26 05 00.00 26 R0003.pdf

CJD Excitation Units 1 – 16 Replacement 21050 Bridgeport, WA W912DW24R0001

SECTION TABLE OF CONTENTS

DIVISION 26 - ELECTRICAL

SECTION 26 05 00.00 26

BASIC ELECTRICAL MATERIALS AND METHODS

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 Corrosion Prevention

1.4.3.1 General

1.4.3.2 Fastenings and Fittings

1.4.3.2.1 Corrosion-Resisting Materials

1.5 DELIVERY, STORAGE, AND HANDLING

1.6 CONTRACT DRAWINGS

1.6.1 General

1.6.2 Departure From Drawings

PART 2 PRODUCTS

2.1 MATERIALS AND EQUIPMENT

2.1.1 Compliance with Standards

2.1.2 Standard Products

2.2 CONDUIT, RACEWAYS, DUCTS, FITTINGS AND HANGERS

2.2.1 Rigid Metal Conduit

2.2.2 Liquid-Tight Flexible Metal Conduit

2.2.3 Non-Metallic Wiring Duct (Channel)

2.2.4 Rigid Metallic Conduit Fittings

2.2.5 Flexible Conduit Fittings

2.2.6 Conduit Hangers

2.2.7 Wire Ways

2.3 BOXES AND ENCLOSURES

2.3.1 Receptacle Boxes and Pull Boxes

2.3.2 Enclosures

2.4 RECEPTACLES

2.5 SAFETY SWITCHES

2.6 MOLDED CASE CIRCUIT BREAKERS

2.6.1 Trip Units

2.6.2 120/240VAC Circuit Breakers

2.6.3 125VDC Circuit Breakers

2.7 CONTROL EQUIPMENT

2.7.1 Terminal Blocks

2.7.1.1 Markings

2.7.1.2 Control Signal Type

2.7.1.3 Short-Circuiting Type

2.7.1.4 Power Terminal Blocks

2.7.2 Control, Instrument, and Selector Switches

2.7.2.1 General

2.7.2.2 Control Switches

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R0003

2.7.2.3 Instrument Switches

2.7.2.4 Selector Switches

2.7.3 Relays

2.7.3.1 Control Relays

2.7.4 Indicating Lamp Assemblies

2.8 ESCUTCHEONS AND NAMEPLATES

2.9 INDICATING INSTRUMENTS

2.10 SPARE PARTS

PART 3 EXECUTION

3.1 DEMOLITION, INSTALLATION, AND RECONFIGURATION

3.1.1 Demolition

3.1.2 Installation

3.2 SEISMIC REQUIREMENTS

3.3 CONDUIT SYSTEM INSTALLATION

3.3.1 General

3.3.2 Thread Compound

3.3.3 Liquid-Tight Flexible Conduit

3.3.4 Cutting and Threading

3.3.5 Bends

3.3.6 Expansion Fittings

3.3.7 Coordination

3.3.8 Termination of Conduit

3.3.9 Grounding and Bonding of Conduit

3.3.10 Conduit Cleaning

3.3.11 Conduit Labeling

3.3.12 Conduit Inspection

3.4 SAFETY SWITCH INSTALLATION

3.5 BOX AND ENCLOSURE INSTALLATION

3.5.1 General

3.5.2 Installation

3.6 ESCUTCHEONS AND NAME PLATE INSTALLATION

3.7 PAINTING

-- End of Section Table of Contents --

SECTION 26 05 00.00 26 Page 2

SECTION 26 05 00.00 26

BASIC ELECTRICAL MATERIALS AND METHODS

PART 1 GENERAL

1.1 DESCRIPTION OF WORK

Provide miscellaneous electrical devices and materials as required and as specified for installation and operation of the sixteen new excitation systems at Chief Joseph Powerhouse. Remove and replace equipment as specified and shown in contract drawings. Conduit installed for routing of any control or power cables shall meet the requirements of this section.

