An electrical single-line schematic detailing the connection between a 2500 KVA utility transformer and a 4000 amp 480/277V main switchboard pull section. The PG&E utility transformer steps down 12470 volts to 480/277V within a NEMA 1 enclosure. Conductors route from the transformer secondary to the MMSG1-1A pull section through an upstream disconnect or overcurrent protective device.
MMSG1-1A PULL SEC1 4000 A 480/277 PG&E TX 2-1A 2500 KVA 12470 Utility-480/277V NEMA 1
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