contract drawings, all conductors shall be soft drawn copper with thermoplastic or thermosetting insulation type THW, THWN, and XHHW for general use, or type THHN for use in dry locations only.

Control wire shall be stranded. The minimum size wire, except for control wiring, shall be No. 12 AWG. Control wire shall be no smaller than No. 14 AWG. Power conductors #10 AWG and smaller shall be solid, #8 and larger shall be stranded. All temperature limitations for conductors shall be met per NEC 110-14C and table 310-16.

2.2.5 Wire Delivery - Wire and cable shall be delivered to the project site in original boxes and factory reels. Insulation shall have repetitive markings stating the manufacturer, size, type of insulation, etc.

2.3 Conductor Splices, Terminations, and Connectors - Federal Specification WA-A-59213:

Splices in stranded wire, and wire No. 8 and larger, shall be made with compression connectors. Splices in Wire No. 10 and smaller (solid) shall be made with wire nuts.

Insulated wire nuts must be taped for mechanical integrity. In either case, the splice shall be made both mechanically and electrically secure and comply with paragraph 110-14 (a) of the National Electrical Code. If the connector is not insulated, the splice shall be half wrapped with electrical plastic tape until the thickness is twice the thickness of the original insulation. All splices shall be made at accessible junction and outlet boxes except where direct burial splices are indicted. All splices, including those made with insulated wire nuts, shall be insulated with electrical tape or shrink tubing to an insulation value level equal to or greater than that of the factory insulated conductors. In cases where more than one cable must terminate at the same connection point, recommend use two wire Polaris type connectors if there is room for this configuration, or a special terminal shall be used with multiple barrels provided for multiple cable termination. Two or more cables are not allowed to terminate with one single lug designed for only one single termination. Splices made in pole bases, hanholes, manholes, or direct buried shall be made using a cast resin splice kit designed for direct burial manufactured by Raychem, 3M, or an approved equal and shall be UL listed for wet locations.

2.4 Tape – Electrical tap shall be 3M or approved equal and be suitable for application.

Plastic Tape - Federal Specification HH-I-595.

Rubber Tape - Federal Specification HH-I-553.

2.5 Fittings, Cable and Conduit - Federal Specification W-F-406 and W-F-408.

2.6 Outlet Boxes - Sheet Steel - Boxes shall be either the cast metal hub type (for receptacles) conforming to Federal Specification W-C-596 or shall be one piece galvanized steel (NEMA-1 and 2 for dry and interior locations and NEMA 3 and 4 for wet and exterior locations) type conforming to Federal Specification W-J-800. Where not sized on the

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drawings, boxes shall be sized in accordance with the NEC. Boxes shall be provided in the wiring or raceway system for pulling wires, making connections, and mounting devices. Each box shall have the volume required by the National Electrical Code for the number of conductors in the box. Each outlet and switch box shall include a grounding pigtail. Boxes installed for concealed wiring shall be provided with extension rings or plaster covers. Boxes shall not be supported from sheet metal roof decks. Boxes and supports shall be fastened with bolts and expansion shields on concrete or brick, with toggle bolts on hollow masonry units. In open overhead spaces, cast metal boxes threaded to raceways need not be separately supported. All exterior above ground receptacles and junction boxes shall be weatherproof.

2.7 Raceways -

2.7.1 Galvanized Rigid Steel Conduit (GRS) - Federal Specification WW-C-581, hot-dip galvanized. All fittings shall be threaded. All connectors shall include insulated bushings.

2.7.2 Tubing, Electrical, Zinc-Coated Metallic Steel (EMT) - Federal Specification WW-C-563.

EMT shall be mild steel, electrically welded, electro-galvanized and labeled with Underwriter Laboratory seal of approval. All EMT fittings shall be compression and steel type. Indentor type, set-screw type fitting will not be accepted. EMT connectors shall include insulated bushings.

2.7.3 Flexible Metal Conduit - Federal Specification WW-C-566. Flexible metal conduit shall be galvanized steel conforming in all respects to Underwriter's Laboratories Standards.

Flexible metal conduit and fittings shall be UL Listed as grounding type.

2.7.4 Plastic Conduit - Polyvinyl Chloride (PVC) conduit shall be schedule 40, heavy wall rigid plastic with fittings and accessories designed for direct earth burial. Exposed PVC conduit shall be sunlight resistant. Manufactured to NEMA TC-2 and Federal Specification W-C- 1094; UL listed.