1.2 REFERENCES

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

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

ASTM INTERNATIONAL (ASTM)

ASTM A1011/A1011M (2018) Standard Specification for Steel, Sheet, and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy and High-Strength Low-Alloy with Improved Formability and Ultra-High Strength

ASTM D709 (2017) Laminated Thermosetting Materials

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE C2 (2017) National Electrical Safety Code

NATIONAL ELECTRICAL CONTRACTORS ASSOCIATION (NECA)

NECA 101 (2020) Standard for Installing Steel Conduits (Rigid, IMC, EMT)

NECA/NEIS 1 (2015) Good Workmanship in Electrical Construction

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

ANSI C80.1 (2020) American National Standard for Electrical Rigid Steel Conduit (ERSC)

ANSI Z535.1 (2017) American National Standard for Safety--Color Code

NEMA 250 (2014) Enclosures for Electrical Equipment

SECTION 26 05 00.00 26 Page 3

(1000 Volts Maximum)

NEMA FB 1 (2014) Standard for Fittings, Cast Metal Boxes, and Conduit Bodies for Conduit, Electrical Metallic Tubing, and Cable

NEMA ICS 5 (2017) Industrial Control and Systems:

Control Circuit and Pilot Devices

NEMA KS 1 (2013) Enclosed and Miscellaneous Distribution Equipment Switches (600 V Maximum)

NEMA WD 6 (2016) Wiring Devices Dimensions Specifications

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2020) National Electrical Code

UNDERWRITERS LABORATORIES (UL)

UL 489 (2019) Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures

UL 50 (2015) Enclosures for Electrical Equipment, Non-environmental Considerations

UL 514A (2013) Metallic Outlet Boxes

UL 514B (2012; Reprint Nov 2014) Conduit, Tubing and Cable Fittings

UL 6 (2007; Reprint Nov 2014) Electrical Rigid Metal Conduit-Steel

UL 870 (2016) Wireways, Auxiliary Gutters, and Associated Fittings

UL 94 (2013; Reprint Jul 2015) Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances

UL 360 (2013; Reprint Jan 2015) Liquid-Tight Flexible Steel Conduit

UL 1565 (2013) Standard for Safety Positioning Devices

1.3 SUBMITTALS

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

submittals having an "I" designation are for information only. A designation following the "G" or "I" designation identifies the office that will review the submittal for the Government. The following must be submitted in accordance with SECTION 01 33 00 SUBMITTAL PROCEDURES:

SECTION 26 05 00.00 26 Page 4

SD-03 Product Data

Within 90 calendar days after Notice of Award, submit complete descriptive literature and specifications of each product or system of products listed with original, legible manufacturer's cut sheets and data sheets to clearly indicate physical construction, operation, electrical characteristics, ratings, and associated hardware, as applicable. Include manufacturer's catalog numbers and designations, and clearly cross-reference with shop drawings as appropriate. Product data submitted for approval must clearly show conformance with these specifications, including, but not being limited to, product manufacturers' declarations of conformance to applicable technical standards. Product data must be approved prior to procurement of associated materials and equipment.

Rigid Metal Conduit; G

Liquid-Tight Flexible Metal Conduit; G

Non-Metallic Wiring Duct (Channel); G

Rigid Metallic Conduit Fittings; G

Flexible Conduit Fittings; G

Conduit Hangers; G

Wire Ways; G

Receptacles; G

Safety Switches; G

Control, Instrument, and Selector Switches; G

Receptacle Boxes and Pull Boxes; G

Enclosures; G

Molded Case Circuit Breakers; G

Terminal Blocks; G

Control Relays; G

Indicating Lamp Assemblies; G

Escutcheons and Nameplates; G

Indicating Instruments; G

SD-08 Manufacturer's Instructions

Spare Parts; G

1.4 GENERAL REQUIREMENTS

1.4.1 Materials, Equipment and Installation

New materials and equipment must be furnished and any defective material

SECTION 26 05 00.00 26 Page 5 or equipment damaged in the course of installation must be replaced or repaired. Testing must be performed to check the installation of and the proper operational functions of the electrical equipment. The installations must 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 must govern. Omission of details on the drawings or in the specifications must not be construed as permitting deviations from Code requirements.

