Specs_Am0003.pdf

Replace Interior 480V Station Service Equipment, Ft Randall Dam FRD7

SECTION TABLE OF CONTENTS

DIVISION 26 - ELECTRICAL

SECTION 26 00 00.00 26

GENERAL ELECTRICAL WORK AND EQUIPMENT

PART 1 GENERAL

1.1 DESCRIPTION OF WORK

1.2 REFERENCES

1.3 SUBMITTALS

1.4 GENERAL REQUIREMENTS

1.4.1 Materials, Equipment and Installation

1.4.2 Standard Products

1.4.3 Environmental Requirements

1.4.4 Storage and Handling

1.4.5 Corrosion Prevention

1.5 CONTRACT DRAWINGS

1.5.1 General

1.5.2 Departure From Drawings

1.6 WORKMANSHIP

PART 2 PRODUCTS

2.1 CONDUIT

2.1.1 Rigid Metal Conduit

2.1.2 Liquid Tight Flexible Steel Conduit

2.1.3 Rigid Metal Conduit Fittings

2.1.4 Conduit Hangers

2.1.5 Wireways

2.2 INSULATED WIRE AND CABLE

2.3 TERMINAL BLOCKS

2.3.1 General

2.3.2 Control Signal Type

2.3.3 Power Terminal Blocks

2.3.4 Marking

2.4 Conduit Pull Boxes

2.4.1 General

2.5 SELECTOR SWITCHES

2.6 ESCUTCHEONS AND NAMEPLATES

2.7 INDICATING LAMP ASSEMBLIES

2.8 INDICATING METERS

2.8.1 Instrument Transformers

2.8.2 Voltmeters

2.8.3 Ammeters

2.8.4 Wattmeters

2.9 SWITCHGEAR TERMINATIONS

2.10 MOLDED-CASE CIRCUIT BREAKERS

2.11 FUSES

2.11.1 FUSES

2.11.2 FUSE BLOCKS

2.12 MAINTENANCE

2.12.1 Spare Parts

PART 3 EXECUTION

SECTION 26 00 00.00 26 Page 1 Am0003

3.1 DEMOLITION, INSTALLATION, AND RECONFIGURATION

3.2 NEW 480 VAC SWITCHGEAR RETRO-FILL

3.3 CONDUIT

3.3.1 General

3.3.2 Installation

3.3.3 Pull Wires

3.3.4 Changes in Direction of Runs

3.3.5 Exposed Conduit

3.3.5.1 General

3.3.5.2 Conduit Cleaning

3.3.5.3 Conduit Inspection

3.3.6 Exposed Raceways

3.3.7 Supports

3.3.8 Expansion Fittings

3.3.9 Grounding of Conduit System

3.3.10 Coordination

3.3.11 Cutting and Threading

3.3.12 Thread Compound

3.3.13 Bends

3.3.14 Termination at Sheet Metal Boxes

3.3.15 Termination at Cast Boxes

3.3.16 Outlet Boxes as Part of Conduit System

3.3.17 Mandrel Requirement

3.4 WIREWAYS

3.5 BOXES AND ENCLOSURES

3.5.1 General

3.5.2 Installation

3.6 WIRE AND CABLE

3.6.1 General

3.6.2 External Wiring

3.6.3 Internal Wiring

3.6.4 Terminations

3.6.5 Identification

3.7 GROUNDING

3.8 FEEDER CABLES

3.8.1 Installation

3.9 PAINTING

3.9.1 New Equipment

3.9.2 Existing Equipment

3.10 DISPOSAL OF REMOVED EQUIPMENT

3.11 DELIVERY, STORAGE, AND HANDLING

3.12 TEMPORARY POWER

3.13 FIELD TESTING

-- End of Section Table of Contents --

SECTION 26 00 00.00 26 Page 2

SECTION 26 00 00.00 26

GENERAL ELECTRICAL WORK AND EQUIPMENT

PART 1 GENERAL

1.1 DESCRIPTION OF WORK

This section specifies the electrical equipment and work required to complete the Fort Randall Replace Interior 480V Station Service Equipment.

All equipment and systems shall be fully operational as per the plans and specifications, which provide an overview of the major equipment covered by this contract.

This contract installation shall be in accordance with NFPA 70 and IEEE C2 except where otherwise specifically indicated on the contract drawings or called for in the specifications. Omission of details on the drawings or in the specifications shall not be construed as permitting deviations from Code requirements.

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI C12.1 (2008) Electric Meters Code for Electricity Metering

ANSI C39.1 (1981; R 1992) Requirements for Electrical Analog Indicating Instruments

ANSI C80.1 (2005) American National Standard for Electrical Rigid Steel Conduit (ERSC)

ASTM INTERNATIONAL (ASTM)

ASTM A 123/A 123M (2009) Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

ASTM A 153/A 153M (2009) Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM A 780/A 780M (2009) Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE C2 (2012; Errata 1 2012; INT 1-4 2012; Errata

2 2013; INT 5-7 2013; INT 8-10 2014; INT

SECTION 26 00 00.00 26 Page 3

11 2015) National Electrical Safety Code

IEEE C57.13 (2008; INT 2009) Standard Requirements for Instrument Transformers

NATIONAL ELECTRICAL CONTRACTORS ASSOCIATION (NECA)

NECA 1 (2010.01.01) Standard for Good Workmanship in Electrical Construction

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA AB 3 (2006) Molded Case Circuit Breakers and Their Application

NEMA FB 1 (2007) Standard for Fittings, Cast Metal Boxes, and Conduit Bodies for Conduit, Electrical Metallic Tubing, and Cable