2.7.5 Flexible Electric Non-Metallic Tubing - Flexible electric non-metallic tubing shall not be used.

2.8 Fuses - A complete set of fuses shall be installed and one set of spares shall be furnished for each fusible device. Fuses shall have a voltage rating not less than the circuit voltage. Fuse types shall be as indicated in the construction drawings.

2.9 Junction and Pull Box – Indoor junction and pull boxes for electrical work shall be code gauge sheet steel and provided with a flat screw cover. Exterior junction boxes shall be NEMA 4 type. Power and Control wiring shall not occupy the same junction box.

2.10 Wireways - Square duct type wireways shall conform to UL Standard 870. Wireways shall be sized as shown on the construction drawings and shall be hinged cover type. Wiring gutters shall be electrically bonded together.

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2.11 Lighting and Power Panelboards - Panelboards shall be of the size and type indicated on the construction drawings. Panel shall be dead front type, shall conform to Federal Specification W-P-115, Type I, Class 1, and shall be UL listed unless specified otherwise.

Manufactures shall be as indicated or an approved substitution. Busses shall be copper with tin coating. Front covers shall be “door-in-door” construction allowing access to circuit breaker termination by opening a hinged cover. Doors shall be lockable and be supplied with locks. Doors over 48 inches high shall have auxiliary fasteners on top and bottom. All panelboard doors, which include locks, shall have flush type cylinder locks and catches, keyed alike, with two keys furnished with each lock. Ground and neutral busses shall be provided by the manufacturer as part of the panel assembly. The panelboard shall be constructed of code gage galvanized sheet metal and shall be finished with a rust inhibiting prime coat and two coats of light gray enamel.

2.11.1 Circuit Breakers - All circuit breakers shall be the quick-made, quick-break, bolt on, thermal magnetic type, shall conform to Federal Specification W-C-375, and shall be U.L. listed. Circuit breakers shall be rated for the voltage of the circuit on which they are used, and shall have a minimum interrupting rating of 10,000 amperes, symmetrical for branch breakers, and 22,000 amperes, symmetrical for main breakers unless indicated otherwise. All circuit breakers shall have a trip indicating feature. Single pole breakers shall be a full size module, and two and three pole breakers shall be sized in even multiples of a single pole breaker. A submittal is required from the Contractor for characteristic curves for main and branch circuit breakers. Breakers shall be sized so that two single pole breakers shall not be capable of fitting in a single housing. Multi-pole circuit breakers shall have an internal common trip mechanism. All circuit breakers and the panelboards in which the breakers are installed shall be made by the same manufacturer and shall be UL listed for the panelboard. Self-enclosed circuit breakers shall be mounted in NEMA OS-1, Type 1 enclosures with trip rating, voltage rating, and number of poles as indicated on drawings.

2.11.2 Bus Bars - All buses (phase, neutral, & ground) shall be copper. Bus capacity shall be as indicated on the drawings. Circuit breaker current carrying connections to bus shall be of the bolted type, and factory assembled. Stab in types are not acceptable. Bus bar connections to branch circuit breakers shall be of the sequence phase type. The neutral bus shall be insulated from panelboards. All panelboards shall have an uninsulated ground bus bolted to the cabinet, with provision for individual branch circuit ground conductor connections, adequate in size to accommodate present and future equipment grounding conductors. Isolate ground bus from the neutral bus. The ground bus bar shall be structurally integral to the panelboard or attached to the panelboard with a bolt, nut and lock washer. If the ground bus bar is mounted to the enclosures with screw threads only, a separate, bolted ground lug shall be installed on the panelboard and bonded to the ground bus bar.

2.11.3 Directories - Directories shall be typed to indicate the load served by each circuit and shall be mounted in a holder with protective covering. The directory shall be arranged so that

BASIC ELECTRICAL METHOD 16050-8

the typed entries simulate the circuit breaker positions in the panelboard. Circuits shall be connected as indicated on drawing. Any changes shall be “As-Built” on the drawings and a new directory shall be typed to reflect the change.

2.11.4 Existing Breaker Panelboards - When adding circuits to an existing panelboard, the new breakers shall be made by the same manufacturer as the panelboard.

