An existing power single line diagram features a 9KVA transformer designated TR1E connected to an existing 480V, 277/3-phase, 4-wire panel designated H1E. A 35-amp protective device feeds the system, and grounding is provided per National Electrical Code requirements.
EXISTING PANEL "H1E" 480V. 277/ 3∅, 4W. PER NEC 35A TXFMR "TR1E" 9KVA
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