Section 16050 BASIC MATERIALS AND METHODS

Section 16050

BASIC MATERIALS AND METHODS

PART 1 - GENERAL

1.1 THE REQUIREMENT

A. The Contractor shall furnish all tools, equipment, materials, and supplies and shall perform all labor required to complete the work as indicated on the Drawings and specified herein.

B. This Section covers the work necessary to furnish and install, complete, the materials specified hereinafter.

1.2 RELATED WORK SPECIFIED ELSEWHERE

A. The requirements of the following sections and divisions applies to of this Section.

1. Section 09800

2. Section 16010

3. Division 17

4. Work Specified Under Other Divisions

a. All concrete work required for encasement, installation, or construction of the work specified in the various sections of Division 16 is included as a part of the work hereunder, and shall be 2500-psi concrete conforming to the applicable requirements of Section 03300, provided that the following exceptions and supplementary requirements shall apply:

(1) Consolidation of encasement concrete around duct banks shall be by hand puddling, and/or no mechanical vibration.

(2) A workability admixture shall be used in encasement concrete, which shall be a hydroxylated carboxylic acid type in liquid form. Admixtures containing calcium chloride shall not be used.

(3) Concrete for encasement of conduit or duct banks shall contain an integral red-oxide coloring pigment in the proportion of 8 pounds per cubic yard of concrete.

B. Materials and equipment furnished and installed under other Divisions with raceway and electrical conductors furnished, installed and connected under Division 16, Electrical.

1.3 REFERENCE SPECIFICATIONS, CODES AND STANDARDS

A. All work specified herein shall conform to or exceed the applicable requirements of the referenced portions of the following publications to the extent that the provisions thereof are not in conflict with other provisions of these specifications.

1. Codes and Standards

NEC National Fire Protection Agency (NFPA) – 70 National

Electrical Code (NEC), latest adopted version

CCR Title 8, Industrial Relations, Subchapter 5, Electrical

Safety Orders, California Code of Regulations

2. Government Standards

FS W-C-596E/GEN(1) Connector, Plug, Receptacle and Cable Outlet, Electrical

Power

FS W-S-896E/GEN(1) Switches, Toggle (Toggle and Lode), Flush Mounted

(ac)

FS WW-C-581E Conduit, Metal, Rigid, and Intermediate; and Coupling, Elbow, and Nipple, Electrical Conduit: Steel, Zinc Coated

3. Commercial Standards

ANSI B16.5 Pipe Flanges and Flanged Fittings, Steel, Nickel Alloy, and Other Special Alloys

ANSI C80.1 Specification for Rigid Steel Conduit, Zinc Coated ANSI Z55.1 Gray Finishes for Industrial Apparatus and Equipment ANSI/UL 467 Safety Standard for Grounding and Bonding Equipment NEMA WD-1-1.10 General Requirements for Wiring Devices

NEMA AB-1 Molded Case Circuit Breakers

NEMA PB-1 Panelboards

NEMA KS-1 Enclosed Switches

NEMA VE-1 Ventilated Cable Tray

ICEA S-61-402 Thermoplastic - Insulated Wire and Cable for the

Transmission and Distribution of Electrical Energy

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

UL 943 Ground Fault Circuit Interrupters

B. All equipment furnished by the Contractor shall be listed by and shall bear the label of Underwriters' Laboratories, Incorporated, (UL) or of an independent testing laboratory acceptable to the Owner.

C. The construction and installation of all electrical equipment and materials shall comply with all applicable provisions of the Cal/ OSHA Safety Orders (Title 8, CCR), State Building Standards, and applicable local codes and regulations.

1.4 CONTRACTOR SUBMITTALS

A. Submittals shall be made in accordance with the requirements of Section 16010.

1.5 QUALITY ASSURANCE

A. Quality assurance shall be in accordance with all applicable requirements of Section

16010.

PART 2 - PRODUCTS

2.1 SERVICE ENTRANCE

A. Provide labor and furnish equipment as required by the electric utility, which will provide service to the facility. All such materials and work shall meet the requirements of the utility company.

B. Provide temporary service for construction tools and testing apparatus during construction.

2.2 HAZARDOUS AREAS

A. Provide devices, materials, and equipment for installation in hazardous areas that are specifically approved for installation in hazardous areas of the Class, Division, and Group indicated, and are of construction that will ensure safe performance under conditions of proper use and maintenance. Provide devices, materials, and equipment meeting the requirements of the NEC, applicable state and local codes, and the authority enforcing these codes. Acceptable manufacturers: Crouse-Hinds, Appleton, or equal.

2.3 OUTLET AND DEVICE BOXES

A. General: Provide boxes not less than 2-inches deep, unless shallower boxes are required by structural conditions and are specifically accepted by the Engineer. Do not use box extensions to provide wiring space required by the NEC. For hollow masonry construction, provide boxes of sufficient depth so that conduit knockouts or hubs are in the masonry void space.

B. Sheet Steel (SS) Boxes: Provide zinc- or cadmium-plated boxes of the one-piece drawn type. Install 4-inch minimum octagonal boxes for ceiling outlets, except where smaller boxes are required for the particular fixture being installed. Use concrete type boxes in poured concrete slabs. Provide 4-inch by 4-inch minimum boxes with 3/4" knockouts for switches and receptacles. Provide plaster rings where required.