2.11.5 Fusible Panelboards - Not Used

2.12 Safety Switches - Safety switches shall be heavy-duty “HD” types. Switches installed outdoors, or in damp or wet locations, shall be mounted in NEMA 3R enclosures. Switch shall be of the voltage and current ratings indicated on the drawings, and each shall be capable of interrupting ten (10) times the full rated load current. The switches shall be of the quick-make, quick-break type, and all parts shall be mounted on insulating bases to permit replacement of any part from front of the switch. All current carrying parts shall be high-conductivity copper, designed to carry a rated load without excessive heating. Switch contacts shall be silver-tungsten type or plated to prevent corrosion, pitting and oxidation, and to assure suitable conductivity. Switches shall have rejection fuse blocks to prevent replacement by lower rated fuses and shall be capable of being locked in the on and off position. The Contractor shall install switches meet the applicable requirements of the National Electrical Code (NEC). The service entrance disconnect shall be UL rated for service equipment.

2.13 Surge Suppression Equipment

2.13.1 Service Entrance Surge Arrester - A fused secondary surge arrester provided with disconnect capability shall be installed on the load side of the service disconnect as close as possible to the service terminals. Separate terminating lugs shall be provided within the service disconnect for the surge arrester. The arrester input shall be internally fused for short circuit protection and shall include disconnect capability. The enclosure door shall include indicating lights to demonstrate that each suppression device is functional.

Each suppression device within the arrester shall be replaceable as a unit. Outdoor arresters shall come with a NEMA 4 enclosure and enclosure penetrations shall be watertight. Indoor arresters shall come with a NEMA 12 enclosure. Arresters shall be tested in accordance with ANSI/IEEE C62.11. In addition the arrester shall meet the following FAA-STD-019E requirements:

1. Modes of protection: L-N, L-L, L-G

2. Peak Surge Current: 3kA with 8/20uSec current impulse

3. Clamping Voltage: 400V L-N, L-G, 700V L-L for 120/208V system.

4. Clamping Voltage: 700V L-L & L-G for 277/480V system.

2.13.2 Branch and Feeder panel Surge Protective Device -Each individual branch and feeder panel shall have a Surge Protection Device (SPD) installed. The SPD shall be installed on a dedicate circuit. The SPD shall be located as close as possible to the panel board

BASIC ELECTRICAL METHOD 16050-9

with the wires being as short and straight as possible. Kinks and sharp bends shall be avoided. The enclosure door shall include indicating lights to demonstrate that each suppression device is functional. Each suppression device within the arrester shall be replaceable as a unit. Outdoor SPD shall come with NEMA 4 enclosure and enclosure penetrations shall be watertight. Indoor SPD shall come with NEMA 12 enclosure Arrester shall be tested in accordance with ANSI/IEEE C62.11. In addition the arrester shall meet the following FAA-STD-019E requirements:

1. Mode of protection: L-N, L-L, L-G

2. Peak Surge Current: 3kA with 8/20uSec current impulse

3. Clamping Voltage: 475V L-N & L-G, 775V L-L for 120/208Vsystem.

4. Clamping Voltage: 775V L-N & L-G, 1275V L-L for 277/480V system.

3.0 EXECUTION

3.1 General - The rules, regulations and specifications referenced herein shall be considered as minimum requirements for this work. This specification shall govern when conflicts occur between reference documents and this specification. All materials and equipment shall be installed in accordance with the contact drawings and the recommendations of the manufacturer as approved by the RE. The installation shall be accomplished by skilled workmen regularly engaged in this type of work. Electricians shall be properly licensed for the type of work being performed. All installation practices and materials shall conform to NFPA 70, FAA-C-1217g, FAA-STD-19e, and FAA-C-1391d.

3.2 Working Clearances - All electrical equipment installed under this project shall be in compliance with NEC Article 110.26. In no case shall the working clearances of existing equipment be infringed upon by new equipment installed under this contract.

3.3 Contract Drawing – Where the electrical drawings indicate (diagrammatically or otherwise) the work to be completed and intended function, the contractor shall furnish all equipment, material, and labor to complete these installations, and accomplish these indicated functions. Further, the contractor shall be responsible for taking the necessary actions to ensure that all electrical work is coordinated and compatible with all other project work. Minor departures from exact dimensions shown in electrical plans may be permitted where required to avoid conflict or unnecessary difficulty in placement of a dimensioned item, provided all contract requirements are met. The contractor shall promptly obtain approval from the RE prior to undertaking any such proposed departure.

3.4 Cable and conduit Cover Requirement – Cables and conduits for underground installation shall be placed at the depths shown on applicable drawings. If depths are not indicated on the drawings, minimum depth shall be as required by NFPA 70, however, in no case shall the cover be less than 24”.

