715Lighting Material

715.02 Steel Conduit Galvanized steel conduit shall be of uni form thickness with

scale-free, smooth circular bore to permit cutting of clean, true threads. Steel conduit and couplings shall be Schedule 40 galvanized st eel pipe conforming to the requirements of ASTM A 53. Threaded couplings shall be conduit type permitting the end of conduits to fully abut each other squarely within the coupling. Other fittings for metal conduit, exclusive of bushings shall be threaded malleable iron conforming to the requirements of ASTM A 338 and shall be galvanized in accordance with the requirements of AASHTO M 232. All bushings shall be threaded, insulated grounding type.

715.03 Non-Metallic Conduit Non-metallic conduit shall be rig id unplasticized

polyvinylchloride conduit, suitable for Type II or Type III installations, whichever is required and shall conform to the standards of the NEMA or the UL.

715.04 Prewired Conduit Prewired conduit will no longer be ac cepted

715.07 Secondary Wiring Secondary wiring cables, including ne utrals and

grounding conductors, shall be 600 volt cables and shall consist of single conductor, stranded, soft-drawn or annealed copper wire, insulated with flame retardant, moisture and 7-47 heat resistant thermoplastic material. The cable shall be UL approved and listed as THW, THWN or XHHW. Wire shall be of sufficient size to allow a maximum voltage dr op of 5 percent from source of power to the most remote luminaire. Phase identification shall be made by factory-applied color coding. Terminal lugs shall be cast copper alloy, solderless, mechanic al type. All conduit connections in above ground junction boxes and lig ht standards shall be made by connector kits, fused or nonfused, as indicated on the plans. Splices for the roadway lighting shall be made by straight through or wye connector kits as required. Where these connector kits cannot be used as verified by the Resident, connections on cables in junction boxes shall be made by splicing as described elsewhere. The connector kits shall be a quick disconnect type. Double connector kits shall be used where there is more than one phase conductor. Fused "wye" connectors shall be composed of a "wye" line side housing assembled with a load side and fuse terminal housing. The housing shall be formed from water- resistant synthetic rubber. Each housing shall provide a water seal around the cables and when fully assembled shall form a watertight connector. The interior shall be arranged to receive and retain line side wiring and the fuse contacts. The fuse contacts shall be spring-loaded copper designated for 30 amperes, 600 volts, shall have 90 percent minimum conductivity and shall be suitable for gripping 5 amperes or as designated on the plans, 600 volt cartridge type midget fuse approximately 13/32 inch in diameter and 1½ inches long. The contacts shall be fully annealed. The load side conductors shall be connected by crimping and the line side conductors shall be connected with screws. The connector shall be of the non-locking type that will break off under extreme tensile stress leaving no exposed metal contacts on the line side of the connector. The cable diameter used will determine the size of each housing. The load side housing shall retain the fuse when disconnected. Non-fused connectors shall be similar to the fused "wye" conne ctors. The cable diameter will determine the size of each housing of each connector. Fuses for connectors shall be rated at 5 amperes or as indicat ed on the plans.

715.08 Luminaire LED fixtures

The luminaire shall be designed for the wattage rating and voltage indicated on the plans and for operating on a multiple circuit. All luminaries shall be new and be the product of the same manufacture 7-48 The LED shall have a minimum of 100,000 hours and have a ten year warranty on the fixture and led modules. Light color temperature shall be 5000-5500 k. Each fixture shall have a minimum of at least 2 separate light sources. Lenses or refractors shall be guaranteed not to yellow for a period of 20 years. Fixtures shall be IES full cutoff. Lm 80 test data shall be supplied in the bid package The LED fixtures must be equipped with a Smart Driver. The Smart Driver shall provide current regulation for individual light clusters. Current accuracy over the LED operating temperature range must be +/- 3%. It shall have over temperature protection, shut down at critical temperature and resume operation temperature. Under voltage lockout for power off or brownout. The line side of each fixture/ retrofit must have surge suppression that meets or exceeds ANSI/IEEE C62.41-2002 Category C–. Led fixtures shall have a lamp lumen depreciation of no more than (LLD) 15% over 52,000 hours, 12 years. On any contract supplying at least 10 light fixtures 1 additional spare fixture for each 10 fixtures shall be supplied to Maine Department of Transportation.