NEMA FU 1 (2012) Low Voltage Cartridge Fuses

NEMA ICS 2 (2000; R 2005; Errata 2008) Standard for Controllers, Contactors, and Overload Relays Rated 600 V

NEMA ICS 5 (2000; R 2010) Control Circuit and Pilot Devices

NEMA/ANSI C12.11 (2007) Instrument Transformers for Revenue Metering, 10 kV BIL through 350 kV BIL (0.6 kV NSV through 69 kV NSV)

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2017) National Electrical Code

UNDERWRITERS LABORATORIES (UL)

UL 6 (2007; reprint Nov 2010) Electrical Rigid Metal Conduit-Steel

UL 360 (2009; R 2009) Standard for Liquid-Tight Flexible Steel Conduit

UL 467 (2007) Grounding and Bonding Equipment

UL 489 (2009; Reprint Jun 2013) Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures

UL 514B (2004; R 2006 thru 2009) Conduit, Tubing and Cable Fittings

UL 870 (2008) Standard for Wireways, Auxiliary Gutters, and Associated Fittings

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation.

SECTION 26 00 00.00 26 Page 4

When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with SECTION 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Equipment Crate Size, Storage Location and Proposed Routing at Site;

G, HDC

Submit no less than 60 days prior to equipment delivery

SD-03 Product Data

Equipment

Within 60 calendar days after receipt of notice to proceed, submit manufacturer's data, drawings, catalog cuts, and wiring diagrams.

Submitted manufacturer's data sheets shall be color copies of the original documents and be of good quality, easily read and marked or highlighted indicating the specific equipment being submitted and labeled as to which equipment (by designation) the submitted equipment is installed with and show compliance with the contract specifications. Manufacturer's data sheets submitted for the O&M manuals shall be the original documents and not be copies. As a minimum, submittals shall be required for but not be limited to the following:

Rigid Metal Conduit; G, HDC

Rigid Metal Conduit Fittings; G, HDC

Conduit Hangers; G, HDC

Wireways; G, HDC

Terminal Blocks; G, HDC

Selector Switches; G, HDC

Escutcheons and Nameplates; G, HDC

Indicating Lamp Assemblies; G, HDC

Indicating Meters; G, HDC

Molded-Case Circuit Breakers; G, HDC

SD-06 Test Reports

Field Test Reports; G, HDC Submit within 14 days after completion of tests, PARAGRAPH Field Testing.

SD-08 Manufacturer's Instructions

Spare Parts; G, HDC

SECTION 26 00 00.00 26 Page 5

1.4 GENERAL REQUIREMENTS

1.4.1 Materials, Equipment and Installation

New and unused materials and equipment shall be furnished and any defective material or equipment damaged in the course of installation shall be replaced or repaired. Existing conduits shall be reused except where called out as new on the contract drawings; or as approved by the Contracting Officer's Representative. Testing shall be performed to check the installation of and the proper operational functions of the accessory electrical equipment per SECTION 26 08 01.00 26 SYSTEMS TESTING AND COMMISSIONING. The installations shall be in accordance with the National Electrical Code, NFPA 70, and the National Electrical Safety Code, IEEE C2, except where otherwise specifically shown or specified, in which case the drawings and specifications shall govern. Omission of details on the drawings or in the specifications shall not be construed as permitting deviations from Code requirements.

1.4.2 Standard Products

Material and equipment shall be the standard products of manufacturers regularly engaged in the manufacture of these products and shall essentially duplicate items that have been in satisfactory use for at least 2 years prior to proposal due date.

1.4.3 Environmental Requirements

Communication, control, and protective equipment shall be rated for continuous operation in ambient environmental conditions of 0 degrees C to 50 degrees C (32 degrees F to 120 degrees F), and 0 percent to 90 percent relative humidity, non-condensing. Power equipment shall be rated as required in these specifications.

1.4.4 Storage and Handling

Electrical equipment shall be shipped as completely assembled and wired as feasible so as to require a minimum of installation work. All electrical material and equipment delivered to site, shall until immediately prior to installation, be protected from damaging environmental and construction activities. Special care shall be taken for panelboards, transformers, switchgear, and control equipment. Control equipment shall include, but not be limited to, meters, wire and cables and various types of switches.

The above equipment and devices shall be kept dry and free from precipitation and condensation during storage, installation, and after installation. All electrical equipment shall be stored in in accordance with the manufacturer's recommendations to prevent damage. Method of on-site storage and storage containers will be subject to approval by the Contracting Officer. The Contractor shall be responsible for energizing the heaters mounted in the equipment or to provide other means as required to avoid damage to the equipment due to humidity, weather, and other damaging environmental activities.

1.4.5 Corrosion Prevention

Equipment shall be protected to prevent deterioration from corrosion. The general requirements are specified below; however, other corrosion-resisting treatments that are the equivalent of those specified may be used.

SECTION 26 00 00.00 26 Page 6

a. Fastenings and Fittings. Screws, bolts, nuts, pins, studs, springs, washers and other miscellaneous fastening devices and fittings shall be of corrosion-resistant material or shall be treated in an approved manner to render them resistant to corrosion. Fasteners exposed directly to the weather shall be of corrosion-resisting material.

b. Corrosion-Resisting Materials. Corrosion-resisting steel, copper, brass, bronze, copper-nickel-copper alloys are acceptable corrosion-resisting materials.

c. Corrosion-Resisting Treatments. Treatments shall be in accordance with ASTM A 123/A 123M or ASTM A 153/A 153M.

d. Finish. Final painting shall be done in accordance with paragraph

PAINTING.