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3.5 Warning Tape – A 4 inches wide plastic warning tape, 6 mil minimum thickness, shall be continuously imprinted with the appropriate legend and shall be located 6-8 inches below finish grade and directly above the cable runs.

3.6 Separation – Power and control conductors shall not occupy the same raceway. Power conduits shall be separated from control conduits by a minimum of 3 inches. Where separation is not possible, control cables shall be fire wrapped with Fire-Stop adhesive tape over the cables entire exposed length in each junction box, handhole, and pull box.

3.7 Raceway Installations -

3.7.1 General - Panelboards, surge arresters, disconnect switches, etc., shall not be used as raceways for conductor routing other than conductors that originate or terminate in these enclosures. Isolated ground conductor will be allowed to traverse these enclosures.

Minimum conduit or tubing size shall be ¾-inch, but may be ½-inch for control wiring.

Each run shall be complete before conductors are pulled into the conduit and shall be swabbed before conductors are installed. All conduit terminations shall include insulated bushings. Ends of conduit systems not terminated in boxes or cabinets shall be capped.

Crushed or deformed raceways shall not be installed. All metallic conduit enclosing AC service lines shall be terminated using conductive fittings to panelboard, the power meter, and to the service. All buried metallic conduit enclosing signal, control, status and other power lines shall be terminated using conductive fittings to facility junction boxes, equipment cabinets, enclosures, or other grounded metal structure.

3.7.2 Conduit Installations - The wiring method shall consist of insulated copper conductors pulled into rigid metallic conduit, electrical metallic tubing (EMT), or flexible metallic conduit. Conduit system shall be installed complete before conductors are pulled into the conduit. Each run shall be cleaned and swabbed before conductors are installed. The minimum size conduit shall be ¾", and may be ½” minimum for control wiring. All conduit terminations shall include insulated bushings. Unless otherwise noted on the drawings, conduit installations shall run parallel or perpendicular to the building lines in a neat and workmanlike manner. Location of exposed conduit runs will be subject to approval of the Site Representative. Conduit shall be supported as per NEC requirements.

All unused conduits shall have a pull string/wire installed with a minimum tensile strength of 200lbs. Ten inches minimum slack shall be left at each end of the conduit.

3.7.3 Field Bends - Field bends shall be avoided where possible and where necessary shall be made with standard, approved hickeys and conduit bending devices.

3.7.4 Field cutting and Threading - All field cut conduits shall be square cut and the ends carefully reamed to remove all burrs. Conduit threads shall be tapered such that they provide continuity and solidly grounded connections. The use of running threads will not be permitted.

3.7.5 Holes and Sleeves - The contractor shall provide all holes and sleeves necessary to install

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conduit and equipment. All required flashing, escutcheon, and sleeves shall be contractor furnished.

3.7.6 Galvanized Rigid Steel (GRS) - Rigid steel conduit maybe used in all locations. For installation below slab or underground, the conduit shall be factory coated with either .008 inch of epoxy resin per Spec. MIL-R-21931, .020 inch of polyvinyl chloride, or .063 inch of coal tar enamel per Spec. MIL-P-15147, or shall be field wrapped with .01 inch thick pipe wrapping plastic tape designed for this purpose applied with 50% overlap.

Method used requires prior approval by the Site Representative. All fittings for use with rigid steel conduit shall be of threaded type of the same material as the conduit. Where conduits enter NEMA type 1 boxes or cabinets without threaded hubs, grounding type double locknuts plus a phenolic insulated bushing or a metallic grounding bushing shall be used on the open end. For all other types of boxes and cabinets, use grounding hubs.

3.7.7 Electrical Metallic Tubing (EMT) - EMT may be used only in dry interior locations, and where not subject to physical damage. Fittings to be used with EMT shall be standard fittings designed for use with this type of conduit. All EMT fittings shall be the compression type. Indenter or set-screw type fittings will not be acceptable. EMT connectors shall include insulated bushings. Where conduits enter enclosures without threaded hubs, an appropriate threaded connector with cast or machined threads (not sheet metal) and locknut shall be used to securely bond the conduit to the enclosure. In addition, connectors shall have an insulated throat, smooth bell shaped end, or a metallic insulated bushing shall be installed on the interior threaded end of the conduit to protect conductor insulation. Insulated bushings shall be provided to bond ground conductor to raceway. EMT shall not be used on circuits above 600 volts, nor in sizes greater than 3 inches in diameter.

