This electrical single-line diagram outlines a 2500A, 3-phase, NEMA 3R temporary generator connection incorporating a Kirk key interlock system to prevent access to cam lock panel mounts until the permanent generator circuit breaker is opened. The circuit connects a portable generator and portable load bank arrangement to the main switchboard equipped with a 2500AT and 2500AF 100% rated trip unit. A separate branch feeds a fire pump ATS and controller with a 1-inch conduit for controls and an underground run of eight 4-inch conduits including spares.
150 PORTABLE GENERATOR PORTABLE LOAD BANK 100% RATED K TEMP GEN CONNECTION 2500A, 3P, NEMA 3R MC FC ACCESS TO CAM LOCK PANELMOUNTS PREVENTED UNTIL PERMANENT GENERATOR CIRCUIT BREAKER IS OPENED AND KIRK KEY IS REMOVED FIRE PUMP FIRE PUMP ATS AND CONTROLLER 1"C CONTROLS ST 2500AT 2500AF A2503 L=3'-7" VD=0.03 % AFC:14,749 A25004 UNDERGROUND (8) 4"C INCLUDING SPARE
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