1.5 CONTRACT DRAWINGS

1.5.1 General

The contract drawings indicate the work to be accomplished in as much detail as is practical. Except for such modifications as may be required for coordination with equipment actually furnished (either supplied by the Government or by the Contractor), they constitute the working drawings for construction and for purchase of required materials. When shop drawings for equipment to be furnished by the Government and installed by the Contractor have been "Approved", the appropriate contract drawings for installation of embedded or exposed Contractor furnished material will be revised by the Contractor as required. Where design changes, required for coordination, affect contract drawings showing location or terminating details for conduit, grounding, wiring, piping, etc., prints of such contract drawings, indicating necessary changes as approved, or equivalent field sketches, will be furnished by the Contracting Officer.

1.5.2 Departure From Drawings

a. If departures from the contract drawings other than those required for equipment actually furnished, are deemed necessary by the Contractor, details of such departures and reasons therefore shall be submitted to the Contracting Officer for approval as soon as practicable, but not later than 30 days before scheduled installation date. No such departures shall be made without prior approval.

b. The control schemes shown in the reference drawings for Contractor-furnished equipment are not intended to exclude available standard package units for the functions indicated. However, when alternate equipment proposed by the Contractor is approved, the Contractor shall be responsible for any additional devices, conduit and wiring required as a consequence and such additional devices, etc., shall be furnished and installed at no additional cost to the Government.

1.6 WORKMANSHIP

All work shall be completed in a neat and workmanlike manner and shall conform to the best modern practice in the class of work regardless of any omission in the drawings and specifications. Accepted industry practices are as described in NECA 1 and other ANSI approved installation standards.

SECTION 26 00 00.00 26 Page 7

PART 2 PRODUCTS

2.1 CONDUIT

All conduit shall be galvanized rigid steel, except where specifically shown or specified otherwise. Manufacturer's descriptive literature shall be submitted for approval

2.1.1 Rigid Metal Conduit

Rigid metal conduit shall be minimum 3/4-inch trade size and shall, in addition, be zinc coated (galvanized) both inside and outside by the hot-dip method and shall conform to UL 6 and ANSI C80.1. Thin-wall or EMT conduit will not be allowed at any location.

2.1.2 Liquid Tight Flexible Steel Conduit

Conduit shall conform to UL 360. Conduit shall have an interlocked flexible galvanized steel core with a permanently bonded waterproof exterior gray polyvinyl chloride jacket. Conduits 1-1/4 inch and smaller shall have an internal copper bonding conductor wound spirally in the space between each convolution for the equipment ground provided by the manufacturer. Flexible conduit shall only be used on connections to equipment subject to motion, and shall have a maximum length of 36 inches and installed only where approved by the Contracting Officer's Representative.

2.1.3 Rigid Metal Conduit Fittings

Rigid metal conduit fittings shall be threaded and cadmium- or zinc-coated (by hot-dipped galvanizing or by electroplating) on the inside and outside and shall conform to NEMA FB 1, UL 467, and UL 514B. Fittings shall be galvanized cast or malleable iron. Expansion fittings shall be UL Listed, shall allow up to 4 inches of movement, be required at construction joints, and have external Bonding jumpers. Fittings for flexible conduit shall provide positive bonding, have external jumpers, and shall conform to

UL 514B

2.1.4 Conduit Hangers

a. Conduit hangers shall be fabricated from two or more galvanized steel hanger rods, a galvanized steel horizontal member, U-bolts, clamps, and other attachments as necessary for securing hanger rods and conduits. Hanger rods shall be not smaller than 3/8-inch diameter and threaded either full length or for a sufficient distance at each end to permit at least 1-1/2 inches of adjustment. Horizontal members shall be standard structural steel shapes such as angles or channels, 1-1/2 by 1-1/2 inch or 1-5/8 by 1-5/8 inch, 12 gauge, cold-formed, lipped channel, and designed to accept special spring-held hardened steel nuts for securing hanger rods or other attachments. Nuts and clamps shall be compatible with the channel. Two or more channels may be welded together to form horizontal members of greater strength. All members shall be hot-dip galvanized after fabrication in accordance with ASTM A 123/A 123M or ASTM A 153/A 153M as applicable.

b. Conduit hangers shall be capable of supporting a load equal to the sum of the weights of the conduits and wires, the weight of the hanger itself, plus 200 pounds. The stress at the root of the thread of the hanger rods shall be not more than 9,475 psi at design load. The

SECTION 26 00 00.00 26 Page 8 horizontal member shall be sized such that the maximum stress will be not more than 12,650 psi at design load. Hanger assemblies shall comply with the applicable requirements of SECTION 13 48 00.00 26, SEISMIC RESTRAINT FOR MECHANICAL AND ELECTRICAL EQUIPMENT.

2.1.5 Wireways

Wireways shall be Listed to UL 870. Wireways and all fittings and connectors shall be made of sheet metal, except for the battery monitoring system wireway which may be non-metallic as recommended by the battery monitoring system supplier. Covers and bodies of wireways shall otherwise have minimum thickness equal to 18 gauge steel. Seams shall be continuously welded and ground smooth, with no screws or bolts protruding into the inside of the wireway. All edges and corners shall be rounded and smooth. All covers and connectors including elbows, tees, crosses, nipples, and closure plates shall be gasketed. Metallic wireways shall be NEMA Type 12.

2.2 INSULATED WIRE AND CABLE

Wire and cable used for power, lighting, control, metering, and relaying systems shall be provided by the Contractor and shall conform to the requirements specified in SECTION 26 05 19.00 26, INSULATED WIRE AND CABLE.

