Section 4185. Highway Lighting Materials.

4185.01 DESCRIPTION.
Materials for highway lighting shall be of the size and type specified.

When more than one unit of any item is required for installation, all units furnished shall be the same make and design. All apparatus and materials shall be new products of manufacturers regularly engaged in production of items of this type, shall be of the manufacturer's latest approved design, shall carry the UL seal of approval, if listed, and shall be recommended by the manufacturer for the use intended.

4185.02 POLES AND SUPPORTS.
Poles shall be steel, aluminum, or wood and the size and type specified.

Each metal pole shall consist of a tapered round shaft, complete with a base, removable pole top, nameplate, or other identification and appurtenant supporting devices. The nameplate shall include manufacturer's name, type, height, and shop order number. Each lighting pole shall include provisions for supporting the luminaire or luminaires.

Dimensions and other details will be shown in the contract documents. The Contractor shall furnish poles and mast arms meeting the mounting height and mast arm length shown on the contract documents. The structural design of the light pole shall be based on the AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals.

The assembled lighting unit, consisting of the pole and all attachments including mastarms, luminaires, and breakaway base or slip base, as specified, complete and in place on the footing anchor bolts, shall withstand windloading equal to a wind of 80 mph (130 km/h) without fracture or apparent deformation of any component. Poles shall be furnished in one section. Each standard shall be designed for a luminaire dead load of 75 pounds (35 kg) and a projected area of 1.5 square feet (0.10 m2), except that in the case of twin mast arms these figures shall apply to each mast arm.

Castings incidental to poles shall be smooth and clean, with all details well defined and true to pattern.

The pole base shall telescope the pole shaft and shall be attached to the pole shaft by two welds (top and bottom) subject to approval of the Engineer. Bases for poles, other than slip base poles, shall have four anchor bolt holes located 90 degrees apart on the bolt circle. A pole with slip base shall have three anchor bolt holes located 120 degrees apart on the bolt circle, oriented as shown on the plans. For poles with mastarms, the centers of two adjacent anchor bolt holes shall be on a line parallel with the neutral plane of the pole shaft with respect to one mastarm, designated as the standard mastarm.

The Contractor shall obtain a template from the manufacturer for placement of anchor bolts.

Metal ornamental covers for the upper ends of the anchor or attachment bolts for breakaway base poles shall be furnished with the pole.

A wiring handhole, not less than 4 inches by 6 inches (100 mm by 150 mm), with a weatherproof metal cover, shall be provided for all metal poles not mounted on transformer bases, or elsewhere as shown in the contract documents. The handhole shall be centered on a point not less than 14 inches (350 mm) nor more than 18 inches (450 mm) above the bottom surface of the pole base mounting flange, and 90 degrees clockwise from the center line of the standard mastarm, as viewed from above. The pole shaft shall have a J-hook at the top for supporting cables.

Each pole shall have an approved grounding lug. When a handhole is furnished, the grounding lug shall be readily accessible through the handhole. Grounding lugs for breakaway base poles shall be accessible from the bottom of the pole shaft.

A. Anchor Bolt and Slip-Base Plate Fasteners for Lighting Poles.
All bolts, nuts, and washers for pole attachment and anchoring shall be furnished in accordance with details in the contract documents. The assembled fastener shall be capable of withstanding the forces corresponding to a moment that will cause failure of the pole, transformer base, or other applicable mounting device.

The anchor bolts shall meet the requirements of ASTM F 1554, Grade 105 (724 MPa), and be full-length galvanized. Anchor bolts shall be the Unified Coarse Thread Series and have Class 2A tolerance. The end of each anchor bolt intended to project from the concrete shall be color coded in red to identify the grade. Slip base plate 1 inch by 4 1/2 inch (25 mm by 112 mm) bolts shall meet the requirements of ASTM A 325, be high-strength bolts, and be fully galvanized. Washers shall be galvanized and shall meet the requirements of ASTM F 436. Nuts shall meet the requirements of ASTM A 563, DH, be heavy hex, and be galvanized. Nuts may be over-tapped in accordance with the allowance requirements of ASTM A 563. Galvanizing shall meet the requirements of ASTM A 153, Class C; or ASTM B 695, Class 50.