3.7.8 Flexible Steel Conduit, and Liquidtight Flexible Metal Conduit - Flexible steel conduit shall be in 6-feet or less nominal lengths for terminal connections to motors or motor driven equipment, and may be used in short lengths for other applications as permitted by the NEC. Liquidtight flexible conduit shall be used outdoors or in wet locations. A separate ground conductor shall be provided across all flexible connections, in addition to the green equipment ground, and terminated to flexible metal conduit connectors designed for this purpose. This separate ground conductor shall be installed on the outside of the flexible connection for inspection purposes and shall be strapped to the conduit between connectors. This conductor shall be shall be at least the same size as the required equipment-grounding conductor per NEC table 250-122. If Liquidtight flexible conduit is required to be longer than six (6) feet in length, the contractor shall obtain approval from the Site Representative.

3.7.9 Polyvinyl Chloride (PVC or Rigid Nonmetallic) Conduit – PVC shall be heavy wall conforming to UL 651.PVC may only be used underground, in concrete, or as a 6” maximum vertical riser above grade or floor surface to connect to metal conduit. Make joints in PVC conduit in compliance with manufacturer's instructions. Make all bends by means of an electrical heating unit approved by the conduit manufacturer where standard

BASIC ELECTRICAL METHOD 16050-12

elbows and fittings cannot be used. Rigid nonmetallic conduit may be used for lightening protection system conductors and indoors to protect signal-grounding conductors.

3.7.10 Surface Metal Raceways - Surface metal raceways shall conform to Federal Specification

W-C-582. Surface metal raceways shall be installed only in exposed, dry locations where not subject to physical damage.

3.7.11 Wireways - Square duct shall only be installed in accessible locations. Covers shall be hinged and shall also have screw fasteners. Wireways installed in wet or damp locations shall be rated for these locations.

3.7.12 Underground Conduit and Cable Depth Requirements - Unless otherwise specified, all underground cables, ducts and conduits shall be installed a minimum of 24” deep to top of conduit.

3.4 Junction, Outlet and Pull Boxes -

3.4.1 Special Construction - Furnish pull boxes as shown on the drawings for cable to be installed by others.

3.4.2 Junction, Pull and Outlet Boxes - A junction or outlet box shall be provided at each location indicated in the plans and specification, or where necessary for compliance with the National Electrical Code, or for a neat, workmanlike installation. All boxes shall be of sufficient size and shape to meet code requirements.

3.5 Supports and Fasteners - Supporting methods for all electrical equipment and branch circuitry shall conform to the best practice, utilize only approved materials, and satisfy all requirements of the National Electrical Code. Raceways shall be securely supported and fastened in place at intervals of not more than 10 feet with pipe straps, wall brackets, hangers, or ceiling trapeze. Raceways shall also be supported within 3 feet (maximum) of termination. Fastening shall be by toggle bolts on hollow masonry units; by expansion-bolts on concrete or brick; by machine screws, welded threaded studs, or spring tension clamps on steel work. Male type nylon anchors or threaded studs driven in by a power charge and provided with lock washers and nuts may be used in lieu of expansion bolts or machine screws. Raceways or pipe straps shall not be welded to steel structures. Raceways shall not be supported from sheet metal roof decks. Do not support conduit or electrical equipment with wire. All metallic electrical support structures shall be electrically continuous and shall be bonded to the multipoint ground system or the Earth Electrode System either directly or indirectly.

3.6 Cable Installation in Conduit - The Contractor shall take all necessary precautions to insure against damaging the insulation and conductor during installation in conduit. A non-petroleum based lubricant approved by Underwriters’ Laboratories shall be used if necessary to reduce tension during pulling. The cable may be pulled by power winch or by hand. Cable ends shall be sealed with cable end sealing caps or a waterproof tape.

BASIC ELECTRICAL METHOD 16050-13

Where more than one cable is installed in a conduit, all shall be pulled at the same time.

Splices shall not be pulled into a conduit. Control cable shall not be installed in the same conduit as power cable.

3.6.1 Dedicated Neutral and Grounding Conductor - Shared/common neutrals shall not be permitted. Neutral conductor sizes shall not be less than the respective feeder or phase conductor. For each 120 Volt circuit installed under this contract, the Contractor shall install a dedicated neutral and equipment grounding conductor throughout the entire circuit. The phase conductor, the neutral and the equipment grounding conductor shall be properly identified as a set at the source panel, in every J-box where a termination takes place and at each electrical device where the circuit terminates. Each utilized single pole overcurrent protective device shall have a dedicated neutral conductor.