2.3 TERMINAL BLOCKS

2.3.1 General

Terminal blocks shall be UL listed. Terminal blocks shall be removable and of the binding, fillister or washer-head screw type, or stud type with contact and locking nuts. Terminal blocks shall be molded type with barriers, equipped with hinged covers to protect against inadvertent contact rated not less than 600 volts. Each terminal shall be not less than No. 10 in size, having length and space for connecting at least two No. 12 AWG conductors using ring tongue connectors to each terminal. Terminal blocks shall be provided to terminate all internal and external cables and shall contain at least four spare terminals or 10 percent, whichever is greater. Terminal blocks shall be rated, at minimum, for 90 degree C terminations. Manufacturer's descriptive literature shall be submitted for approval. Terminal blocks provided as part of the breaker retrofill unit, for internal wiring only, are to be the manufacturer standard products.

2.3.2 Control Signal Type

All terminal blocks for control signal wiring, shall be sliding link disconnect molded or fabricated type with barriers, rated not less than 600 volts with 30 ampere capacity and shall be States terminal block type NT or equivalent that have sliding link for testing, high barrier between poles, with marker strips for circuit identification and heavy nickel plated brass contacts.

2.3.3 Power Terminal Blocks

Terminal blocks for 120 VAC and 480 VAC and all DC connections in terminal cabinets shall be rated not less than 600 volts and of adequate capacity for the conductors. The terminals shall be of either the stud type with contact nuts and locking nuts or of the removable screw type, having length and space for at least two ring-tongue terminals of the size required on the conductors to be terminated. For conductors rated more than 50 amperes, SECTION 26 00 00.00 26 Page 9 screws shall have hexagonal heads. Conducting parts between connected terminals shall have adequate contact surface and cross-section to operate without overheating. Each connected terminal shall have the circuit designation or wire number placed on or near the terminal in permanent contrasting color.

2.3.4 Marking

White or other light-colored plastic marking strips, fastened by screws to each terminal block, shall be provided for wire designations. Marking strips for rail terminal blocks may be fastened by another means than screws. The manufacturer's wire number and the Government's wire number shall both be shown for each connected terminal on the marking strips with permanent marking fluid. The marking strips shall be reversible to permit marking both sides, or two marking strips shall be furnished with each block, to accommodate the two sets of wire numbers.

2.4 Conduit Pull Boxes

2.4.1 General

The following simplified rules are for use with conductors covered with accepted jacket materials per SECTION 26 05 19.00.26 INSULATED WIRE AND

CABLE:

a. When odd sized dimensions are obtained the next larger standard size should be used. References to conduit diameter should be used as trade size.

b. Straight Pulls: The length of the box should not be less than 12 inches or 12 times the diameter of the largest conduit, whichever is greatest. The width should not be less than the sum of the locknut diameters plus 1/2 inch between adjacent conduits and between locknuts and box edges. The depth should not be less than 4 inches for conduits up to 2 inches in size and two times diameter for all others.

c. Angle Pulls: The length of the box should not be less than 12 inches or 8 times the diameter of the largest conduit, whichever is greatest. The distance should be increased for additional conduits by the sum of the diameters of the conduits entering the same side of the box. Where conductors turn 90 degrees and parallel to the cover the box length and width should be equal and the depth should be determined the same as for straight pulls. Where the conductors turn 90 degrees in a plane perpendicular to the cover the width should be determined the same as for straight pulls and the depths should be equal to the length.

2.5 SELECTOR SWITCHES

Control, instrument and selector switches shall be of the rotary switchboard type rated for alternating-current operation at 600 volts and conform to NEMA ICS 5. On all switches, contacts shall be capable of satisfactorily withstanding a life test of at least 10,000 operations with rated current flowing in the switch contacts, and shall be capable of continuously carrying 20 amperes without exceeding a temperature rise of more than 30 degrees C above ambient. The single-break inductive load interrupting ratings shall be not less than 1.5 amperes for 125 volts DC or 10 amperes for 120 volts ac. Each switch shall be provided with ample contact stages including spare contacts where shown on the drawings to

SECTION 26 00 00.00 26 Page 10 perform the functions of the control system. Contacts of switches shall be self-aligning and shall operate with a wiping action. A positive means of maintaining high pressure on closed contacts shall be provided.

Compression springs or pivoted joints shall not be depended upon to carry current. The covers or plates on the switches shall be readily removable for inspection of contacts. Each switch shall be provided with an escutcheon clearly marked to show each operating position. Switch identifications and handle positions shall be engraved on escutcheons or may be provided on separate nameplates. Escutcheon engravings shall be white on a black background. Manufacturer's descriptive literature shall be submitted for approval for all switches.

2.6 ESCUTCHEONS AND NAMEPLATES

Identifying nameplates shall be provided and are in addition to manufacturer's nameplates and shall be made of 1/16-inch thick laminated sheet plastic or of 1/32-inch thick anodized aluminum engraved to provide white letters on a black background. All nameplates shall be fastened to enclosures in proper positions with black finished round-head screws. In general, each control switch shall be provided with an identifying nameplate in addition to an escutcheon plate to show operating position as shown in the contract drawings. Nameplates designations shall be submitted for approval. Nameplates for cabinets shall be as shown in the contract drawings. Designations may be changed when shop drawings are submitted for approval.

2.7 INDICATING LAMP ASSEMBLIES

Indicating Lamp Assemblies shall be of the switchboard type, insulated for up to 140-volt dc service, with appropriate colored caps and integrally mounted resistors for up to 140-volt service. Lamps shall be long-life LED type with a minimum normal life span of 50,000 hours. Color caps shall be made of material, which will not be softened by the heat from the lamps.

Indicating lights shall be visible from at least 20 feet away at lighting levels not less than those identified in Table 111-1 of IEEE C2. Lamps shall be replaceable from the front of the panels, and any special tools required for lamp replacement shall be furnished. Insofar as practicable, all color caps shall be similar and interchangeable, and all lamps shall be of the same type and rating. Manufacturer's descriptive literature shall be submitted for approval for all indicating lights.