Nuts may be tapped oversize only enough to provide a finger free fit.

Anchor bolts shall be galvanized in accordance with ASTM A 153, Class C. The slip-base plate fasteners shall be mechanically galvanized to ASTM B 695, Class 50, Type 1.

B. Mastarms and Accessories.
Single or twin mastarms shall be furnished as luminaire supports when indicated in the contract documents. The horizontal span of the mastarm and the included angle between the center lines of twin mastarms will be shown in the contract documents. Such angles are defined as rotating from the standard mastarm, as viewed from above.

Mastarms shall be aluminum tube or galvanized steel to match the pole, with smooth openings into the pole shaft to provide an electrical raceway. Each mastarm shall accommodate a 2 inch (50 mm) slipfitter type luminaire.

Type A mastarms shall have no braces or truss members.

Type B mastarms shall have a single underbrace attached to the mastarm at not less than two locations.

Mast arm bolts, nuts, and washers shall be stainless steel and shall meet the requirements of Article 4187.01.

C. Breakaway (Transformer) Base.
Material for the breakaway base shall be cast aluminum meeting requirements of ASTM B 108, 356-T6 or B26, 356-T6 aluminum alloy. Transformer bases shall meet AASHTO breakaway criteria.

The breakaway base shall be designed to withstand an applied moment at the top equal to the design moment of the applicable pole, and not less than 35,000 foot-pounds (47,500 Nm). In addition, the transformer base shall yield to an applied momentum of 1,100 pound-seconds (4.9 kNs) when tested with an automobile or 400 pound-seconds (1.8 kNs) when tested with a solid mass. The tests should be conducted by the manufacturer and results certified to comply with requirements of current AASHTO requirements for breakaway luminaire supports.

The breakaway base shall be equipped with a weatherproof access door. Unless otherwise shown, the door opening shall not be less than 100 square inches (0.065 m2).

D. Steel Poles.
Steel pole shafts shall be manufactured with a taper of approximately 0.14 inch per foot (12 mm/m) of length. The steel shall not be less than 11 gauge (3.03 mm), with a minimum yield strength of 48,000 psi (330 MPa), after fabrication.

Types A and B mastarms shall be fabricated from standard weight, welded steel, 2 inch (50 mm) pipe meeting requirements of ASTM A 53, Grade B. The underbrace for a Type B mastarm shall comply with requirements of the mastarm and shall be connected to the mastarm by welded steel braces to form a truss type assembly. The mast arm to shaft bracket shall provide a water tight connection.

Steel pole shafts shall be galvanized in accordance with ASTM A 123. Steel of 1/8 inch (3 mm) thickness or less shall be galvanized to comply with requirements for 1/8 inch (3 mm) thick steel as described in ASTM A 123.

Steel mastarms shall be galvanized in accordance with ASTM A 123.

E. Aluminum Poles.
Aluminum pole shafts shall be fabricated from ASTM B 221 6063-T6 or 6061-T6 aluminum alloy tube or ASTM B 209 5086-H34 aluminum sheet. Minimum nominal wall thickness shall be 3/16 inch (5 mm) unless otherwise indicated in the contract documents. The shaft shall be tapered approximately 0.14 inch per foot (12 mm/m) of length.

Castings shall be ASTM A 356/A 356M-T6 aluminum alloy and shall meet the requirements of Article 4187.01.

The alloy for all mastarms and underbraces shall comply with requirements for the pole shaft. Types A and B mastarms shall be fabricated from tubing or pipe with a minimum outside diameter of 2.375 inches (60.325 mm), and shall be swaged, when required, to accommodate a 2 inch (50 mm) slipfitter type luminaire. The underbrace for a Type B mastarm shall be connected to the mastarm by welded braces to form a truss type assembly. Aluminum poles shall have an approved dampening device. Aluminum poles shall be blocked and paper-wrapped prior to shipment.

