An electrical diagram details a 150 kVA transformer stepping down from 480V to 208Y/120V, three-phase, four-wire service located at Level 4 East Head House. The feed connects to panelboard TNF4050LCP rated at 225A, three-pole, with a circuit breaker designation. A grounding conductor of size 1/0 AWG is routed within a three-quarter-inch conduit to a ground connection.
TRANSFORMER 150KVA 480V-208Y/120V 3PH, 4H LEVEL 4 EAST HEAD HOUSE SSCP POWER TNF4050LCP 225A 3P 3/4"C-1#1/0 AWG GND C.B. 003Z
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