2.8 INDICATING METERS

2.8.1 Instrument Transformers

All transformers used for metering shall meet the requirements of NEMA/ANSI C12.11 and IEEE C57.13. Voltage transformers shall be protected with removable primary and secondary fuses. Fuses shall be installed in each ungrounded lead and located adjacent to the transformers in an easily accessible place. If cable connections to current transformer primary are required, terminals of an approved solderless type and proper size shall be furnished. If current transformers are connected to buses, proper connections shall be furnished, complete with bolts, nuts, washers and other accessories.

Electrical indicating instrument relays shall comply with the applicable portions of ANSI C12.1 and ANSI C39.1. Unless otherwise indicated, electrical indicating instruments shall be of the semi-flush, back-connected, dustproof, direct-reading, switchboard type, approximately

SECTION 26 00 00.00 26 Page 11

108.0 mm square, (4-1/4 inches square,) with white dials, analog-style scale arcs of approximately 250 degrees. The accuracy of each instrument shall be within 1 percent of full scale. Indicators shall be provided with zero adjustments readily accessible from instrument fronts without disassembly. Each instrument shall be accurately calibrated for use with the associated instrument transformers, and shall have the indicated scale or a scale suitable for the application, where a specific scale is not indicated.

2.8.2 Voltmeters

Voltmeters shall be provided with expanded scales and calibrated to indicate the nominal phase-to-phase voltages at approximately 80% scale.

Switchboard type voltmeters shall be provided where indicated on the drawings. Voltmeter, range 0 to 600 volts, complete with selector switch having off position and positions to read each phase to phase voltage.

2.8.3 Ammeters

Ammeters shall be provided with expanded scales and calibrated to indicate the nominal phase currents at approximately 80% scale. Switchboard type ammeters shall be provided where indicated on the drawings. Ammeter, range 0 to 1500 amps for each of MSSS A and MSSS B; 0 to 800 amps for the Intake switchgear, complete with selector switches having off position and positions to read each phase (A, B, C) current.

2.8.4 Wattmeters

Wattmeters shall be provided with expanded scales and calibrated to indicate the nominal kilowatts at approximately 80% scale. Switchboard type wattmeters shall be provided where indicated on the drawings. Wattmeter range shall be 0 to 1500 KW for each of MSSS A and MSSS B. Provide a single selectable display for watts.

2.9 SWITCHGEAR TERMINATIONS

Preinsulated confined-crimped ring-tongue terminals or indented ring-tongue terminals shall be used on all wires terminated on screw or stud terminals. Terminals shall be properly sized for the wire and color coded for different size wire, for easy inspection. All screw terminals shall have toothed lock washers and all stud terminals shall have contact nuts and either locking nuts or lock washers. Terminal blocks shall be as per paragraph 2.3 "TERMINAL BLOCKS".

2.10 MOLDED-CASE CIRCUIT BREAKERS

Molded case circuit breakers (note - this does not apply to the 480 VAC SWITCHGEAR RETRO-FILL) shall conform to the applicable requirements of UL 489 and NEMA AB 3 and NEMA ICS 2, shall be fully rated, and shall have voltage ratings and interrupting ratings as follows:

Voltage Interrupting Rating

600 VAC 42 kA

120 VAC 10 kA

SECTION 26 00 00.00 26 Page 12

Voltage Interrupting Rating

125 VDC 10 kA

The circuit breakers shall be manually-operated and shall have trip-free operating mechanisms of the quick-make, quick-break type. All poles of each breaker shall be operated simultaneously by means of a common handle, and shall be enclosed in a common molded plastic case. The contacts of multi-pole breakers shall open simultaneously when the breaker is tripped manually or automatically. The operating handles shall clearly indicate whether the breakers are in "On", "Off", or "Tripped" position. Molded case breaker installation shall be such that the breaker can be locked in the open position for equipment maintenance. The circuit breakers shall be of the individually-mounted, stationary type, shall all be products of the same manufacturer, and shall be interchangeable when of the same frame size. Each circuit breaker shall be provided with mechanical pressure type terminal lugs for single-conductor stranded copper cables of the size required by the specifications or as shown. Commercial type circuit breakers similar to Westinghouse Quicklag or Siemens Energy & Automation Type ITE EQ shall not be acceptable.

2.11 FUSES

2.11.1 FUSES

Fuses rated up to 30 amperes, 600 volts or less shall be the nonrenewable cartridge type. Fuses shall conform to NEMA FU 1. Fuses shall be labeled showing UL class, interrupting rating, and time-delay characteristics, when applicable. Additionally, fuse information shall be clearly listed on equipment drawings. Fuse holders shall be field-mounted in a cabinet or box and in accordance to UL 512. Field installation of fuse holders made of such materials as ebony asbestos, Bakelite, or pressed fiber shall not be used.

2.11.2 FUSE BLOCKS

Fuse blocks shall be rated 600 volts. The terminals shall be removable binding, fillister, washer head screw type, or high density screw type.

Each terminal shall be not less than No. 10 in size, having length and space for connecting two No. 12 AWG conductors to each terminal.

2.12 MAINTENANCE

2.12.1 Spare Parts

All spare parts shall be duplicates of the original parts furnished and interchangeable therewith. The spare parts shall be packaged for long term protection and storage. The packaging shall be legibly labeled to identify the spare parts. A list of the furnished spare parts shall be included in the Operation and Maintenance Manual. The following spare parts for the equipment specified in this contract section shall be provided.

a. Six (6) spare fuses of each type and rating used.

b. Two (2) spare indicating light assemblies of each type used.

c. Ten (10) spare lamps of each type used in indicating lights.