C. Cast Steel (CS) Boxes: Provide boxes of cast ferrous metal with gasketed, watertight, cast ferrous metal covers and 316 stainless steel screws. Provide boxes with threaded conduit hubs and cast mounting lugs where lugs are required. Use Crouse-Hinds or Appleton Type FS or FE boxes, or equal.

D. Cast Aluminum (CA) Boxes: Provide boxes of cast, copper-free aluminum with gasketed, watertight, cast copper-free aluminum covers and 316 stainless steel screws. Provide boxes with threaded conduit hubs and cast mounting lugs where lugs are required. Use Crouse-Hinds or Appleton Type boxes, or equal.

E. Nonmetallic (NM) Boxes: Provide fiberglass boxes with gasketed, watertight covers and

316 stainless steel screws. Provide boxes with conduit hubs and any required mounting lugs. Use Crouse-Hinds Stahlin or equal.

F. Provide a box suitable for the conditions encountered at each outlet in the wiring or raceway system and sized in accordance with the NEC. Use the listed types unless otherwise indicated or accepted.

G. Unless otherwise indicated on the Contract Documents, device boxes and junction boxes shall be heavy duty, 316 stainless steel and shall be compatible with the location and conduit system being used, and shall be manufactured by Crouse-Hinds, Appletion, or equal, with 316 stainless steel cover screws and with cover gaskets. Device boxes shall be “FD” type.

1. Types to be provided, PVC-coated Steel Raceway System: Locations Box Type

All Carbon steel sheet not less than No.14 gauge thick

2. Exterior Locations, with:

Exposed Raceways 316 stainless steel (NEMA 4X) Concealed Raceways 316 stainless steel (NEMA 4X) Concrete Encased Raceways 316 stainless steel (NEMA 4X) Class I, II, or III Hazardous Areas Cast steel, NEMA 7

3. Interior Dry Locations, with:

Exposed Rigid Conduit Sheet metal Concealed Raceways Sheet steel Concrete Encased Raceways Cast steel Lighting Circuits, Ceiling Portion Sheet steel

Class I, II, or III Hazardous Areas Cast steel, NEMA 7

4. Interior Wet Locations, with:

Exposed Raceways 316 stainless steel (NEMA 4X) Concealed Raceways Cast steel

Concrete Encased Raceways Cast steel

Lighting Circuits, Ceiling Portion Sheet steel

Class I, II, or III Hazardous Areas Cast steel, NEMA 7

5. Types to be Provided, Nonmetallic Raceway System: Locations Box Type

All Nonmetallic Exposed Raceways Nonmetallic Concealed Raceways Nonmetallic Concrete Encased Raceways Nonmetallic

H. Device Plates: Types to be provided:

Locations Plate Type

All Metal All Interior Metal Office Plastic

WP Designation Weatherproof

Interior (Except those designated WP) Flush Mounted Boxes Metal

Surface Mounted Cast Metal Boxes Cast metal

Surface Mounted Sheet Metal Boxes Metal

2.4 JUNCTION AND PULL BOXES

A. Utilize NEMA 4X 316 stainless steel for outdoor or wet and corrosive locations and where subscript WP is indicated at the box location on the Drawings.

B. Where outlet boxes are used as junction or pull boxes, use materials as specified under article 2.3, OUTLET AND DEVICE BOXES.

C. Where larger sheet steel boxes are required, utilize boxes of code-gauge, galvanized steel with full-access screw covers mounted with corrosion-resistant machine screws.

D. Where larger cast metal boxes are required, use neoprene gasketed, watertight boxes with hinged, cast metal full-access covers, 316 stainless steel cover hardware, and drilled and tapped conduit entrances. Use Crouse-Hinds Series W, O.Z./Gedney Series Y boxes, or equal. For below grade conduit, use Crouse-Hinds Type WJBF, O.Z./Gedney

Series YR, or equal, minimum size 8-inches by 8-inches by 6-inches. For hazardous areas, use boxes applicable for the location and hazardous atmosphere present.

E. Where larger nonmetallic boxes are required, they shall be gasketed, watertight, corrosive resistant, and have a hinged, full-access screw cover. The hinge and machine screws shall be 316 stainless steel. The box and cover shall be of high impact strength fiberglass-reinforced polyester material with stability to high heat. The boxes shall have conduit hubs and any required mounting lugs. The minimum size shall be 7-inches by

10-inches by 6-1/2-inches deep. Use Crouse-Hinds, or equal, Type NJB boxes.

F. Use concrete boxes of reinforced, cast concrete, 10-inches by 17-inches minimum inside dimensions, Brooks Products, Inc., No. 3-1/2T, Quikset W.17 Associated, or equal. Mark cast iron cover, as per OWNER standards. Boxes shall be inspected and approved by the Owner prior to site delivery.