1.4.2 Standard Products

Material and equipment must be the standard products of manufacturers regularly engaged in the manufacture of these products and must essentially duplicate items that have been in satisfactory use for at least 5 years prior to proposal due date.

1.4.3 Corrosion Prevention

1.4.3.1 General

All equipment must 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. Materials used for corrosion prevention must be submitted for approval under SD-03 Product Data.

1.4.3.2 Fastenings and Fittings

Screws, bolts, nuts, pins, studs, springs, washers and other miscellaneous fastening and fittings must be of corrosion-resistant material or must be treated in an approved manner to render them resistant to corrosion. All fastenings which are to be exposed directly to the weather must be of corrosion-resisting material.

1.4.3.2.1 Corrosion-Resisting Materials

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

1.5 DELIVERY, STORAGE, AND HANDLING

Ship the equipment and/or materials as completely assembled and wired as feasible so as to require a minimum of installation work. Each shipping section is properly match marked to facilitate reassembly. Provide equipment with removable lifting channels with eye bolts for attachment of crane slings to facilitate lifting and handling. Carefully pack and ship separately any relay or other device which cannot withstand the hazards of shipment when mounted in place on the equipment. Mark these devices with the number of the panel which they are to be mounted on and fully identified. Wrap all finished painted surfaces and metal work to protect from damage during shipment. Prepare all parts for shipment so that slings for handling may be attached readily while the parts are in a railway car or transport truck. Carefully package and clearly mark all spare parts and accessories.

SECTION 26 05 00.00 26 Page 6

1.6 CONTRACT DRAWINGS

1.6.1 General

a. 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, they constitute the working drawings for construction and for purchase of required materials. The contract drawings must be superseded by manufacturer's shop drawings when available

b. Field verify all existing dimensions, details, and features relevant to requirements for equipment, apparatus, and other coordinating features required for the design, manufacture, and installation of the new equipment and accessories.

1.6.2 Departure From Drawings

If departures from the contract drawings are necessary, details of such departures and reasons for them must be submitted not later than 90 days before scheduled installation date. No such departures will be made without prior written approval. The control schemes shown on the contract drawings are not intended to exclude the Contractor's method for accomplishing the functions indicated. However, if any alternate equipment is approved, the Contractor must bear the cost and be responsible for furnishing and installing any additional wiring devices that are required.

PART 2 PRODUCTS

2.1 MATERIALS AND EQUIPMENT

2.1.1 Compliance with Standards

Equipment shall be new and meet all applicable NEMA and UL construction and rating requirements. No equivalent will be acceptable. Immediately notify the Contracting Officer of any requirements of the specifications or Contractor proposed materials or assemblies that do not comply with UL or NEMA. International Electrotechnical Commission (IEC) rated equipment will not be considered an acceptable alternative to specified NEMA ratings.

2.1.2 Standard Products

Provide materials and equipment that are products of manufacturers regularly engaged in the production of such products which are of equal material, design and workmanship, and have been in satisfactory industrial use for 5 years prior to bid opening including applications of equipment and materials under similar circumstances and of similar size.

2.2 CONDUIT, RACEWAYS, DUCTS, FITTINGS AND HANGERS

2.2.1 Rigid Metal Conduit

Rigid metal conduit, including couplings, shall conform to UL 6 and/or ANSI C80.1 and must be zinc-coated both inside and outside by hot-dip galvanizing method.

SECTION 26 05 00.00 26 Page 7

2.2.2 Liquid-Tight Flexible Metal Conduit

Liquid-tight flexible metal conduit shall be made from steel strip that is zinc-coated by the hot-dip galvanizing method with an integral or separate bonding wire or and water-proof extruded PVC cover and conforming to UL 360 .