SECTION 26 00 00.00 26 Page 13

d. Two (2) spare sets of control switch replacement contacts of each 10 or fraction thereof of each type used.

e. Two (2) spare replacement relays of each type used.

f. One (1) spare switch (control, instrument, selector) of each type used.

g. One (1) spare voltmeter of each type used.

h. Two (2) spare indicating light lenses of each color used.

i. One (1) spare circuit breaker of each type used.

j. One (1) pint of paint to exactly match the finish of the new switchboard panels.

PART 3 EXECUTION

3.1 DEMOLITION, INSTALLATION, AND RECONFIGURATION

Demolition, installation and reconfiguration shall be coordinated with the contract's Commissioning Specification sections. The contractor shall submit for approval, drawings for all equipment showing proposed equipment layout, mounting, cable and conduit routing and wiring.

3.2 NEW 480 VAC SWITCHGEAR RETRO-FILL

All 480 VAC switchgear retro-fill work shall be installed as per SECTION

26 23 10.10 26 480 VOLT SWITCHGEAR RETROFILL, SECTION 26 12 16.01 26

DRY-TYPE TRANSFORMERS, SECTION 13 48 00.00 26 SEISMIC RESTRAINT FOR

MECHANICAL AND ELECTRICAL EQUIPMENT, and this section.

3.3 CONDUIT

3.3.1 General

The conduit installation shall be made in accordance with these specifications, the National Electrical Code, and as shown on the drawings and shall include all rigid and flexible conduits, boxes, and all necessary fittings. The necessary precautions shall be exercised to prevent the entrance and lodgment of grout, concrete, dirt, plaster, or trash in conduit, fittings and boxes during the course of installation. Conduit that has been crushed or deformed in any way shall not be installed. Bends and offsets in rigid conduit shall be made with a conduit bending machine for conduit 1-1/4 inch or larger. Electrical continuity of the conduit system shall be maintained. Damaged galvanized surfaces shall be repaired with galvanizing repair compound in accordance with ASTM A 780/A 780M. All installed empty conduit shall be provided with an approved nylon pull rope with tensile strength equal or greater than No. 14 AWG. Complete all mechanical work of installing conduit before installing wire. Unless otherwise indicated, raceways shall be concealed where possible within finished walls, ceilings, and floors other than slabs-on-grade. Care shall be taken to maintain electrical continuity of the conduit system to provide a safe ground path for fault currents by tightening each coupling and connection in the conduit system as tightly as possible.

SECTION 26 00 00.00 26 Page 14

3.3.2 Installation

All conduit shall be installed in such a manner as to insure against the collection of trapped condensation and all runs shall be arranged to avoid traps wherever possible. Existing embedded conduits abandoned in place shall have the conduit stub capped to prevent dirt and water entry. Each abandoned conduit shall be labeled at both ends indicating it is being abandoned and the location of the other end. Conduit, fittings, and accessories shall be installed in accordance with details shown and as specified herein.

3.3.3 Pull Wires

A pull wire shall be inserted in each empty raceway if the raceway is more than 50 feet in length and contains more than the equivalent of two 90-degree bends, or where the raceway is more than 150 feet in length. The pull wire shall be of No. 14 AWG zinc-coated steel, or of plastic having not less than 200-pound tensile strength. Not less than 10 inches of slack shall be left at each end of the pull wire.

3.3.4 Changes in Direction of Runs

Changes in direction of runs shall be made with symmetrical bends or cast-metal fittings. Field-made bends and offsets shall be made with an approved hickey or conduit-bending machine. Crushed or deformed raceways shall not be installed. Trapped raceways in damp and wet locations shall be avoided where possible. Lodgment of plaster, dirt, or trash in raceways, boxes, fittings and equipment shall be prevented during the course of construction. Clogged raceways shall be cleared of obstructions or shall be replaced.

3.3.5 Exposed Conduit

3.3.5.1 General

Exposed conduit shall be installed to avoid interference with other work.

Structural steel shall not be cut, drilled or bent to avoid interference except with written approval. Exposed conduit shall be installed to conform to the shape of the surface over which it is run and shall be installed parallel or perpendicular to walls, structural members, or intersections of vertical planes and ceilings. Supports shall be used at entrance or exit from all conduit fittings, boxes, cabinets and changes of direction of conduit. Bolts, pipe straps and all other supporting hardware for exposed conduit shall be hot dip galvanized after fabrication.

3.3.5.2 Conduit Cleaning

All new and existing conduit that will be reused shall be cleaned by the contractor before pulling wire. The contractor shall clean all conduits by pulling a clean, dry, tight fitting rag through each conduit run.

3.3.5.3 Conduit Inspection

After a conduit system is installed and cleaned, it shall be given a visual inspection and a mandrel shall be drawn through the conduit in the presence of the Contracting Officer. Should the mandrel fail to pass through the conduit, a new bend or length of conduit shall be installed at the points of obstruction.

SECTION 26 00 00.00 26 Page 15

3.3.6 Exposed Raceways

Raceways shall be installed parallel or perpendicular to walls, structural members, or intersections of vertical planes and ceilings. Exposed installations, in this paragraph, include raceways under raised floors or above accessible ceilings. Clamp-backs shall be used for mounting to concrete.

3.3.7 Supports

Conduits and the support system to which they are attached, shall be securely and rigidly fastened in place to prevent vertical and horizontal movement at intervals of not more than ten (10) feet and within three(3) feet of boxes, cabinets, and fittings, with approved pipe straps, wall brackets, conduit clamps, conduit hangers, threaded C-clamps, beam clamps, or ceiling trapeze. Supports for exposed conduit on concrete surfaces shall be fastened securely to the concrete with approved anchors. Wooden, fibrous, or similar plugs inserted into the concrete will not be accepted.