G. Use special boxes where indicated on the Drawings.

2.5 TERMINAL JUNCTION BOXES (TJB)

A. Provide hinged-cover terminal junction boxes of the required type and size where indicated. Utilize NEMA 12 enclosures for indoor dry locations. Utilize NEMA 4X enclosures, as described under article 2.4, JUNCTION AND PULL BOXES, for outdoor or wet locations or where subscript WP is indicated at the box location on the Drawings. Utilize NEMA 7, explosion proof enclosures for hazardous locations. Provide terminal blocks with a separate connection point for each conductor entering or leaving the box. Provide 25 percent spare terminal points for future use following completion of installation. Paint interior surfaces with white enamel or lacquer.

2.6 TELEPHONE TERMINAL CABINETS

A. Provide telephone terminal cabinets of the type and size indicated for incoming telephone service. Provide hinged doors code-gauge galvanized steel box containing a 3/4-inch plywood backboard. Utilize cabinet conforming to the requirements of the Telephone Company. Provide terminal blocks with 25 percent spare termination points for future use following completion of installation. Label and identify all conductors.

2.7 WIRING DEVICES A. Switches

1. General Use Switches: Provide specification grade, totally-enclosed, ac type, quiet tumbler switches meeting NEMA WD 1 performance standards and Federal Specification W-S-896E, and capable of control of 100 percent tungsten filament and fluorescent lamp loads. Use switches rated at 20 amps, 120/277 volts. Provide operating handles colored ivory in office areas, and brown in all other areas. Switches shall have screw terminals.

2. Weatherproof Switches: Use switches mounted in a cast metal box with gasketed, weatherproof device plate.

3. Switches with Pilot Lights: Provide switches with 125-volt, neon light with red jewel, or lighted toggle which is lighted when the switch is ON.

4. Acceptable Manufacturers: Bryant, General Electric, Hubbell, Pass and

Seymour, or equal. B. Receptacles

1. Single and Duplex: Provide specification grade receptacles meeting NEMA WD 1 performance standards and Federal Specification W-C-596, and having a contact arrangement such that contact is made on two sides of each inserted blade without detent. Use two-pole, three-wire grounding type receptacles rated 20 amps, 125 volts, NEMA Configuration 5-20R, and with screw type wire terminals suitable for No. 10 AWG. Provide high strength thermoplastic bases colored ivory in office areas, and brown in all other areas. Acceptable manufacturers: Bryant, General Electric, Hubbell, Pass and Seymour, Sierra, or equal.

2. Weatherproof Receptacles: Receptacles shall be specified above mounted in a cast metal box with gasketed, weatherproof device plate as specified below.

3. Generator Receptacle: Generator receptacles shall be 200 Amp, 480 V AC, 3 phase generator plug compatible with Owner portable generator plugs. The generator receptacle shall be Crouse-Hinds AP20458 Arktite Heavy Duty Circuit Breaking Receptacle, or approved equal.

4. Ground Fault Interrupter (GFI) Receptacles: Provide duplex specification grade GFI receptacles tripping at 5 milliamps; rated 20 amps, 120 volts, NEMA Configuration 5-20R; and capable of interrupting 1,000 amps without damage. Use units meeting NEMA WD 1, fitting standard sized outlet boxes, having No.

12 AWG copper TW insulated pigtails, having provision for testing, and ivory in color. Use standard model where ground fault protection is needed at an individual location. Use feed-thru model where ground fault protection is

specified for "downstream" conventional receptacles. Provide receptacles

accepting standard device plates. Acceptable manufacturers: Pass and

Seymour, Square D, General Electric, or equal.

5. Special Purpose Receptacles: Provide receptacles of the type, rating, and number of poles indicated or required for the anticipated purpose. Furnish a matching plug with cord-grip features for each special purpose receptacle.

6. Receptacles in Classified Areas: Receptacles located in classified areas shall comply with the requirements of NEC Article 500.

C. Multioutlet Surface Raceway System: Provide Plugmold 2000, Walker Duct 2GW, or equal, with three-wire grounding receptacles on indicated inch centers. Provide an insulated grounding conductor to each receptacle. Wherever a two-circuit, three-wire supply to a multioutlet system is indicated, wire alternate outlets to each circuit and make receptacle color alternate ivory black. Utilize gray raceway with ivory receptacles.

D. Telephone Outlets: Provide empty outlet boxes and cover plates conforming to the requirements of the telephone company where telephone outlets are indicated.

E. Device Plates

1. General

a. Provide plates fitting closely and tightly to the box on which they are to be installed. On surface mounted boxes, provide plates, which do not extend beyond the sides of the box unless the plates do not have sharp corners or edges.

b. Use plate material compatible with the box material such that galvanic corrosion of the plate and/or box does not occur.

2. Plastic (P) Plates: Provide specification grade device plates manufactured of

0.10-inch minimum thickness, noncombustible, thermosetting material. Provide ivory one-piece with smooth exterior faces and with oval-head metal mounting screws of a color matching that of the plate.

3. Metal (M) Plates: Provide specification grade, one-piece, 0.040-inch nominal minimal thickness, No. 430 satin finish 316 stainless steel device plates with oval-head, matching mounting screws.

4. Engraved Plates: Where device titles are indicated, provide device plates engraved with the designated titles. Provide engraved letters, numbers, or characters 3/16 -inch high with filler of black color.