F. Wood Poles.
The size and class of wood poles will be specified in the contract documents. Poles shall meet requirements of ANSI 05.1, Group D, and shall be pressure treated with or pentachlorophenol meeting requirements of AASHTO M 133.

4185.03 LUMINAIRES.

A. Roadway Luminaire.
The luminaire assembly shall consist of a weatherproof, die cast aluminum or aluminum alloy housing and slipfitter with internally mounted ballast, a hinged, detachable, glass refractor, a snap in aluminum reflector, a high grade porcelain enclosed socket and terminal block with pressure type terminals for connecting leads entering from the mounting bracket or mastarm.

A heat resistant gasket shall be fitted between the reflector and a shoulder on the socket support plate to seal the optical system at this point.

The refractor shall be manufactured from high-transmission-factor, highly shockproof, prismatic glass.

The ballast for use with the high pressure sodium lamp shall be of the regulated high-power-factor type with starting current lower than operating current. It shall maintain lamp wattage within 10% variation with a line voltage regulation of ± 10%, with not less than 90% power factor.

Ballast for use with other light sources will be specified in the contract documents.

The slipfitter shall be arranged to accommodate a 2 inch (50 mm) standard pipe bracket, shall consist of bracket clamps, and shall provide for vertical adjustment and horizontal leveling of the luminaire.

A weatherproof, hinged, access door shall be provided for quick access to the terminal block and mounting arrangement. All exposed metal parts shall be made from nonferrous metal or stainless steel.

The luminaire will be specified in the contract documents in accordance with the type of lamp to be used and its size in watts.

Unless otherwise specified, light sources for roadway luminaires shall be only as listed below:

High Pressure Sodium Lamp

400 Watt
250 Watt
200 Watt
150 Watt
100 Watt
70 Watt

 ANSI Code S51WA-400
ANSI Code S50VA-250
ANSI Code S66MN-200
ANSI Code S55SC-150
ANSI Code S54SB-100
ANSI Code S62ME-70
High pressure sodium lamps shall be furnished for appropriate burning positions, as required by the luminaire.

B. Low Mounting Height Luminaires.
Low mounting height luminaires shall be complete, consisting of an optical train which includes a single piece, prismatic refractor mounted in an aluminum door assembly, an asymmetric, specular processed aluminum reflector, an anodized aluminum visor, an attached or integral ballast housing, and a cast aluminum luminaire housing. An adaptor mount and shield for sign lighting shall be furnished when specified.

The door assembly shall be equipped with noncorrosive metal pressure latches, hinges, and safety chain.

The luminaire housing shall have captive neoprene and felt double gasketing, a rear access hole in a gasketed aluminum cover plate, and tapped conduit entries as shown in the contract documents. The refractor shall be made of molded, high-transmission-factor, thermal shock resisting, crystal glass and shall be of adequate size to properly house the specified lamp and to produce the required light distribution. Its inner and outer surface shall be covered with an array of reflecting and refracting prisms and diffusing flutes which shall be designed to provide an asymmetric light distribution.

The entire luminaire shall be designed to be attached to a wall outlet box mounted to a stud, a metal channel framing, or a sign lighting adaptor and shield.

Unless otherwise specified in the contract documents, the light source for the luminaire shall be as follows:

Lamp Wattage High Pressure Sodium Lamps
250 Watt
150 Watt
100 Watt
70 Watt		 ANSI Code S50VA-250
ANSI Code S55SC-150
ANSI Code S54SB-100
ANSI Code S62ME-70
High pressure sodium lamps shall be furnished for appropriate burning positions, as required by the luminaire.

High pressure sodium lamps shall be furnished for appropriate burning positions, as required by the luminaire.

The maximum luminous intensity (candela) output shall occur at 60 degrees from the vertical, and the unit shall provide a 180 degree horizontal spread in the maximum luminous intensity (candela) plane.

