Electrical · E-VJJA9

Main Electrical Room Switchboard Single Line Diagram

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This electrical single line diagram details switchboard SWB1089BP located in the main electrical room on level 1 for ground support equipment chargers. The system operates at 277/480 volt, 3-phase, 4-wire with a 1200 amp bus and 100 KAIC rating. Circuit breaker positions 1 through 3 feature 100 amp frame breakers with spare feeds, while position 4 includes an 800 amp frame and trip breaker. A 1200 amp breaker with ground fault protection feeds a multi-metering unit, alongside spare spaces and a transient voltage surge suppressor.

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