5. Cast Metal (CM) Plates: Provide cast metal device plates of malleable ferrous metal or copper-free aluminum with gaskets and 316 stainless steel screws with oval heads.

6. Weatherproof (WP) Plates

a. Where weatherproof receptacles are designated, the receptacle shall be installed in the specified box with a gasketed, weatherproof, cast metal or 316 stainless steel cover plate with individual cap over each receptacle opening and 316 stainless steel mounting screws. Utilize plates with caps held tightly closed with 316 stainless steel springs when receptacle is not in use. Acceptable manufacturers: General Electric, Bryant, Hubbell, Sierra, Pass and Seymour, Crouse-Hinds, Bell, or equal.

b. Where weatherproof switches are designated, the switch shall be installed in the specified box with a gasketed, weatherproof, cast metal cover plate incorporating an external operator for the internal switch and with 316 stainless steel mounting screws. Acceptable manufacturers and types: Crouse-Hinds DS-181 or DS-185, Appleton FSK-1VTS or FSK-1VS, or equal.

7. Raised Sheet Metal (SM) Plates: Provide 1/2-inch high zinc or cadmium-plated steel device plates designed for one-piece drawn type sheet steel boxes.

2.8 LIGHTING AND POWER DISTRIBUTION PANELBOARDS

A. General: Provide circuit breaker panelboards including those in motor control center meeting standards established by UL, NEMA PB 1, and the NEC. Where used as service entrance equipment, provide panels UL labeled for that use. Furnish panels with fully rated short circuit current equipment rating. Series connected equipment ratings are not acceptable. Provide panels rated for connection to an electric system having an available amperes rms symmetrical short circuit current of the indicated value at 120/240 volts. Provide panelboards and circuit breakers suitable for use with 75 degrees C wire at full NEC 75 degrees C ampacity.

B. Cabinets: Furnish boxes large enough to provide a minimum wiring gutter space on both sides and top and bottom of 4-inches by 4-inches minimum. Provide flush or surface mounted boxes as indicated manufactured with reinforced steel frame and code-gauge, hot-dip galvanized sheet steel. Utilize front trim the same size as the box for surface mounted panelboards and 3/4-inch larger all around than the box for flush mounted panelboards. Panel covers shall be installed with direct screw connections. Adjustable clamps shall not be used. Utilize fronts having doors with concealed hinges and flush type lock and catch device. Provide multi-point locking devices for all doors over 30- inches in height. Key all locks alike, and furnish two milled type keys with each lock. Furnish on door interior a metal directory frame with transparent plastic face and enclosed directory card. Furnish an engraved, laminated plastic nameplate screwed (no adhesives) to the cabinet exterior face indicating the panelboard designation, service voltage, and phases. Nameplates shall be white, engraved to a black core. Letter height shall be 1/4 inch.

C. Interiors

1. Furnished factory assembled panelboard interiors complete with circuit breakers as shown. In addition, space for future circuit breakers shall be provided with easily removable front cover. Utilize panelboards with interiors designed so that circuit breakers can be replaced without disturbing adjacent circuit breakers or without removing the main bus.

2. Provide copper bus bars full sized throughout their length. Make complete provisions for mounting future circuit breakers throughout the full length of the bus. Provide all machining, drilling, or tapping required to add or change circuit breakers in the future. Bolt together and rigidly support bus bars and connection straps on molded insulators.

3. Furnish an insulated neutral bus bar rated the same as the phase bus bars and having at least one terminal screw for each branch circuit. Furnish a copper ground bus bar installed on the panelboard frame, bonded to the box, and containing at least one terminal screw for each circuit. Provide solderless main lugs for main, neutral, and ground bus bars. Provide sub-feed or thru-feed lugs where indicated. Provide lugs and connection points on phase, neutral, and ground buses suitable for copper conductors.

D. Circuit Breakers

1. Furnish indicating type molded circuit breakers providing ON/OFF and TRIPPED positions of the operating handle. Furnish thermal magnetic, quick-make, quick- break circuit breakers which are noninterchangeable in accordance with the NEC. Do not use tandem or dual circuit breakers in normal single-pole spaces.

Do not use single-pole circuit breakers with handle ties where multiple circuit breakers are indicated. Utilize multipole circuit breakers designed so that an overload on one pole automatically causes all poles to open. Provide circuit breakers meeting requirements of NEMA AB 1. Install bolt-on circuit breakers in all panelboards. Provide circuit breaker handle padlocking provisions where indicated or required.

2. Where ground fault interrupter (GFI) circuit breakers are indicated or required by the NEC, provide a unit containing a conventional thermal magnetic trip and a ground fault sensor rated to trip the circuit breaker in approximately 0.025 second for a 5-milliampere ground fault (UL Class A sensitivity). Utilize a ground fault sensor having the same rating as the circuit breaker and having a push-to-test button.