The ballast for use with the high pressure sodium lamp shall be of the regulated high-power-factor type with starting current lower than operating current. It shall maintain lamp wattage within 10% variation with a line voltage regulation of ± 10%, with not less than 90% power factor.

Ballasts for use with other light sources will be specified in the contract documents.

4185.04 GROUND RODS.
All ground rods shall be approved, copper clad, steel rods of the diameter and length designated in the contract documents. Unless otherwise designated, the minimum nominal diameter shall be 5/8 inch (16 mm), and the minimum length of each individual rod shall be 12 feet (3.6 m) for control stations and 8 feet (2.4 m) for installations at lighting units. Pressure type clamps and bonding jumpers shall be included as required. Unless otherwise shown in the contract documents bonding jumpers shall be bare, solid conductor, copper wire, No. 6 AWG or larger.

4185.05 CONTACTORS.
Lighting contactors may be housed within control cabinets as shown in the contract documents.

All contactors shall be two pole, single throw, magnetically held, normally open relays rated at 480 volts AC or greater. Contacts shall be of the double break, self cleaning type with interrupting ratings as shown in the contract documents. Contact material shall be designed for lighting ballast loads and requiring no maintenance, such as filing, burnishing, or dressing at any time the contactor is in service. The cabinet housing the contactor shall contain a permanent instruction which states, "Contacts shall not be filed, burnished, or dressed."

Movable contact holders shall be of one piece, molded construction. Opening action shall be obtained by free fall from gravitational forces or by use of noncorrosive springs. Pivots, when used, shall be of the hardened, knife edge type.

Operating coils shall require a 60 hertz frequency supply. Coils shall be removable from the front of the contactor assembly without disturbing other components or wiring. Each coil shall be designed to prevent any expansion, bubbling, or melting that would render the remainder of the unit inoperative in event of a coil burnout.

4185.06 PHOTO ELECTRIC CONTROL.
The photo electric control shall be weatherproof and shall fit the standard 3 prong EEI/NEMA twist-lock socket. The control shall operate with a 60 hertz frequency control circuit and shall be designed so that any failure under normal conditions will cause the lighting circuits to be energized. All ratings shall comply with the control requirements of the contactor. The photo electric control shall be time delay type, set to turn on at 2.0 footcandles (20 lux) and off at 6.0 footcandles (60 lux).

4185.07 CONTROL CABINETS.
Control cabinets shall be Type 304 stainless steel minimum 14 gauge, or 0.125-inch (3.17 mm) aluminum, weatherproof NEMA Type 3R enclosures equipped with a full sized door gasket; drip shield; top-mounted, 3-prong, photoelectric control socket; insect proof breather; and labyrinth type breather drain and an internal back panel for component mounting. The door shall have a latch mechanism with not less than two approved roller latches. Cabinet size shall be adequate to provide access to all components for maintenance and replacement without disturbing other components or wiring. Unless otherwise detailed in the contract documents, each cabinet shall provide space for not less than one line (main) circuit breaker and four branch circuit breakers, one contactor, two surge suppressors, and a test switch. The plans show the location, type, and other details of the control cabinets.

The cabinet door shall be equipped with a single external padlock handle to operate a door latch.

Each pole-mounted cabinet shall also be equipped with pole mounting brackets, conduit, and hubs. Each pad-mounted cabinet shall be equipped with a removable bottom plate and an internal flange with hold-down clamps for attachment to a concrete base.

Appurtenances shall include a line circuit breaker that may also serve as main disconnect means, a photoelectric control, two surge suppressors, and a switch to provide a means of overriding automatic operation of the lighting system for testing purposes. The test switch shall have all functions labeled, as shown on the plans, and shall be a maintained contact three position switch The quantity and ratings of the circuit breakers and other details of individual installations will be shown on the plans.

