Eaton ATC-300 O & M Manual

Also see for Cutler-Hammer ATC-300: Instruction booklet Operation and maintenance manual Instruction booklet Instruction booklet O & M Manual

For more information visit: www.eaton.com IB01602015EInstruction BookletPage 16 Effective: August 2010 ATC-300 2-Position ContactorBased Transfer SwitchTable 4. Transfer Switch Equipment Wire Sizes4.5 WiringPower sources, load conductors, and control wiring should beconnected to locations as indicated in the Customer Wiring Book-let supplied with the ATS equipment.Once the ATS equipment has been installed and wired, performthe initial mechanical and electrical procedures as outlined in Sec-tion 6 to verify that the equipment is installed and operating prop-erly.4.6 Engine Start ConnectionThe engine control contact connections are located on the logicpanel of the ATS. Connect the engine start wires to the terminalsmarked 13 and 14 on J-5 connector on the ATC-300 Controller(see Figure 12). A contact closes between these terminal whenan engine start signal is provided by the ATS logic. The wiringdiagram provides additional engine start connection information.Use the proper wire size as listed by the generator set (Genset)manufacturer.TRANSFER SWITCH AMPERE RATING WIRE SIZE RANGES NUMBER OF CABLES PER PHASE TERMINAL TEMPERATURE RATING °C (°F)100 #14-2/0 1 75 (167)200 #6-250 KCMIL 1 75 (167)320 #4-600 KCMIL or (2) 1/0-250 KCMIL 1 or 2 - depending on wire size used 75 (167)400 #4-600 KCMIL or (2) 1/0-250 KCMIL 1 or 2 - depending on wire size used 75 (167)600 #2-600 KCMIL 2 75 (167)WARNINGPOWER CONDUCTORS AND CONTROL WIRING MAY HAVE VOLT-AGE PRESENT THAT CAN CAUSE SEVERE PERSONAL INJURY ORDEATH. DEENERGIZE ALL POWER OR CONTROL CIRCUIT CON-DUCTORS BEFORE BEGINNING TO PERFORM ANY WIRING ACTIV-ITY TO OR WITHIN THE ATS EQUIPMENT.CAUTIONENSURE THE ATS VOLTAGE IS SET CORRECTLY. IT SHOULD BETHE SAME AS THE SOURCE 1 AND SOURCE 2 LINE VOLTAGES.OPERATING THE EQUIPMENT ON IMPROPER VOLTAGE CANCAUSE EQUIPMENT DAMAGE.NOTICEPRIOR TO MAKING THE ENGINE START CONNECTION TO THESWITCH, SET THE ENGINE GENERATOR CONTROLS SELECTORSWITCH IN THE OFF POSITION TO PREVENT AN UNWANTEDENGINE START. CONTROL WIRING, SUCH AS THE ENGINE STARTWIRES, MUST BE RUN IN A SEPARATE CONDUIT FROM THEPOWER CABLES.