E. Acceptable Manufacturers: Bryant, Cutler-Hammer, General Electric, Gould I-T-E, Square D, Westinghouse, or equal.

2.9 CIRCUIT BREAKERS, INDIVIDUAL, 600 VOLTS AND LESS

A. Mount individual circuit breakers in NEMA 12, industrial use enclosure unless otherwise indicated. Provide NEMA 4X, 316 stainless steel raintight enclosures for circuit breakers mounted outdoors and wherever the subscript WP is indicated on the Drawings. Provide circuit breakers with handles that can be locked in the OFF position. Interlock enclosure and circuit breaker to prevent opening the cover with the circuit breaker in the ON position. Provide quick-make, quick-break, thermal magnetic circuit breakers of the indicating type showing ON/OFF and TRIPPED positions of the operating handle. Do not use single-pole circuit breakers with handle ties where multipole circuit breakers are indicated. Utilize multipole circuit breakers designed so that an overload on one pole automatically causes all poles to open. Provide circuit breakers meeting the requirements of NEMA AB 1 and having a minimum interrupting rating as indicated. Where used as service entrance equipment, provide units labeled for that use. Provide circuit breakers suitable for use with 75 degrees C wire at full NEC 75 degrees C ampacity.

2.10 FUSED SWITCHES, INDIVIDUAL, 600 VOLTS AND LESS

A. Mount individual fused switches in NEMA 12, industrial use enclosures unless otherwise indicated. Provide NEMA 4X, 316 stainless steel raintight enclosures for fused switches mounted outdoors and wherever the subscript WP is indicated on the Drawings. Provide fused switches that can be locked in the OFF position. Interlock enclosure and switch to prevent opening the cover with the switch in the ON position. Provide fused switches, which are quick-make, quick-break, motor rated, load-break, heavy-duty (HD) type having external marking clearly indicating ON and OFF positions. Provide fuses of the current ratings indicated and types specified herein. Utilize fuse mountings that reject Class H fuses and will accept only the current-limiting fuses specified. Provide fused switches meeting the requirements of NEMA KS 1 and UL listed for application to a system having an available short circuit current as indicated. Provide switches suitable for use with

75 degrees C wire at full NEC 75 degrees C ampacity.

2.11 NONFUSED SWITCHES, INDIVIDUAL, 600 VOLTS AND LESS

A. Mount individual switches in NEMA 12, industrial use enclosure unless otherwise indicated. Provide NEMA 4X, 316 stainless steel raintight enclosure for switches mounted outdoors and wherever the subscript WP is indicated on the Drawings. Provide switches that can be locked in the OFF position. Interlock enclosure and switches to prevent opening the cover with the switch in the ON position. Provide switches, which are quick-make, quick-break, motor rated, load-break, heavy-duty (HD) type having external marking clearly indicating ON and OFF positions. Furnish switches meeting the requirements of NEMA KS 1. Provide switches [with terminals] suitable for use with

75 degrees C wire at full NEC 75 degrees C ampacity.

2.12 FUSES, 600 VOLTS AND LESS

A. Provide a complete set of current-limiting fuses wherever fuses are indicated. Provide listing quantities each type and each current rating installed. Utilize fuses that fit mountings specified with switches and which provide features rejecting Class H fuses. Provide the following types:

1. For motor and transformer circuits, 600 volts and less, 0 to 600 amps, UL Class

RK-1 with time delay, Bussmann Type LPS-RK, Shawmut Type A6D-R, or equal.

2. For motor and transformer circuits, 250 volts and less, 0 to 600 amps, UL Class

RK-1 with time delay, Bussmann Type LPN-RK, Shawmut Type A2D-R, or equal.

3. For feeder and service circuits, 600 volts and less, 0 to 600 amps, UL Class RK-

1, Bussmann Type KTS-R, Shawmut Type A6K-R, or equal.

4. For feeder and service circuits, 250 volts and less, 0 to 600 amps, UL Class RK-

1, Bussmann Type KTN-R, Shawmut Type A2K-R, or equal.

5. For feeder and service circuits, 600 volts and less, 601 to 6,000 amps, UL Class

L, Bussmann Type KRP-C, Shawmut Type A4BY, or equal.

2.13 PUSHBUTTONS, INDICATING LIGHTS, AND SELECTOR SWITCHES

A. For nonhazardous, indoor, dry locations, including motor control centers, control panels, and individual stations, provide heavy-duty, oil tight type pushbuttons, indicating lights, selector switches, and stations for these devices. Utilize General Electric Type CR 104P, or equivalent by Square D, Cutler-Hammer, or other acceptable manufacturer.

B. For nonhazardous, outdoor, or normally wet locations, or where otherwise indicated, provide heavy-duty corrosion-resistant, watertight type pushbuttons, indicating lights, or selector switches mounted in NEMA 4X 316 stainless steel watertight enclosures. Provide special gasketing required to make complete station watertight. Utilize Square D Type SK, or equivalent by General Electric, Cutler-Hammer, or other manufacturers.

C. Provide devices meeting the requirements of NEMA ICS 2, and having individual, extra large nameplates indicating their specific function. Provide pushbutton stations with laminated plastic nameplates indicating the drive they control. Provide contacts with NEMA designation rating A600. Install provisions for locking pushbuttons and selector switches in the OFF position wherever lockout provisions are indicated.

D. For hazardous locations, enclosures for push buttons, indicating lights and selector switches shall be approved for classified areas and shall be in compliance with NEC Article 500.

