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GENERAL MECHANICAL <br />MATERIALS AND METHODS <br />Section 15050 <br />15-1207 <br />4. Westinghouse <br />5. Lincoln <br />6. General Electric <br />2.09 MOTOR STARTERS, ELECTRICAL DEVICES, AND WIRING <br />A. Motor Starters: <br />Magnetic motor starters for equipment provided under the Mechanical Work shall be <br />furnished by the Mechanical Contractor and turned over to the Electrical Contractor <br />for installation, unless otherwise noted. <br />a. Magnetic motor starters shall be provided as part of motor control centers <br />shall be provided and installed by Electrical Contractor <br />2. Unless otherwise noted, magnetic motor starters shall be furnished in NEMA 4 <br />enclosure for outside installation and NEMA 1 enclosure for inside installation, with <br />three thermal overloads for three- phase motors and one overload element for <br />single-phase motors. All overloads shall be ambient compensated. <br />3. Furnish single phase motors with manual motor starters having integral overload <br />protection. <br />4. Furnish 3-phase motors with full voltage, magnetic across -the -line starters unless <br />noted otherwise. <br />5. Provide thermal overload protection for all 3-phase legs. Provide motor starters with <br />single phase protection. <br />6. Provide fail -open auxiliary contacts, pre -wired to a terminal strip, for future remote <br />alarm wiring and run-time totalization. Refer to Division 16. <br />7. Provide equipment starters with an adequate control transformer, complete with fuse <br />protection, to supply 120 volt source for control circuit, regardless of line voltage. <br />8. Provide hand -off -automatic selector switches in cover. <br />9. Variable Frequency Drive Controllers: Provided under Section 15190 - Variable <br />Frequency Drive Controllers. <br />B. Manual switches shall have pilot lights and extra positions for multi -speed motors. <br />C. Overload protection: Melting alloy type thermal overload relays. <br />D. Magnetic Starters: <br />1. Maintained contact push buttons and pilot lights, properly arranged for single speed <br />or multi -speed operation as indicated. <br />2. Trip -free thermal overload relays, each phase. <br />3. Interlocks, pneumatic switches, electric relays and similar devices as required for <br />coordination with control requirements of Division 15 Controls Sections. <br />4. Externally operated manual reset. <br />7 <br />