715.09 Luminaire, Lamp and Ballast for High Mast Lighting Sha ll conform to

715.08. The luminaire shall provide ANSI-IES Type I, Type IV, or Type V distributions.

715.10 Photo Electric Control The control shall meet the foll owing minimum

requirements:

715.11 Service Equipment The service pole or service rack and other entrance

equipment shall be as detailed on the plans. All service equipment new or upgraded shall be marked with an appropriate arc flash plaque or decal with the following information : Flash hazard boundary Cal/cm2 hazard at 18 inches PPE level Shock hazard when cover is Limited approach boundary Restricted approach boundary The prohibited approach boundary This shall be located on the outside of the equipment and shall be visible, weatherproof, and fade resistant, and not easily removed. All new controller cabinets, traffic signal or lighting, shall be configured to eliminate arc flash. All electrical equipment will be dead front, no open terminals, bus bars, breakers, or exposed terminal strips. All live parts over 50 volts shall be covered with Lexan or a suitable barrier to eliminate the possibility of an arc flash. The control cabinet shall be fabricated from cast aluminum, sh eet aluminum, galvanized steel, or stainless steel. The following are required:

715.12 Lowering System for High Mast Lighting Each pole shall be furnished with

a mechanical lowering system operated by cables and an electrically operated winch that will permit servicing of the luminaires and associated electrical and mechanical apparatus from the ground. Lowering systems shall permit lowering of the complete assembly, including luminaires, ballasts, fuses, and other apparatus, which may require periodic inspection or servicing, to a height of 5 feet or less above the pole base plate. At the top of the pole shaft there shall be mounted a detachab le head assembly which remains fixed in position during the raising and lowering operation. The head assembly shall consist of 3 or more symmetrically located fixed support arms, which will carry the weight of the lowering assembly. The fixed head assembly shall incorporate no moving 7-51 parts except for the necessary pulleys, rollers, or sheaves that guide the lowering cables and electrical cable during the lowering operation of the assembly. The fixed head assembly and luminaire lowering ring shall be galvanized steel. All required pulley rollers or sheaves and associated bearings, bushings and shafts shall be constructed of highly corrosion resistant materials not relying upon plating of the parent material for corrosion protection. All pulleys and rollers attached to the head assembly shall have permanently lubricated bearings or bushings. All parts of the head assembly shall be protected with covers, screens, shields, as necessary, to prevent entrance of dirt, moisture, ice accumulation, nesting of insects or birds or other contaminants harmful to the operation of the lowering device. All miscellaneous fittings, fasteners, or hardware shall be fa bricated from corrosion resistant materials that do not rely on plating for their corrosion protection. A lightning rod of approved design s hall be attached to the top of each pole and shall be firmly attached to the pole shaft or head assembly to provide good electric bonding to the pole shaft. The entire luminaire lowering ring assembly shall be raised an d lowered by three or more symmetrically placed stainless steel aircraft type cables located inside the pole shaft and extending through the head assembly support arms and attached to the lowering ring. Electrical cable supplying energy from the base of the pole to the luminaire ring shall be rough service mining type cable consisting of 3-600 volt conductors assembled with a messenger into a single cable. No electrical disconnect shall be permitted at the top of the pole. In addition, a stainless steel guide cable or equivalent shall be attached to the inside of the pole shaft to prevent the twisting of the lowering and electrical cables during the raise- lower operation. Each of the stainless steel lowering cables shall be capable of supporting the entire lowering assembly. When the luminaire ring assembly is in the fully raised positi on, a mechanism for securing the luminaire ring to the head assembly shall be provided. Such mechanism shall provide support for the lowering ring and shall latch the ring to the head assembly thus permitting the removal of all tension on the cables. All mechanisms shall be designed to provide the operator with a positive means of ascertaining when the raising operation is complete and the ring assembly is in the proper resting position. The inner portion of the lower ing ring shall be equipped with a protective bumper or roller system which will prevent damage to the pole shaft surface and preclude excessive swing during the lowering-raising operation. Winches shall be operated by an appropriately geared 120 volt electric drive motor with adjustable torque limiter that can be easily hand-transported. One drive motor assembly shall be furnished which will operate all units. A rubber covered heavy-duty type "SO" rated 600 volt cable with connectors shall be provided to test the luminaires when they are in a fully lowered position. 7-52 An approved junction box shall be installed in the hand hole o f each pole that will accommodate the terminations of the underground cable with the cable in the pole serving the luminaires and to include a 480 volt grounded receptacle. Secondary lightning arresters shall be rated for 650 volts RMS and shall be designed for outdoor use. The arresters shall be installed in each phase conductor to ground and shall be attached in or on the luminaire lowering device in a location accessible for inspection and servicing when the device is lowered.