E. Utilize selector switches having standard operating levers. Make all indicating lights push- to-test type. Provide ON or START pushbuttons colored black. Provide OFF or STOP pushbuttons colored red.

F. Control Stations. Pushbuttons, selector switches and pilot lights shall be heavy duty, oil tight/watertight devices installed in NEMA 4X enclosures, NEMA and MCCs and control panels. These devices shall be as manufactured by Allen-Bradley, Square D Company. General Electric or equal. “START-LOCKOUT-STOP” pushbutton stations shall be Class

1 Division 1 installed adjacent to each motor unless specifically indicated otherwise on the Contract Documents.

G. Emergency stop pushbuttons shall have a large, red mushroom head, maintained contacts, push-to-stop, pull-to-rest, Allen-Bradley Bulletin 800T or equal.

H. Provide low voltage gold plated contact blocks for all analog signals.

I. Indicating lights shall be 120V LED lamps, push-to-test type, and shall be heavy-duty, oil tight (NEMA 13) for indoor enclosures and corrosion resistant, and water tight (NEMA 4X) for outdoor enclosures with LED lamp. Each LED lamp shall be nickel-plated with a screwed-on glass prismatic lens approximately one-inch in diameter. Indicating lights shall be colored LED or white LED with colored lens. Each light shall have a factory- engraved nameplate, as shown on the Contract Drawings. Indicating lights shall be General Electric Type CR104, Square D Class 9001 Type SK and K, Allen-Bradley 800T and 800H series, or equal.

J. Provide 600-volts terminal blocks for termination of all control circuits entering or leaving equipment, panels, or boxes. Provide screw clamp compression, dead front barrier type terminal blocks with current bar providing direct contact with wire between the compression screw and yoke. Provide yoke, current bar, and clamping screw constructed of high strength and high conductivity metal. Utilize yoke that guides all strands of wire into the terminal. Utilize current bar providing dependable vibration-proof connection. Supply terminals constructed to allow connection of wire without any special preparation other than stripping. Rail mount individual terminals to create a complete assembly and provide terminals constructed such that jumpers can be installed with no loss of space on terminal or rail.

K. Size all terminal block components to allow insertion of all necessary wire sizes and types. Supply terminal blocks with marking system allowing the use of preprinted or field- marked tags. Supply CSA certified and UL approved terminal blocks manufactured by Weidmuller, Ideal, Electrovert, or equal. Provide terminal blocks with 25 percent spare termination points for OWNERS use following completion of installation.

2.14 CONTROL RELAYS

A. Provide magnetic control relays, NEMA Class A600 (600 volts, 10 amps continuous,

7,200VA make, 720VA break), industrial control type with field convertible contacts, and meeting the requirements of NEMA ICS 2. Provide Cutler-Hammer Type M-600, General Electric Type CR120B, or equal.

B. Where time delay relays are specified or required, unless otherwise noted, provide magnetic control relays with a timer attachment adjustable over the range specified on the Drawings.

C. Where latching (mechanically held) relays or motor thermal detector relays are specified, provide magnetic control relays with mechanical latch attachment with unlatching coil and coil clearing contacts. Utilize an attachment allowing easy manual latching and unlatching.

D. Control relays shall be industrial type, 600 V, with 10 A contacts and contact arrangement and operating coils of the proper voltage rating as required by the control circuit sequence and the Contract Documents. Each relay shall have a minimum of four reversible-pole contacts. The coils shall be sealed by pressure molding. The relays shall be as manufactured by Allen-Bradley, Square D Company, General Electric, or equal.

E. Intrinsically safe relays shall allow the use of any type of remote pilot device located in Class 1 (hazardous) locations by providing a pilot circuit incapable of releasing sufficient electrical energy to ignite gases or vapors classified in Groups A, B, C and D. The units shall have an output relay with double pole, double throw (DPDT) contacts rated at least

16 A at 120 VAC and 24 VDC, resistive load. They shall operate on the AC supply voltage indicated on the Contract Documents. The intrinsically safe relays shall be Cutler-Hammer BW Series or equal.

F. Control relays for the level signal shall have gold plated contacts as manufactured by

Allen Bradley, Phoenix Contact or equal. Ice Cube Control Relays shall be industrial type,

120 VAC or 24 VDC, with 5 A

G. Ice Cube Control Relays shall be industrial type, 120 VAC or 24 VDC, with 5 A contact arrangement and operating coils of the proper voltage rating as required by the control circuit sequence and the Contract Documents. Each relay shall have a minimum of four reversible-pole contacts. The coils shall be sealed by pressure molding. The relays shall be as manufactured by Allen-Bradley 700HC, Square D Company, General Electric, or equal.

2.15 RESET TIMERS

A. Timers that require pins or other removable trip devices shall be provided with at least one pin or trip device for each possible time setting.

1. Reset timers and repeat cycle timers shall be heavy duty, industrial-type timers as manufactured by Eagle, Paragon, or equal.