2.2.3 Non-Metallic Wiring Duct (Channel)

Non-metallic wiring duct (channel)shall be two piece construction, halogen free with a a flame class of V-0 as specified in UL 94 and have a UL recognized for continuous use temperature of 95 degrees Celsius conforming to UL 1565 . Ducts shall have an open slotted base with solid snap-on cover.

2.2.4 Rigid Metallic Conduit Fittings

Threaded fittings for rigid conduit shall be made of solid zinc or malleable iron and listed to UL 514B and/or NEMA FB 1 . Threadless fittings shall not be used. Malleable iron fittings must be zinc-coated both inside and outside by hot-dip galvanizing method. Hubs must have a grounding screw on the locknut. Expansion fittings must have a maximum of 4 inches of travel and have external flexible copper braid bonding jumper.

2.2.5 Flexible Conduit Fittings

Flexible conduit fittings shall be made from steel or malleable iron with a zinc coating for flexible metal conduit with positive bonding, and conforming to UL 514B .

2.2.6 Conduit Hangers

Conduit hangers shall be fabricated from two or more galvanized steel hanger rods, a galvanized steel horizontal member, clamps, and other attachments as necessary for securing hanger rods and conduits. Hanger rods must not be 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. The horizontal member must be manufactured from hot rolled carbon steel with a galvanized finish conforming to ASTM A1011/A1011M . Hangers must be designed for hanging conduit. Conduit strut brackets must be made from a minimum of 12 gauge, hot rolled carbon steel with a galvanized finish conforming to ASTM A1011/A1011M .

2.2.7 Wire Ways

Metallic wire ways shall be galvanized with with knockouts. Wire ways shall have screw covers conforming to UL 870 .

2.3 BOXES AND ENCLOSURES

2.3.1 Receptacle Boxes and Pull Boxes

Provide receptacle boxes and pull boxes made of malleable iron conforming to UL 514A with threaded fittings and must be zinc-coated both inside and outside by hot-dip galvanizing method.

2.3.2 Enclosures

Provide steel NEMA Type 2 enclosures that conform to UL 50 and NEMA 250, made from a minimum of 12 Standard Gage thickness and painted Munsell NEMA

SECTION 26 05 00.00 26 Page 8

White N 9/ Sheet for enclosure interior mounting panels and Munsell ANSI Gray #61 Semi Gloss for enclosure, with provisions for locking. Piano type hinges are not acceptable for enclosure doors.

2.4 RECEPTACLES

Receptacles shall be industrial grade, NEMA 5-20R receptacles, 20A, 125 VAC, 2-pole, 3-wire duplex or NEMA 5-30R receptacles, 30A, 125 VAC, 2-pole, 3-wire duplex conforming to NEMA WD 6 as required by the contract drawings.

2.5 SAFETY SWITCHES

Safety switches shall comply with NEMA KS 1, and be the heavy-duty type.

Ensure switch construction is such that, when the switch handle in the "ON" position, the cover or door cannot be opened. Cover release device is coinproof and so constructed that an external tool is used to open the cover. Make provisions to lock the handle in the "OFF" position. Ensure the switch is not capable of being locked in the "ON" position.

Safety switches shall be of the quick-make, quick-break type and have terminal lugs for use with copper conductors.

Ensure safety color coding for identification of safety switches conforms to ANSI Z535.1 .

2.6 MOLDED CASE CIRCUIT BREAKERS

Molded case circuit breakers shall conform to the applicable requirements of UL 489 . The circuit breakers shall be manually-operated, shall be quick-make, quick-break, common trip type, and shall be of automatic-trip type unless otherwise specified or indicated on the drawings. All poles of each breaker shall be operated simultaneously by means of a common handle.

