Electrical · A-8V89P

Existing Panel

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An electrical distribution single line diagram shows a forty-five KVA transformer designated as TR1 connected to existing panels H1 and L1. Panel H1 operates at 480/277 volt, three phase, four wire service and connects via three number 6 THHN conductors, one number 8 THHN ground conductor, and a one inch conduit. Panel L1 operates at 208/120 volt, three phase, four wire service and connects through a 175 amp protection device with three number 2/0 THHN conductors, one number 6 THHN ground conductor, and a two inch conduit. Grounding is provided per the National Electrical Code.

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