Art. 1065.01 Protective Devices LIGHTING SECTION 1064. RESERVED SECTION 1065. PROTECTIVE DEVICES
1065.01 Fuseholders and Fuses. Fuseholders and fuses shall be as follows.
a.Fuseholders.
1.General. Each fuseholder shall consist of a two-section unit designed to hold small-dimension cylindrical fuses of the type required. Each section shall be permanently marked with line and load side designations and the unit shall have a water and vapor-tight seal when the sections are joined. Two pole quick disconnect fuseholders shall be used unless otherwise specified. The terminals and the contacts in the fuseholder shall be made of tinned copper or other material suitable for contacts as approved by the Engineer. The contacts shall be spring loaded or tulip style to exert contact pressure on mating parts. Fuse holders shall be rated for 30 A at 600 V at 167 °F (75 °C) operation.
2.Fuseholder Material. Fuseholders shall have a molded plastic, neoprene rubber, or impact resistant polymer housing. Wires shall attach to the fuse holder by a crimping operation, except that connection of No. 2 wires to breakaway fuse holder receptacles may be via a set screw connection. Each fuse holder shall be of a size proper for the wires to be attached. The assembly shall be provided with insulating boots as needed.
3.Fuseholder Design. Phase to phase circuit applications shall be designed so that both phase conductors are disconnected at the same time. Phase to neutral circuit applications shall be designed so that both phase and neutral conductors are disconnected at the same time. Blanks shall be used instead of fuses for the neutral conductor and they shall be clearly marked with white bands to designate a neutral plug.
4.Fuseholder Operation. The fuseholder shall be capable of disconnecting upon sufficient tension in the connected wires, as in a pole knockdown. The fuse shall remain enclosed in the de-energized portion of the fuseholder upon disconnection. The fuse shall not be utilized as the disconnection means.
b.Fuses. Fuses for installation within fuse holders for protection of luminaires shall be small-dimension, 1 1/2 in. x 13/32 in. (38 mm x 10 mm), cylindrical fuses of the time-delay type. The fuses shall be rated for 500 V AC and meet the requirements of UL 248-14. The fuses shall have a listed interrupting rating of not less than 10,000 rms symmetrical amperes at rated Wire and Cable Art. 1066.02 voltage. They shall be sized at 300 percent of the starting or operating current whichever is greater, but in no case greater than 50 percent of the branch circuit conductor ampacity.
1062.02 Lightning Protection. The surge arrester shall be totally
weatherproof, and shall withstand a surge current up to 20,000 amperes (8 X 20 micro seconds) and repetitive surges of 200 amperes for a minimum of 10,000 occurrences. Response time shall be less than 50 nanoseconds. The current drain shall not exceed 100 microamperes. The unit shall not allow holdover current or conduction to ground after the surge ends. Protection shall be achieved for both phase and neutral conductors with surges being passed to ground and not to neutral. There shall be no discharge lag in the protection of phase conductors over the neutral conductor. SECTION 1066. WIRE AND CABLE
1066.01 Unit Duct. The unit duct shall be an assembly of insulated conductors
which are factory pre-installed in a coilable nonmetallic conduit. The polyethylene duct shall be extruded directly over the cable at the factory in long continuous lengths. The unit duct shall be according to UL 651A and UL 1990 for Schedule 40 conduit.
1066.02 Conductors. All cable shall be rated 600 V. The cable shall be rated
90 ºC wet and dry and shall be resistant to oils and chemicals. Any cable used for a service entrance shall have a Type USE-2 rating. The UL listing mark, cable voltage, insulation type and ratings, as well as the cable size shall all be clearly printed on the cable in a color contrasting with the insulation color. When specified, each cable installed shall be identified with its complete circuit number at each termination, splice, junction box or other location where the wire is accessible. Electric cables smaller than No. 2 AWG shall be solid color coded. Neutral wires shall be color coded white. Single phase three wire runs of cable shall be color coded one black, one red, and one white; three phase three wire runs of cable shall be color coded one black, one red, and one blue. Single phase two wire runs shall be similarly color coded based on the applicable phase(s) and neutral. The insulated ground wires and the equipment grounding conductor shall be color coded green. Tape on the conductor or color striping of cables will not be acceptable in lieu of the specified color coding means. Cables sized larger than No. 2 AWG shall be color coded as specified having not less than 12 in. (300 mm) of cable ends field-taped with half-lapped color tape or by other means approved by the Engineer.
a.Copper Conductors. Conductors shall be uncoated or coated copper. Uncoated conductors shall be according to ASTM B 3, ICEA S-95-658, NEMA WC 70, and UL 44. Coated conductors shall be according to ASTM B 33, ASTM B 8, ICEA S-95-658, NEMA WC 70, and UL 44.
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 967–968 of 1,217. View official source ↗