The operating handles shall clearly indicate whether the breakers are in "On," "Off," or "Tripped" position and shall have provisions for padlocking in the "Off" position. Personnel safety line terminal shields shall be provided for each breaker. The circuit breakers shall be products of only one manufacturer, and shall be interchangeable when of the same frame size. Where indicated on the drawings, circuit breakers shall be provided with shunt trip devices. Where indicated on the drawings, circuit breakers shall be provided with bell alarm contacts that close on automatic operation only. The contacts shall be suitable for 125 VDC and shall reset when the breaker is reset.

2.6.1 Trip Units

Except as otherwise noted, the circuit breakers, of frame sizes and the trip unit ratings as shown on the drawings, shall be provided with combination thermal and instantaneous magnetic or solid state trip units.

The Government reserves the right to change the indicated trip ratings, within frame limits, of the trip devices at the time the shop drawings are submitted for approval. Submit outline drawings of all equipment to be furnished under this contract, together with weights and overall dimensions for approval. The breaker trip units shall be interchangeable and the instantaneous magnetic trip units shall be adjustable on frame sizes larger than 150 amperes and shall be set at approximately 10 times

SECTION 26 05 00.00 26 Page 9 the continuous current ratings of the circuit breakers.

2.6.2 120/240VAC Circuit Breakers

Circuit breakers for 120VAC circuits shall be rated not less than 120/240 or VAC, and shall be an UL listed minimum interrupting capacity of 14,000 symmetrical amperes at 600 VAC.

2.6.3 125VDC Circuit Breakers

Circuit breakers for 125VDC circuits shall be two-pole, rated 125/250VDC or 125VDC, and shall be an UL listed minimum interrupting capacity of 42,000 symmetrical amperes at 250VDC.

2.7 CONTROL EQUIPMENT

2.7.1 Terminal Blocks

The terminal block requirements is applied to all exciter terminal blocks that interface with external cables to other equipment. Supply 10% spare terminal block spaces.

2.7.1.1 Markings

Each connected terminal must have the circuit designation or wire number marked on or near the terminal in permanent contrasting color. White or other light-colored plastic marking strips, fastened by screws to each terminal block, must be provided for control wire designations. The manufacturer's wire number and the Government's wire number must both be shown for each connected terminal on the marking strips with permanent marking fluid. The marking strips must be reversible to permit marking both sides, or two marking strips must be furnished with each block, to accommodate the two sets of wire numbers.

2.7.1.2 Control Signal Type

Provide control signal type terminal blocks of double row terminal type rated for 600 volts and 30 amps. Terminals must be plated brass with #8-32 phil-slot screws that can accept lugs with a maximum width of 0.42-inches.

2.7.1.3 Short-Circuiting Type

Provide short-circuiting type terminal blocks for all current transformer secondary leads with provisions for shorting together all leads from each current transformer without opening any circuit. Short-circuiting the terminals of only one current transformer must not short-circuit the terminals of any other current transformer.

2.7.1.4 Power Terminal Blocks

Provide power distribution blocks for branch circuits and feeders 600 volts and less, with a minimum rating of 30 amps and accommodate wire size #12 AWG and larger. Power distribution blocks must be double row type and have lugs suitable for copper conductors, must be two-pole for single-phase circuits (phase and neutral conductors, or two phase conductors), and three-pole for three-phase circuits (three phase conductors). Three-phase four-wire circuits, where used, must have a three-pole block for the phase conductors and a single-pole block for the

SECTION 26 05 00.00 26 Page 10 neutral, which must be mounted next to the block for the phase conductors.

For conductors rated more than 50 amperes, screws must have hexagonal heads. Conducting parts between connected terminals must have adequate contact surface and cross-section to operate without overheating.

2.7.2 Control, Instrument, and Selector Switches

2.7.2.1 General

Control, instrument and selector switches shall be of the rotary switchboard type with handles on the front and operating contact mechanisms on the rear of the panels, rated for alternating-current operation at 600 V, or direct-current operation at 250 V, as applicable, in accordance with the switch development specified in the contract drawings. All switches and contacts must be capable of satisfactorily withstanding a life test of at least 10,000 operations with rated current flowing in the switch contacts, and must be capable of continuously carrying 20 A without exceeding a temperature rise of more than 30 degrees C above ambient. Each switch provided must have ample contact stages including spare contacts to perform the functions of the control system.