3.7 Cable Termination - Cable terminations shall conform to NEC Article 110-14. Splices shall be made only at outlets, junction boxes, or in accessible raceways. Terminations of all control, 600V power, and coaxial cables shall be as specified. Care shall be taken not to damage conductors when removing insulation. Compression lugs, properly insulated, should be used whenever possible. Compression splices shall be taped with electrical insulating tape in a manner which makes their insulation equal to the insulation on the conductors. Wire nuts may be used to splice conductors sized #10 AWG and smaller.

Wire nuts shall be taped for mechanical security. Compression connectors shall be used to splice conductors #8 AWG and larger. Multiple cables shall not be terminated in lugs listed for only one conductor. Splicing in panelboards is not permitted.

3.8 Identification -

3.8.1 Equipment Identification - Each of the following types of equipment shall be identified with a nameplate which shows: the functional name of the unit, voltage utilized, single or three phases as applicable, the panel and circuit number powering the equipment, and any other pertinent information. Nameplates shall be non-ferrous metal or rigid plastic, stamped, embossed, or engraved with 3/8-inch minimum height lettering and numerals.

Name plate background and lettering shall be in black. The plates shall be secured to the equipment with a minimum of two screws. Switches for local lighting do not need to be identified.

Panel boards Disconnect Switches Junction Boxes Additional equipment shall be identified as required in the construction documents.

3.8.2 Conductor identification - In addition to color coding, all feeder, line, phase, branch, and neutral conductors shall be identified by shrink embossed labels, markers, or equivalent means as approved by the Site Representative. Panel and circuit numbers shall be identified. Conductor identification shall be provided at all terminations, and in all junction boxes through which these conductors pass.

BASIC ELECTRICAL METHOD 16050-14

3.8.3 Special Identification - All panelboards and disconnects which are added or modified in this project shall have the following yellow background type label with black lettering engraved and attached according to section 3.7.1. The first line shall be ½-inch lettering.

CAUTION – SELECTIVELY COORDINATED

THIS EQUIPMENT MUST BE REPLACED WITH

IDENTICAL PROTECTIVE DEVICE TO

MAINTAIN SELECTIVE COORDINATION

3.9 Color Coding of Power Conductors - All wiring, including feeders, shall be color coded as specified herein. The color-coding shall be continuous throughout the facility on each phase conductor to its point of utilization so that the conductor phase connection is readily identifiable. All feeder and branch circuits, including neutral conductors, shall be identified at both ends of the conductor with panel and circuit number indicated. Neutral conductors shall be continuous. For conductors No. 4 AWG and larger, where color-coding is not available, color-coded tape, half lapped for a minimum length of 3 inches shall be used. In no case, however, shall green insulated conductors be re-identified for purposes other than grounding, nor shall white or neutral gray conductors be re-identified as other than grounded (neutral) conductors. Where conductors are color coded in this manner, they shall be color coded in all junction boxes and pullboxes, accessible raceways, panelboards, outlets, and switches, as well as at all terminations. Conductors shall be color coded as follows:

Phase Conductors - Phase conductors shall be color coded as follows:

240/120V

1-PH 3-W

(240) 208Y/120V 3-PH 3or4-W

480Y/277V

3-PH 4-W

Phase A Black Black Yellow Phase B Red Red Brown Phase C Blue Orange Neutral White White Grey/White

Color coding for conductors in control cables shall be in accordance with NEMA Standard WC-5. DC power conductors shall be color coded as follows: Positive conductor, red with brown tracer. Negative conductor, brown with red tracer.

3.9.1 Application - Where color coding is not available, color coded tape, half lapped for a minimum length of 3 inches shall be used. Where conductors are color coded in this manner, they shall be color coded in all junction boxes and pullboxes, accessible raceways, panelboards, outlets, and switches, as well as at all terminations. Conductors in open raceways and junction boxes shall be color coded at a maximum of 3’-0” intervals.