2. Twenty-four hour timers shall be heavy duty, industrial-type timers as manufactured by Paragon, Tork, or equal.

B. Timing relays shall be Automatic Timing and Controls (ATC) Type 328A or equal.

2.16 ELECTRONIC TIMERS

A. Electronic timers shall be provided where required.

2.17 MAGNETIC CONTACTORS

A. Provide contactors of the NEMA sizes indicated. Mount contactors in NEMA 12, dust- tight, drip-tight, industrial use enclosures unless otherwise indicated. Utilize contactors manufactured and rated in accordance with NEMA ICS 2.

2.18 PENETRATION SEALING SYSTEMS

A. All penetration sealing systems shall be per manufacturer’s requirements.

2.19 ENCLOSURE PAINT AND FINISH

A. All metallic enclosures shall be finished with a prime coat of rust inhibitor and painted as per ANSI No. 61 or as per the Engineer's instructions.

2.20 DRY TYPE SMALL POWER TRANSFORMERS (600-VOLTS AND LESS PRIMARY)

A. Provide self-cooled, two-winding, dry type transformers of the ratings indicated and built in accordance with the latest IEEE, ANSI, and NEMA standards. Utilize units with manufacturer's standard insulation class and standard temperature rise. For ratings 3 to

25 kVA single-phase and 3 to 15 kVA 3-phase, provide units with core and coils completely enclosed in a nonventilated, NEMA 12 enclosure. Utilize encapsulated windings on single-phase units 0 to 25 kVA. On all transformers 15 kVA and larger provide units with at least four, 2-1/2 percent, full capacity voltage taps; two above and two below normal voltage rating.

B. Supply units where sound levels determined by tests in accordance with NEMA and ANSI

standards do not exceed: 45 decibels.

C. Acceptable Manufacturers: General Electric, Square D, Westinghouse, or equal.

2.21 LOW VOLTAGE SURGE PROTECTIVE EQUIPMENT

A. Provide secondary surge protective equipment consisting of a surge capacitor and surge arrestor combination located where indicated on the Drawings. Utilize components for all surge protective equipment covered by this Specification, designed and tested in accordance with NEMA LA-1 and ANSI/IEEE C62.1. Low voltage surge protection shall be obtained from the Motor Control Center manufacturer.

2.22 ENCLOSURE PAINT AND FINISH

A. All metallic enclosures shall be finished with a prime coat of rust inhibitor and painted as per

ANSI No. 61 or as per the Engineer's instructions.

2.23 AUTOMATIC TRANSFER SWITCH

A. Provide 1200 amp and 600 amp, 3 pole, U.L. 1008 listed open transition automatic transfer switches with close and withstand rating the same as the service meter panel rating and not less than 65,000 RMS symmetrical amperes. Rating shall be obtained without contact welding. The close and withstand rating shall be verified by UL witnessed test on representative test samples and shall be the rating in UL listing procedures for the transfer switches supplied.

B. 600 volt class, contactor type, over-center mechanism, double-throw construction, positive electrically and mechanically interlocked to prevent simultaneous closing, and mechanically held in both normal and emergency positions. Transfer switch using interlocked circuit breakers or molded case switches is not acceptable.

C. Automatic transfer switch shall be capable of full load manual transfer in either direction.

Provide insulated manual operating handle. The manual handle shall be permanently attached. Provide means to verify that switch is not inadvertently left in manual position.

D. Contacts shall be high-pressure, silver alloy with separate arcing contacts. Arc chutes shall be made of heat absorbing material and include metal leaves and arc chutes insulating covers.

E. Neutral contact shall be of the same design and have the same steady state, withstand and closing ratings as phase contacts. Neutral and phase contacts shall be mounted on a common crossbar arranged for simultaneous switching.

F. Provide fully rated copper lugs for normal, emergency, load and neutral conductors inside cabinet. Provide lugs to match the quantity and size of the installed conductors. Power switching contacts and cable connections shall have transparent protective covers for protection and visual inspection. Provide copper lug for generator grounding.

G. Provide electronic controls, front accessible, mounted inside the cabinet door. All adjustable voltage sensors and time delays shall be solid state. Provide control disconnect plugs to de-energize control circuits for service and testing. Controls shall meet IEEE-587-1980 requirements for surge withstand.

H. Utility voltage sensors shall be close differential type that monitor each phase individually.

Voltage averaging is not acceptable. Monitors shall be temperature compensated; pick- up shall be adjustable from 85% to 98% of nominal voltage, set at 90%; dropout shall be adjustable from 75% to 98% of pick-up, set at 85%.

I. Generator voltage sensors shall be close differential type that monitor each phase individually; Frequency sensors shall monitor emergency source with pick-up set at 95% of nominal frequency.

J. Operating power for transfer and retransfer shall be obtained from the source to which the load is being transferred. Maximum transfer time in either direction shall be six (6) cycles, unless otherwise specified.

K. Provide the following time delays and components:

1. Start delay 0 to 5 seconds set at 2.

2. Transfer to emergency delay set at 0.

3. Retransfer to normal delay 0 to 30 minutes set at 10.

4. Retransfer delay bypass, key operated.

5. Unloaded running delay, 0 to 10 minutes set at 5.

6. Delay transition, both directions, isolating load from both sources, 0.5 -

7.5 seconds, set at 1 second.