Contacts of switches must be self-aligning and must operate with a wiping action. A positive means of maintaining high pressure on closed contacts must be provided. Compression springs or pivoted joints must not be depended upon to carry current. The covers or plates on the switches must be readily removable for inspection of contacts. Each switch must be provided with an escutcheon clearly marked to show each operating position. Switch identifications and handle positions must be engraved on escutcheons or may be provided on separate nameplates. Switches must be provided with black oval handles unless otherwise specified on the contract drawings.

2.7.2.2 Control Switches

Control switches shall be two or three-position momentary-contact type with spring return to neutral position with black pistol-grip handles or as required by the contract drawings.

2.7.2.3 Instrument Switches

Instrument switches shall be the maintained-contact type with the required number of positions. Ammeter switches must not open the secondary circuits of current transformers at any time.

2.7.2.4 Selector Switches

Selector switches shall be of the maintained-contact type, remaining in the last position until deliberately moved to another position unless shown otherwise on the contract drawings.

2.7.3 Relays

2.7.3.1 Control Relays

Provide control relays designed for panel mounting, with the capability of add-on contact blocks conforming to NEMA ICS 5 . Relays incorporating plug-in modules will not be acceptable. The contact class and rating designations must be A600 for AC control circuit contacts, and P600 for DC control circuit contacts. The Auxiliary relay salient physical, functional, or performance characteristics an equal item must meet to be

SECTION 26 05 00.00 26 Page 11 acceptable are as follows:

a. Have convertible contacts.

b. Have contacts that are double break and silver alloy.

c. Have contacts that are convertible from normally open to normally closed or vice versa.

d. Have contacts that are color coded to indicate status.

e. Are expandable from 2 poles to 12 poles.

f. Have accessories to provide pneumatic timing and mechanical latching provisions as needed.

g. Have coils that are molded construction and continuous duty rated.

h. Have transient suppressor accessory available.

i. Coil for use in 125V dc circuits must be designed to operate at 140V dc continuously.

2.7.4 Indicating Lamp Assemblies

Indicating lamp assemblies shall be of the LED switchboard type or replace in kind, rated for 125V dc and 120V ac service, with appropriate colored caps, and are tool-less to replace. The LED must be long-life LED type with a minimum normal life span of 50,000 hours. Color caps must be made of material, which will not be softened by the heat from the lamps.

Indicating lights must be visible from at least 20 ft. away. Lamps must be replaceable from the front of the panels, and any special tools required for lamp replacement must be furnished. All color caps must be similar and interchangeable, and all lamps must be of the same type and rating.

2.8 ESCUTCHEONS AND NAMEPLATES

a. Provide nameplates made from melamine plastic conforming to

ASTM D709.

b. Nameplates must be 0.125 inch thick, black with white center core.

Surface must be matte finish. Corners must be square. Accurately align lettering and engrave into the core. Minimum size of nameplates must be 1 inch by 2.5 inches. Lettering must be a minimum of 0.25 inch high, normal block style.

c. Plates must be fastened with black-finished or silver-finished, corrosion-resisting, round-head machine screws or approved nonadhesive metal fasteners.

d. Spare locations, such as spare breakers, must have blank nameplates installed, that can be engraved in the future.

2.9 INDICATING INSTRUMENTS

Electrical dial indicating instruments shall be provided for field amps and field volts mounted on the generator switchboards and on the excitation system cabinet. They shall be switchboard type LED digital and

SECTION 26 05 00.00 26 Page 12 analog combination, shall conform to the applicable requirements ANSI C39.1 , and shall have an accuracy rating within 1 percent of full-scale value. The instruments shall be back-connected semiflush mounted. Instruments shall have white dials, circular scales, black scale markings, and black tapered antiparallax pointers. Digital readout shall be 3-1/2 digit red LED. Meter inputs shall be 4-20 mA. Instrument cases shall be dust-tight with shadowproof covers and antiglare windows.

