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i <br /> SECTION 16480 <br /> 480 VOLT MOTOR CONTROL CENTERS <br /> PARTI GENERAL <br /> 1 .01 REFERENCE STANDARDS <br /> A . Motor control centers shall be designed , built and tested in accordance with the latest editions <br /> and revisions of NEMA Standard ICS -2 and Underwriters Laboratories (UL) Standard No . <br /> UL-845 . Equipment shall conform to ANSI C19 . 3 test standards and the requirements of the <br /> National Electrical Code (NEC) . <br /> 1 .02 QUALITY ASSURANCE <br /> A. The motor control centers shall be the product of a manufacturer who shall also be the <br /> manufacturer of all the circuit breakers, fused switches and motor starters included in the motor <br /> control center and who has produced the same type of equipment for a period of at least 15 <br /> consecutive years . <br /> i <br /> B . Motor control centers shall be designed, assembled and tested by the manufacturer of the motor <br /> control equipment included in the control center assembly. <br /> 1 .03 MANUFACTURERS <br /> j A. The general arrangement of the motor control centers is shown on the Drawings. Motor control <br /> centers shall be one of the following products: <br /> I1 . Cutler Hammer/Westinghouse " 2100 Series" . <br /> 2 . Square D Corp . " Model 6 " . <br /> 3 . General Electric Co . " 8000-Line" . <br /> PART2 PRODUCTS <br /> 2.01 RATING <br /> IA. Service: 480 Volt, 3 Phase, 3 Wire, 60 Hz. <br /> I B . Main and feeder circuit protective devices shall be fully rated for the specified short circuit <br /> duty. Systems employing series connected ratings for main and feeder devices shall not be <br /> used Motor starter units shall be tested and UL labeled for the specified short circuit duty m <br /> 1 combination with the motor branch circuit protective device. <br /> C . The continuous current rating of the main horizontal bus shall be as shown required. Vertical <br /> busses shall be sized for the structure load and shall have a minimum rating of 300 Amps. Bus <br /> bracing shall equal or exceed the specified equipment short circuit rating. <br /> D . Motor control centers, including devices, shall be designed for continuous operation at rated <br /> current in a 40 degree C ambient temperature. <br /> 044572017 <br /> 16480- 1 <br />