3.10 Grounding and Bonding - Grounding shall be in accordance with NFPA 70, FAA-C-1217

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g (Section 4.4), and FAA-STD-019E. The grounding system for the facility shall be as indicated on the contract drawings and as specified. An equipment grounding system to properly safeguard equipment and personnel shall supplement the grounded neutral of the secondary distribution system. Each overcurrent device shall have its own equipment-grounding conductor. A green insulated ground wire shall be installed in each conduit used for power conductors to light fixtures, receptacles, and all electrical equipment. All metallic non-current carrying parts of electrical equipment shall be grounded with an equipment grounding conductor whether or not shown on the drawings. When surface metal raceways, wireways, or cable rack systems are installed, a separate copper conductor shall be installed on the raceway and shall be properly bonded to each section.

The size of this wire shall be #6, unless otherwise indicated.

3.10.1 Equipment Grounding Conductors - See Table 250-122 of the National Electrical Code for minimum size of this conductor. Bare conductors shall not be permitted except for exterior use. Where insulation is required it shall be green for equipment grounding conductors number 6 AWG and smaller. Equipment grounding conductors larger than number 6 AWG and equipment grounding conductors in multiconductor cables (any size) shall be identified by marking all exposed insulation with green tape.

3.11 The Grounding Electrode Conductor for the electrical service shall be as sized on the drawings and shall be connected to the earth electrode system with an exothermic weld in an access well. This conductor shall be connected to a neutral bus inside the main service disconnect. This ground bus shall be connected to the neutral bus only at this location.

3.12 Painting and Finishing - Where factory finishes are provided on equipment and no additional field painting is specified, all marred or damaged surfaces shall be touched up or refinished so as to leave a smooth, uniform finish at the time of final inspection as directed by the Site Representative.

3.13 Repair of Existing Work - Electrical work shall be carefully laid out in advance. Where cutting, channeling, chasing, or drilling of floors, wall partitions, ceilings, or other surfaces is necessary for the proper installation, support, or anchorage of the conduit, raceways, or other electrical work, it shall be carefully done. Damage to the building, piping, or equipment shall be repaired by skilled mechanics of the trades involved at no additional cost.

3.14 Surge Arrester - Arrester shall be compatible with the service voltage, and shall be wired to avoid loops, sharp bends and kinks, and to minimize the length of the conductor and number of bends. Arrester enclosure shall be mounted within 4” or less of the service disconnect enclosure and shall be close nipple directly to the service disconnect.

Conductor length shall not exceed 12” unless approved by the Site Representative. There shall be no interconnection between neutral and ground within the arrester.

3.15 Demolition Repair - Wall sections exposed by demolition of equipment under this

Contract shall be repaired/refinished to match existing. All penetrations and mounting

BASIC ELECTRICAL METHOD 16050-16

holes shall be sealed weather-tight and refinished to match surrounding surface. All repairs shall be made to the satisfaction of the Site Representative.

3.15 Mechanical Equipment - Contractor shall provide all conduits, J-boxes, cable, lugs, terminations, disconnects, protective devices, etc. as required to complete power and control service to all mechanical equipment installed/affected by this Contract. The Contractor shall coordinate all work between mechanical and electrical Sub-Contractors to complete fuel and ventilation systems even if not specifically identified within the drawings. Installation not specifically covered in the construction documents shall be performed per the manufacturer recommendations. Mechanical systems shall be tested and meet requirements outlined in mechanical drawings and specifications.

4.0 QUALITY ASSURANCE

4.1 General - The Contractor shall keep records of all tests performed and shall submit, per

Specification Section 01300. a letter type test report to the Site Representative prior to final FAA inspection of the Contractor’s work. The report shall list the tests performed and results obtained.

4.1.1 Tests - The Contractor shall furnish the instruments, materials and labor necessary to perform the following tests. All tests shall be performed in the presence of the Site Representative or his/her designated representative. See Specification Section 16950 and FAA-C-1391d for more information on required testing.

4.1.2 Continuity Tests - Before connection of material, the Contractor shall perform continuity testing on all conductors installed under this job. Submit 6 copies of test reports to the Site Representative for approval prior to equipment connections. Test reports shall include circuit #, phase time and date of test, equipment served, test results, and signature of the person conducting the test.

4.1.3 Insulation Resistance Tests - Feeders and branch circuits 600V or below shall have their insulation tested after installation, but before connection to fixtures or appliances. Motors shall be tested for grounds or short circuits after installation but before start-up. All conductors shall test free from short circuits and grounds, and a minimum insulation resistance phase-to-phase and phase-to-ground shall be 50 mega ohms measured with a 500-volt DC insulation resistance tester (As per FAA-C-1217g section 5.3.4.).