Instruments shall be 4-1/4-inch rectangular type with nominal 250-degree scale angle. Instrument scales shall be appropriate for the application.

All indicating instruments, including generator field voltage and current, which may be required for local adjustment or test, shall be provided.

2.10 SPARE PARTS

Provide the following spare parts that are duplicates of the original parts furnished and interchangeable therewith. The spare parts must be packaged for long term protection and storage according to the manufacturer's instructions. The packaging must be legibly labeled to identify the spare parts. A list of the furnished spare parts must be included in the Operation and Maintenance Manual.

a. Sixteen spare receptacles of each type and rating used.

b. Sixteen spare safety switches of each type and rating used.

c. TwentyFour spare control switches of each type and rating used.

d. Twenty spare instrument switches of each type and rating used.

e. TwentyFour spare selector switches of each type and rating used.

f. Twelve spare circuit breakers of each type and rating used.

g. Twenty spare terminal blocks of each type and rating used.

h. Twenty spare control relays of each type and rating used.

i. Twenty spare indicating lamps of each color, type and rating used.

j. TwentyFour spare indicating instruments of each type and rating used.

PART 3 EXECUTION

3.1 DEMOLITION, INSTALLATION, AND RECONFIGURATION

3.1.1 Demolition

Remove all wiring connections to the existing exciters and wiring connections as indicate in the contract drawings. Remove cables up to control room terminal blocks. Government will remove cables connections from the terminal blocks in control room to the switches.

3.1.2 Installation

Install all new wiring connection to the new excitation systems and wiring connections as indicate in the contract drawings. Install cables up to control room terminal blocks. Government will install cables connections

SECTION 26 05 00.00 26 Page 13 from the terminal blocks in control room to the switches. Provide 16 new voltage adjust switches for the Government to install.

Installation shall comply with the applicable requirements of IEEE C2 and

NFPA 70

3.2 SEISMIC REQUIREMENTS

The structural design calculations for seismic restraints and detail drawings for electrical conduit and equipment in this section must be developed by the Contractor in accordance with the requirements of Section

13 48 00.00 26, SEISMIC RESTRAINT FOR MECHANICAL AND ELECTRICAL EQUIPMENT.

3.3 CONDUIT SYSTEM INSTALLATION

3.3.1 General

a. Conduit systems must be installed in accordance with NECA/NEIS 1 and NECA 101. Pull boxes must be furnished and installed, complete with covers, in conduit runs as required by NFPA 70 and good practice in the industry.

b. Do not install conduit exhibiting damage of any kind. Avoid trapped conduit runs where possible. Take care to prevent the lodgment of foreign material in the conduit, boxes, fittings, and equipment during the course of construction. Clear any clogged conduit of obstructions or replace conduit.

c. Exposed conduit must be installed to avoid interference with other work. Structural steel must not be cut, drilled or bent to avoid interference except with written approval. Exposed conduit must be installed to conform to the shape of the surface over which it is run and must be installed parallel or perpendicular to walls, structural members, or intersections of vertical planes and ceilings. Supports must be used at entrance or exit from all conduit fittings, boxes, cabinets and changes of direction of conduit.

3.3.2 Thread Compound

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

3.3.3 Liquid-Tight Flexible Conduit

Use of liquid-tight flexible conduit must be limited to make electrical connections to vibration-isolated equipment connections and must not exceed 36-inches in length.

3.3.4 Cutting and Threading

All cuts must be made with a hacksaw and then manually reamed, or made by a powered cutting/reaming tool approved for this use. Manual roller type pipe cutters must not be used on conduits. All cuts must be square and the conduit opening must not be constricted. After threading, conduit ends must be checked and reamed to remove any additional burrs, and the entire conduit must be thoroughly cleaned to remove all cuttings, dirt and oil from its interior. Conduit threads must be tapered using National Pipe

SECTION 26 05 00.00 26 Page 14

Thread dies and be clean-cut. No running threads will be permitted.