4185.08 HANDHOLES.

A. Precast Handholes
The body of the precast handhole shall meet requirements for Class 1500D (75D) concrete pipe. The handhole cover shall be a heavy duty cast iron frame and lid that sits inside the pipe end. Handhole locations and other details will be shown in the contract documents.

B. Preformed Handholes
Preformed handholes shall be composed of mortar consisting of sand, gravel, and polyester resin reinforced by a woven glass fiber mat or of resin mortar and fiberglass. The handhole shall withstand a load of 20,000 pounds (9,000 kg). Each handhole shall be equipped with a bolt-down cover of the same material. Lock down bolts shall be stainless steel with penta head. Handhole dimensions shall be as shown on the plans.

4185.09 JUNCTION BOXES.

A. Preformed Junction Boxes
Preformed junction boxes shall be composed of mortar consisting of sand, gravel, and polyester resin reinforced by a woven glass fiber mat or of resin mortar and fiberglass. Each junction box shall be equipped with a bolt-down cover of the same material. Stainless steel screws shall be provided. Junction box dimensions shall be as shown on the plans.

B. Cast Iron Junction Boxes
All cast iron junction boxes shall be classified by the manufacturer as meeting the requirements for NEMA 4, Watertight, and shall be UL approved. The applicable provisions of Article 370 of the current NEC shall apply.

Locations and other details shall be shown on the plans.

Junction boxes and covers shall be cast iron, galvanized in accordance with requirements of ASTM A 153.

Raised buttons of specified size and location shall be cast into the surface of the box floor and cover for grounding purposes. The buttons shall be blind drilled, tapped, and fitted with screws as specified.

Neoprene gaskets shall be used.

4185.10 CONDUIT AND FITTINGS.
The type, size, and location of all conduit will be indicated in the contract documents. Substitution between types of conduit material will not be permitted.

Fittings shall be weatherproof and shall be of identical or compatible material to the conduit. Standard factory elbows, couplings, and other fittings shall be used when possible.

The inside radius of all field bends shall not be less than 6 times the internal diameter of the conduit. No bend shall kink, flatten, or otherwise significantly reduce the effective cross sectional area of the conduit.

A. Rigid Steel Conduit.
Rigid steel conduit shall meet requirements of ANSI C80.1. The conduit shall be identified with the manufacturer's name and trade mark and the words "rigid steel conduit" or "rigid metal conduit." Expansion fittings shall be weatherproof, with galvanized, malleable iron, fixed and expansion heads jointed by rigid steel conduit sleeves. As an option, the fixed head may be integral with the sleeve, forming a one piece body. The body shall be galvanized malleable iron.

B. Rigid Aluminum Conduit.
Rigid aluminum conduit shall meet requirements of ANSI C80.5.

C. Plastic Conduit and Fittings.
PVC Schedule 40 and 80 plastic conduit and fittings shall be polyvinyl chloride meeting the requirements of NEMA TC-2, TC-3, and UL 651 for Schedule 40 heavy wall type. Solvent welded, socket type fittings shall be used except where otherwise indicated in the contract documents. Threaded adaptors shall be used for jointing plastic conduit to rigid metal ducts. All materials and methods for attaching and making fittings shall comply with applicable requirements of NEMA TC-3 and UL 514 and the manufacturer's recommendation and shall be subject to approval of the Engineer.

4185.11 CONNECTOR ASSEMBLIES.
Details of connector assemblies will be shown in the contract documents. Connectors shall be supplied with complete instructions, assembly devices, and silicone lubricant for all mating surfaces, and shall meet the following requirements for the type specified:

A. Type Y-1 Connector.
Each fused Y-1 tap connector, quick disconnecting type, shall consist of:

1. Two spring loaded, copper contacts of 90% minimum conductivity suitable for gripping a 13/32 inch by 1 1/2 inch (10.3 mm by 38 mm) midget fuse, two terminal lugs, a bolt, and a locknut. Both contacts shall be fully annealed. One contact shall be adapted to be crimped to the cable and retained securely within a rubber load side (tap) housing. The second contact shall be preassembled and retained in a rubber Y-insert-body with provision for connecting the terminal lugs securely in place.