Concrete anchors shall be as per SECTION 13 48 00.00 26. Cutting the main reinforcing bars in reinforced concrete beams or joists shall not be acceptable when drilling holes for support anchors. Holes drilled for support anchors, but not used, shall be filled.

3.3.8 Expansion Fittings

Install expansion fittings at all crossings of concrete expansion joints and where necessary to compensate for thermal expansion greater than 1/4" on a straight run. Expansion fittings shall be UL Listed and shall allow up to 4 inches of movement.

3.3.9 Grounding of Conduit System

The entire metallic conduit system installed by the Contractor shall be electrically continuous and bonding jumpers shall be used across all expansion fittings and between conduits entering and leaving electrical utility vaults, panelboards, and cabinets. No welding or brazing of the grounding conductor to the conduit shall be allowed. Insulated ground bushings shall be used to bond metallic conduits. Conduits terminating at cabinets and panelboards shall be grounded at the equipment by grounding bushings connected to the grounding system by a No. 8 wire, or as approved. Conduit runs shall be grounded at both ends.

3.3.10 Coordination

The conduit shall be installed in the most direct and workmanlike manner so that interference between piping, ducts, conduit, mechanical, electrical, and structural features will be avoided. In case interference does develop, the Contracting Officer will decide which work shall be relocated regardless of which work was first installed. The rerouting shall be made without additional cost to the Government. The Contractor shall carefully examine previously installed work prior to developing layout and installation plans for conduit and accessories to determine that installation can be made without interference with other work.

3.3.11 Cutting and Threading

All cuts shall be made with a hacksaw or a cutter-type tool approved for this use. Roller type pipe cutters shall not be used on conduits. All cuts shall be square and the conduit opening shall not be constricted.

SECTION 26 00 00.00 26 Page 16

After cutting and threading, conduit ends shall be reamed to remove burrs, and the entire conduit shall be thoroughly cleaned to remove all cuttings, dirt and oil from its interior. Threads shall be clean-cut. No running threads will be permitted. Conduit unions shall be used where standard couplings cannot be used. All conduit joints shall be wrench tight. No threadless fittings shall be used on conduit runs.

3.3.12 Thread Compound

Conduit joints and connections shall be made conductive, watertight and rustproof by the application of a blend of colloidal copper and rust inhibitors. All threaded joints shall be thoroughly cleaned to remove all cutting oil before the compound is applied.

3.3.13 Bends

Bends in conduit runs shall have a radius of not less than 10 times the diameter nominal size. All bends shall be free from cracks and indentations.

3.3.14 Termination at Sheet Metal Boxes

Unless conduit hubs are provided, conduit shall be securely fastened to sheet metal boxes and cabinets with a Myer's hub and terminated with an insulated ground bushing. The conduit shall be of such length that when a bushing is screwed tight against the end of the conduit, no appreciable space will be left between bushing and locknut. The locknuts shall be tightened against the box without deforming the box.

3.3.15 Termination at Cast Boxes

Conduits terminating in cast boxes shall be made up in approved threaded hubs or bosses unless otherwise indicated. Conduit shall be corked or plugged with rags or similar packing material before the concrete is poured. Cast boxes and enclosures with threaded hubs shall be provided with proper size hubs to fit conduit being installed. Threaded reducers will not be permitted.

3.3.16 Outlet Boxes as Part of Conduit System

The Contractor shall be responsible for furnishing and installing junction and pull boxes, complete with covers, in the wiring or raceway systems wherever required for pulling of wires, making connections, and mounting of devices or fixtures. When a pull box or special fitting is required to make a short radius bend to reach an outlet box, such pull box or fitting shall be furnished as part of the conduit installation even if not so indicated on the contract drawings.

3.3.17 Mandrel Requirement

Unless otherwise waived by the Contracting Officer's Representative, All conduit, new and existing, shall have a mandrel pulled through to ensure that the conduit is clear of obstructions. The mandrel shall be properly sized for conduit being cleared.

3.4 WIREWAYS

Install the wireways level, straight, and true to line or grade within + 1/8-inch in 10 feet and within an accumulative maximum of 1/2-inch.

SECTION 26 00 00.00 26 Page 17

Vertical structures shall be plumb within a tolerance of 1/8-inch per 10 feet of length. Install hold-down clamps or fasteners at all support points. Use clamps or fasteners to secure all covers as recommended by the wireway manufacturer. Install all connectors and splices in locations recommended by the wireway manufacturer. Install all hardware so that no sharp projections will occur in the path of the cables.

3.5 BOXES AND ENCLOSURES

3.5.1 General

Boxes shall be provided in the wiring or raceway systems wherever required by NFPA 70 for pulling of wires, making connections, and mounting of devices or fixtures. Pull boxes shall be furnished with screw-fastened covers. Indicated elevations (if any) are approximate, except where minimum mounting heights for hazardous areas are required by NFPA 70.

3.5.2 Installation

All boxes shall be straight and true with horizontal or vertical structural lines. The final installation shall not be out of plumb more than 1/4-inch over the full length nor be deformed more than 1/16-inch per linear foot nor more than a total of 1/4-inch in any surface. All boxes and cabinets shall be cleaned of debris, concrete, and grout after the forms are removed and boxes with gasketed covers shall be closed immediately. Gaskets for gasketed boxes shall be treated with graphite or other approved paste at the time the cover is assembled to the box to prevent it from sticking.

