Electrical · E-RMWF4

Electrical Riser Diagram with Transformer and Panel Feeders

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An electrical distribution riser diagram featuring Panel 'HP' rated at 200A MLO, 480/277V, 3-phase, 4-wire with 42 circuits feeding a 75KVA transformer through a 100A 3-pole breaker and feeder 31. The transformer steps down the voltage to 480-208/120V and connects via feeder 403 to Panel 'HL' rated at 200A MCB, 208/120V, 3-phase, 4-wire with 42 circuits. A grounding conductor labeled 4G connects the transformer to earth ground per National Electrical Code Article 250. Multiple stub conduits terminate in the riser room for additional circuit routing.

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