Laserfiche WebLink
F. Signage <br />1. Each motor control center shall be furnished with a sign marked "DANGER .480 VOLTS <br />- KEEP OUT". Letters shall not be less than 1 -in high, 1/4 -in stroke. Signs shall be <br />laminated plastic, engraved white letters with a red background. <br />2. Compartments with voltages from sources outside of the compartment shall have a sign <br />mounted inside the compartment door marked "CAUTION - THIS UNIT CONTAINS A <br />VOLTAGE FROM AN EXTERNAL SOURCE". Letters shall be black on a high <br />visibility yellow background. <br />3. Provide a 2 -in by 6 -in nominal engraved master nameplate, of two ply laminated plastic, <br />black face, 0 -in high by 1/8 -in stroke white letters, screw fastened to the top wireway of <br />each lineup with stainless steel screws. Include MCC designation and service ratings. <br />4. Provide 1 -in by 3 -in nominal engraved unit nameplates of two ply laminated plastic, black <br />face, 3/8 -in high by 1/16 -in stroke white letters, screw fastened to each door with stainless <br />steel screws. <br />2.03 COMPONENTS <br />A. General <br />1. Provide the NEMA size starter, circuit breaker trip ratings, control power transformers and <br />thermal overload heater element ratings matched to the motors and control equipment <br />actually supplied, in compliance with the NEC and the manufacturers heater selection <br />tables. All variations necessary to accommodate the motors and controls as actually <br />furnished shall be made without extra cost to the Owner. <br />B. Circuit Breakers <br />1. Power circuit breakers (400 Amps and larger): 100 percent equipment rated, 600 Volt, <br />molded case circuit breakers with integral fully adjustable solid state trip device. Trip <br />device shall be temperature insensitive and have the following characteristics and <br />functions: <br />a. Independently adjustable long time pick-up and delay. <br />b. Independently adjustable short time pick-up and delay with ?t in and out switch. <br />C, Adjustable instantaneous. <br />d. Independently adjustable ground fault pick-up and delay. <br />e. Trip mode targets for over load, short circuit and ground fault. <br />f. Long time pick-up light. <br />2. Circuit breakers (Less than 400 Amps): Thermal -magnetic trip type, 600 Volt, 2 or 3 Pole <br />as required., labeled in accordance with UL 489. Provide integral current limiting firses as <br />required to meet the specified equipment short circuit rating. Provide independently <br />adjustable magnetic trips on 225A frame breakers and larger. <br />044572017 <br />16480-4 <br />