Cabinet trims shall be aligned and adjusted to the building wall. Blank covers shall be installed on boxes where devices are not indicated. Open knockouts shall not be permitted. Unused conduit openings shall be plugged with an approved fitting. Exposed enclosures on concrete surfaces shall be fastened with anchors near each corner. Enclosures with threaded hubs shall be provided with proper size hubs to fit conduit being installed.

Threaded reducers will not be permitted. Concrete anchors shall be as per

SECTION 13 48 00.00 26.

3.6 WIRE AND CABLE

3.6.1 General

For the purposes of this contract, the term "internal wiring" shall be used to designate the Contractor's factory installed wiring in equipment furnished for installation, and the term "external wiring" shall be used to designate the Contractor's field installed wiring. Conduit and cable to be replaced are shown in the contract drawings, and indicate information on conduit and cable numbers, sizes and estimated lengths, number and insulation ratings of conductors, the function and operating voltage of circuits, and the terminations of conduits and cables. Although estimated cable lengths are indicated, the Contractor shall be responsible for determining the actual cable length required to make an installation of all new cables. Splicing of cable runs shall not be allowed. Reference SECTION 26 05 19.00 20, INSULATED WIRE AND CABLE and this section.

3.6.2 External Wiring

All external wire and cable shall conform to SECTION 26 05 19.00 10, INSULATED WIRE AND CABLE, of these specifications. All wire and cable shall be installed in accordance with National Electrical Code requirements and all manufacturers recommendations. All necessary materials, tools and

SECTION 26 00 00.00 26 Page 18 equipment required for proper handling and installation of wire and cable in conduits and elsewhere shall be furnished. Except for spares, each wire and cable shall be connected to the associated equipment at both ends, and shall be continuous and without splices between the equipment termination points. Wire and cable shall be pulled in a manner which will preclude damage to the conductor, insulation or jacket. Any cable damaged during installation shall be removed and replaced. Installation of wire and cable shall include installation of all supporting devices and all terminations required to complete the circuits as required. Wire and cable shall not be pulled into conduit runs until the conduit has been checked and determined to be clean and dry. Only approved lubricants may be used to facilitate pulling of conductors. Cables shall be placed straight and parallel in the trays.

3.6.3 Internal Wiring

All enclosures and devices shall be completely wired to designated terminal blocks for connection to external devices. The Contractor's standard cables and methods of cable terminations may be used for wiring and terminations performed at the factory. Any wiring extending beyond the equipment cubicles shall be terminated at 600-volt terminal blocks. Special attention shall be given to terminal wiring arrangements on the terminal blocks to permit individual conductors of each external cable to be terminated on adjacent terminal points.

3.6.4 Terminations

All cable and wire connections shall be made at terminal blocks or terminal studs with ring-tongue indented terminals. The shield and shield insulating jacket of shielded signal cables and conductors, if applicable, shall be maintained to a point as close to the terminals as possible. The shield insulating jacket shall not be stripped from the shield except where necessary to make the ground connection. All signal cable shields shall be grounded at one end only. Each connected terminal of each block shall have the circuit designation or wire number placed on the marking strip with permanent marking fluid. Terminal block wire designations shall be made with white or other light-colored plastic marking strips, fastened by screws. For each connected terminal, the manufacturer's wire number and Government's wire number shall both be shown on the marking strips with permanent marking fluid. Two marking strips shall be furnished with each block, to accommodate the two sets of wire numbers. Except for motor leads, the conductors shall be either terminated on screw or stud terminals or a separate adjacent terminal block shall be provided as indicated on the drawings. Either locking nuts or lock washers shall be used on all stud terminals. Where not otherwise indicated, phasing shall be A-B-C from left to right, from top to bottom and from front to back when facing the front of the equipment. Where control and signal cables cannot be immediately terminated at both ends, the end of each cable not terminated shall be capped or taped so that conductors are insulated from each other, the equipment, and ground until connections to the associated equipment can be made.

3.6.5 Identification

All multiple-conductor cables shall be clearly identified with the cable designation by either embossed one-inch diameter brass tags or by embossed aluminum band markers. Tags or band markers shall be securely fastened to the cables at each termination, junction or pull box, and as required at other points of access. Wires and individual conductors of control and

SECTION 26 00 00.00 26 Page 19 power cables shall be identified with non-metallic tube-type markers at each termination. Tube-type markers shall be suitable for contact with rubber or neoprene or plastic. Tubing shall be sized to fit the wire being marked and shall have black marking on a light colored background. Where individual conductors are run in cable trays, markers shall be securely fastened to the conductors every fifty feet, and shall be sized to fit the wire being marked and shall have black marking on a light colored background. Installed markers shall be uniform in position on the wire and legends shall be visible when wires are terminated on terminal blocks or equipment. Identification on each tag and marker shall include both the source and destination location as shown in the contract drawings or as directed.

3.7 GROUNDING

Grounding will conform to 26 05 26.00 26 GROUNDING

3.8 FEEDER CABLES

3.8.1 Installation

The Contractor shall provide all necessary materials and labor to arrange the feeder cables while minimizing any outage of power during the normal work days of Monday through Thursday, or as approved by the Contracting Officer's Representative. Where replacement is necessary, maintain existing feeder cables in place and operational until new cables have been installed in cable trays and tested; minimizing the outages to cutover and testing only. Any materials damaged during the installation shall be replaced to existing conditions at no cost to the government.

3.9 PAINTING

3.9.1 New Equipment

Interior and exterior steel surfaces of the housings, special boxes, cabinets, enclosures and new control panel sections shall be thoroughly cleaned and then, if not galvanized, receive a rust-inhibitive phosphatizing or equivalent treatment prior to painting. Exterior surfaces shall be free from holes, seams, dents, weld marks, loose scale or other imperfections.