Specifications include, but are not limited to: A. GENERAL: This section applies to all motors. Select for starting torque and current, suitable to start and continuously run equipment served. Horsepower rating shown on Drawings are preferred, but motor must not be loaded more than 1.0 X nameplate horsepower. Provide larger motor if required to stay within this limitation, and include all costs for any required increases in the electrical system. All motors shall have metallic nameplates marked with information required by NEC 430-7. Motors that are controlled by inverters shall designed for this application. B. ENCLOSURE: Totally enclosed fan cooled for all 3 phase motors. Frame construction shall be steel or cast iron with all surfaces including air passages coated with a rust inhibiting primer and finished with an alkyd or epoxy enamel paint. C. INSULATION: Class B for maximum 40° C ambient, Class F or H or higher. D. EFFICIENCY: Motors shall be premium efficiency type and have all copper windings. E. SERVICE FACTOR: 1.15. F. ELECTRICAL CHARACTERISTICS: Provide nameplate ratings the same as circuit voltage indicated on the electrical drawings. Coordinate to give proper operation with starting equipment scheduled. G. SINGLE PHASE MOTORS: Permanent split capacitor start unless special load requires another type, resilient mounting, inherent overload protection and sealed bearings requiring no lubrication but with provisions for future lubrication. H. THREE PHASE MOTORS: Ball bearings with grease lubrication fitting on top and drain on side or bottom. Average bearing life shall be 150,000 hours. I. ACCEPTABLE MANUFACTURERS: Allis Chalmers, Baldor, Century, General Electric, Marathon, Reliance, Siemens, US Motors and Westinghouse.