2. A permanently marked, load side tap housing, a Y-insert-body, and a Y-housing, each made of water resistant synthetic rubber. The load side housing shall provide a section to form a watertight seal around the cable, shall have an interior arrangement to suitably receive and retain one fuse contact, shall be constructed to retain the fuse when disconnected, and shall have a section to provide a watertight seal between itself and the Y-insert-body at the point of disconnection.

The Y-insert-body shall retain the second fuse contact and shall provide a watertight seal for the load side housing at the point of disassembly. The Y-housing shall provide sections to form a watertight seal around two cables and for Y-insert-body. When both through legs of the connection are not to be used, an insulated plug shall be provided with the same diameter as the cable to maintain an equivalent watertight seal.

B. Type Y-2 Connector.
Each unfused Y-2 tap connector, quick disconnecting type, shall consist of:

1. A copper pin to be crimped to the cable and a spring loaded copper receptacle, both of 90% minimum conductivity, two terminal lugs, a bolt, and a locknut. The receptacle and the crimping portion of the pin shall be fully annealed. The pin shall be adapted to be retained securely within a rubber load side (tap) housing. The receptacle shall be preassembled and retained on a rubber Y-insert-body with provision for bolting the terminal lugs securely in place.

2. A permanently marked load side tap housing, a Y-insert-body, a Y-housing, each made of water resistant synthetic rubber. The load side housing shall provide a section to form a watertight seal around the cable, shall have an interior arrangement to suitably receive and retain the pin, and shall have a section to provide a watertight seal between itself and the Y-insert-body at the point of disconnection.

The Y-insert-body shall retain the receptacle and shall provide a watertight seal for the load side housing at the point of disconnection and a watertight seal for the Y-housing at the point of disassembly. The Y-housing shall provide sections to form a watertight seal around two cables and for the Y-insert-body. When both through-legs of the connection are not to be used, an insulated plug shall be provided with the same diameter as the cable to maintain an equivalent watertight seal.

C. Type Y-3 Connector.
Each semi-permanent Y-3 tap connector shall consist of:

1. Three terminal lugs, a bolt, and a locknut. Each lug shall be provided with a mounting hole by which all lugs shall be bolted securely together.

2. A tap housing and a Y-housing, each made of water resistant synthetic rubber. The tap housing shall provide a section to form a watertight seal around the cable and a section to provide a watertight seal between itself and the Y-housing at the point of disassembly. The Y-housing shall provide sections to form a watertight seal around two cables and for the tap housing. When all legs of the connection are not to be used, an insulated plug shall be provided with the same diameter as the cable to maintain an equivalent watertight seal.

D. Type L-1 Connector.
Each L-1, fused, quick disconnecting, in line connector shall consist of:

1. Two spring loaded, copper contacts of 90% minimum conductivity suitable for gripping a 13/32 inch by 1 1/2 inch (10.3 mm by 38 mm) midget fuse.

Both contacts shall be fully annealed, adapted to be crimped to the cable, and retained securely within rubber housings.

2. A permanently marked, load side and line side housing, each made of water resistant, synthetic rubber. Each housing shall provide a section to form a watertight seal around the cable, shall have an interior arrangement to suitably receive and retain the fuse contact, and shall have a section to provide a watertight seal between the two housings at the point of disconnection.

E. Type L-2 Connector.
Each L-2, unfused, quick disconnecting, in line connector shall consist of:

1. A copper pin and a spring loaded copper receptacle, both of 90% minimum conductivity, to be crimped to the cable. The receptacle and the crimping portion of the pin shall be fully annealed. Both the pin and receptacle shall be adapted to be retained securely in rubber housings.

2. A permanently marked, load side and line side housing, each made of water resistant, synthetic rubber. Each housing shall provide a section to form a watertight seal around the cable, shall have an interior arrangement to suitably receive and retain the pin or receptacle, and shall have a section to provide a watertight seal between the two housings at the point of disconnection.

