A 45KVA three-phase transformer with a 480V primary and 208Y/120V secondary feeds a 225A panel designated EDP2172LP with a 10KAIC rating. The transformer is protected by a 150A three-pole circuit breaker and includes a 70A three-pole circuit breaker connection. Grounding is provided via a 3/4-inch conduit containing a number 6 AWG ground conductor connected to an earth ground.
3/4"C-1#6AWG GND TRANSFORMER 45KVA 480V-208Y/120V 3PH, 4H "TNF2173LP" "EDP2172LP" 225A, 208Y/120V 3PH, 4W, 10KAIC 150A 3P C.B. C.B. 70A, 3P 150A, 3P 004X
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