Conduit unions must be used where standard couplings cannot be used. All conduit joints must be wrench tight. Threadless fittings shall not be used on conduit runs.

All conduit cutting and threading be performed with suitable containment for cutting oil, shavings and chips, and that no cutting or threading be allowed to take place on the generators or above any equipment or open vents, drains, or similar openings.

3.3.5 Bends

a. Ensure that conduit runs between devices do not contain more than the equivalent of three 90-degree bends, including those bends located immediately at the device.

b. Make field-made bends and offsets with approved Hickey bending tool or conduit bending machine. Use long radius conduit for elbows larger than 2-1/2 inches.

3.3.6 Expansion Fittings

Expansion fittings must be installed at all crossings of concrete expansion joints and where necessary to compensate for thermal expansion greater than 1/4-inch on a straight run. Expansion fittings must be installed in accordance with the manufacturer's instructions. Expansion fittings must be installed such that the external bonding jumpers are visible for inspection.

3.3.7 Coordination

The conduit must 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 must be relocated regardless of which work was first installed. The rerouting must be made without additional cost to the Government. The Contractor must 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.

3.3.8 Termination of Conduit

All conduit terminations to sheetmetal boxes and enclosures must be made using grounding hubs.

3.3.9 Grounding and Bonding of Conduit

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

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3.3.10 Conduit Cleaning

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

3.3.11 Conduit Labeling

All new conduit shall have metal tags that identify the conduit name, as specified in the conduit and cable schedules at each equipment and wall penetration.

3.3.12 Conduit Inspection

After a conduit system is installed and cleaned, but prior to pulling conductors, it must be given a visual inspection and a mandrel must 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 must be installed at the points of obstruction.

3.4 SAFETY SWITCH INSTALLATION

Do not mount safety switches in an inaccessible location or where the passageway to the switch may become obstructed. Operating levers, handles, or buttons must be located 60-inches above the finish floor line.

In locations where this is not possible, the Operating levers, handles, or buttons must not be higher than 79-inches above the finish floor line.

3.5 BOX AND ENCLOSURE INSTALLATION

3.5.1 General

Boxes must 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. 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 and enclosures must be straight and true with horizontal or vertical structural lines. The final installation must 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. Gaskets for gasketed boxes must be treated with graphite or other approved paste at the time the cover is assembled to the box to prevent it from sticking. Blank covers must be installed on boxes where devices are not indicated. Open knockouts must not be permitted. Unused conduit openings must be plugged with an approved fitting. Exposed enclosures on concrete surfaces must be fastened with anchors near each corner.

Enclosures with threaded hubs must be provided with proper size hubs to fit conduit being installed. Threaded reducers will not be permitted.

3.6 ESCUTCHEONS AND NAME PLATE INSTALLATION

Escutcheons and name plates must be installed as indicated in the contract drawings. Mounting screws must be flush with the back of the panel to prevent damaging wires. Escutcheons and name plates must be level, evenly spaced and aligned with its associated devices. Escutcheons and name plates must visible to the operators.

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3.7 PAINTING

Any paint damaged during modifications to existing equipment must be repaired by degreasing, sanding, feather-edging, priming, and finishing with an approved paint of matching color. Tiny nicks and other similar damage may, if approved, be repaired with matching finish color alone.

3.7.1 New Equipment

Paint new electrical equipment as required to match finish of adjacent surfaces or to the specified criteria.

3.7.2 Existing Equipment

Any paint damaged during modifications to existing equipment must be repaired by degreasing, sanding, feather-edging, priming, and finishing with an approved paint of matching color. Tiny nicks and other similar damage may, if approved, be repaired with matching finish color alone.

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