7. Test switch, key operated with and without transfer.

8. Four pilot lights on door showing ATS position and source available.

9. Engine start contacts wired to terminal block.

10. Contacts indicating ”normal power on” wired to terminal block.

11. Contacts indicating “normal power fail” wired to terminal block.

12. Contacts indicating “generator running” wired to terminal block.

13. Electronic exerciser 7 day, load/no load transfer.

L. Controls shall automatically retransfer the load from emergency source to normal source if emergency source fails and normal source is available.

M. Transfer switch shall be ASCO 4000 series, Zenith ZTS, or equal.

PART 3 - EXECUTION

3.1 OUTLET AND DEVICE BOXES A. Installation

1. Mount boxes at the following heights unless otherwise required by the Americans with Disabilities Act (heights are to the centerline of the box):

a. Wall Switches: 48-inches above floor b. Thermostats: 48-inches above floor

c. Wall Telephone Outlets: 48-inches above floor

d. Wall Mounted Telephone: 52-inches above floor outlets for public pay telephone, 52-inches above floor for standard wall telephone

e. Office, Lab Receptacles: Flush device plate bottom or side with top of the splashback on use areas, halls, etc. or 6-inches above counter tops without splashback; 12-inches above floor unless otherwise indicated.

2. Where above heights do not suit the building construction or finish, locate boxes where directed by the Engineer.

3. Locations indicated are approximate.

a. Mount All Boxes Plumb and Level: Use flush mounted boxes with concealed conduits. Make edges of boxes flush with finished surface. Provide proper type extension rings or plaster covers for this purpose. For flush mounted boxes, make holes in the surrounding surface no larger than required to receive the box.

b. Install boxes in a secure, substantial manner supported independently of conduit by attachment to the building structure or a structural member. Fasten boxes with bolts and expansion shields on concrete or brick, toggle bolts on hollow masonry units, and machine screws or welded, threaded studs on steelwork. No power actuated tools are permissible. Threaded studs driven in by a powder charge and provided with lock washers and nuts are acceptable in lieu of expansion shields. Boxes embedded in concrete or masonry need not be additionally supported. Utilize galvanized mounting hardware in industrial areas.

4. Open no more knockouts in sheet steel boxes than are actually required. Seal any used openings in any type box.

3.2 JUNCTION AND PULL BOXES

A. Where indicated on the Drawings, and where necessary to terminate, tap-off, or redirect multiple conduit runs, provide and install appropriately designed junction boxes. Furnish and install pull boxes where necessary in the raceway system to facilitate conductor installation. Provide pull boxes to limit conduit runs to less than 150-feet and to contain no more than the equivalent of three right-angle bends unless accepted by the Engineer.

1. Types to be provided:

a. Use boxes of the types listed for specific locations under article 2.3, OUTLET AND DEVICE BOXES.

b. Use outlet boxes as junction boxes and pull boxes wherever possible and allowed by applicable codes.

c. Provide boxes as indicated for below grade conduit. Provide 316 stainless steel (NEMA 4X) or watertight, nonmetallic boxes as indicated for above grade locations.

2. Installation

a. Make All Boxes Accessible: Do not install boxes in finished areas unless accepted by the Engineer. Mount all boxes plumb and level. Use flush mounted boxes with concealed conduits. Make edges of recessed boxes flush with the final surface.

b. Mount boxes in a secure, substantial manner, supported independently of conduit by attachment to the building structure or a structural member. Fasten boxes with bolts and expansion shields on concrete or brick, toggle bolts on hollow masonry units, and machine screws or welded threaded studs on steelwork. Threaded studs provided with lock washers and nuts as provided with Redhead or Hilti Kwik-bolt concrete anchors, Hilti HIT adhesive anchors may be used for bolt sizes 3/8" and smaller are acceptable in lieu of expansion shields. Boxes embedded in concrete or masonry need not be additionally supported. No Powder- charged tools are allowed. Utilize 316 stainless steel mounting hardware in industrial areas.

c. Install boxes for conduits under grade flush with finished grade in locations outside of paved areas, roadways, or walkways.

d. If adjacent structure is available, the box may be mounted on the structure surface just above finished grade in accessible but unobtrusive location. If it is found desirable to locate boxes in paved areas, roadways, or walkways, obtain Engineer's written approval and utilize boxes and covers suitable for the weights to which they may be subjected.

3.3 TERMINAL JUNCTION BOXES (TJB)

A. Install in accordance with all the requirements detailed under article 3.2, JUNCTION AND PULL BOXES above. Label each block and terminal with a permanently attached, nondestructible tag.

3.4 WIRING DEVICES

A. Switches: Mount switches at the heights indicated under article 3.1, OUTLET AND DEVICE BOXES. Mount switches for switch operation in the vertical position.

B. Receptacles: Mount receptacles at heights indicated under article 3.1, OUTLET AND DEVICE BOXES. Mount receptacles with grounding slot up Ground receptacles to boxes with grounding wire, not by yoke or screw contact. Mount weatherproof receptacles with the hinge for the protective cover above (not at side, or below) the receptacle opening.

C. Telephone Outlets: Mount outlets at the heights indicated under article 3.1, OUTLET AND DEVICE BOXES. Mount outlets in the vertical position unless otherwise indicated.

END OF SECTION