4185.12 WIRE AND CABLE.
Wire and cable construction types, conductor sizes, and working voltage ratings will be specified in the contract documents.

A. Single Conductor Wire and Cable.
Unless otherwise specified in the contract documents, the insulation shall comply with applicable requirements of UL Standard No. 44 and shall be UL listed for use at conductor temperatures of 167°F (75°C) or greater in wet or dry locations. All wire and cable shall bear required UL labeling repeated throughout its length.

The insulation shall be 600 volt. Thermosetting, cross linked polyethylene meeting requirements of ICEA S-66-524 (NEMA WC-7). Insulation thickness shall meet requirements of Table No. 3-1 Column "A".

The wire and cable shall be UL Listed Type USE-2 per UL Standard 854 and Type RHH or RHW-2 per UL Standard 44.

Conductors shall be annealed copper meeting requirements of ASTM B 3. Sizes smaller than No. 8 AWG, may be solid or stranded. Sizes of No. 8 AWG, and larger shall be stranded. Stranded conductors shall meet requirements of ASTM B 8, Class B.

B. Aerial Power Cable.
Aerial power cable shall consist of an assembly of individually insulated conductors with a messenger cable. The insulated conductors may be either laid about the messenger or secured to the messenger with a flat binding strip. The conductors shall be stranded aluminum or steel reinforced aluminum (ACSR). The messenger shall be steel or ACSR. The binding strip shall be copper, bronze, or steel. Steel messengers and binding strips shall be corrosion protected by copper, aluminum, or zinc coatings. The insulation shall meet requirements of Article 4185.12, A.

C. Thermoplastic Wire and Cable.
Thermoplastic wire and cable shall be used only where specified in the contract documents. The conductors shall meet the requirements of UL Standard No. 83 and shall be UL listed for Type THW or Type THHN (THWN).

D. Control Cable.
Control cable shall consist of an assembly of conductors individually covered with polyethylene insulation, or polyethylene insulation with polyvinyl chloride jacket together with suitable fillers covered overall with polyester tape and a polyvinyl chloride jacket. The cable shall comply with requirements for Type B Control Cable; as described in ICEA S-61-402 (NEMA WC-5). Control cable shall be used only where specified in the contract documents.

E. Flexible Cord.
Flexible cord shall comply with applicable requirements of UL Standard No. 62 (Table 3.14) and shall be UL listed for Type SO.

F. Bare Copper Ground Wire.
These conductors shall be soft drawn, meeting requirements of ASTM B 3, or medium hard drawn, meeting requirements of ASTM B 2.

For direct burial installation, sizes smaller than No. 4 AWG shall be solid. Sizes of No. 4 AWG and larger shall be stranded. For installation in raceways or ducts, sizes smaller than No. 8 AWG shall be solid. Sizes of No. 8 AWG and larger shall be stranded. Stranding shall meet requirements of ASTM B 8, Class B.

4185.13 SURGE SUPPRESSOR.
The surge suppressor shall be a metal oxide varistor type, suitable for 120/240 volt single-phase line voltage, with a UL1449 Category B3 voltage rating of 500 volts (line-neutral). Unit shall have a single-pulse (8/20 microsecond) maximum surge current rating of 50,000 amperes. The enclosure shall be NEMA 1, suitable for mounting inside a lighting control cabinet. Each line shall be fused and have a visual indication light to show power and suppression status.

4185.14 TEST SWITCH.
Test switch shall be a heavy duty maintained contact, three position switch. Contacts shall be 600V, 10 amperes, double break type.

4185.15 CIRCUIT BREAKER.
Circuit breakers shall be 240 volts and 480 volts rated, with minimum interrupting ratings of 25,000 amperes at 240 volts, and 18,000 amperes at 480 volts. Trip mechanism shall be thermal magnetic with trip-free toggle operator. Frame and trip ratings shall be as shown on the plans.