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  1. PerigonRobert

    System bonding jumper sizing NEC 250.30

    I have a 1500 KVA (4160 Delta/ 480 Wye) transformer connected to a 3phase-3wire system (no neutral). Grounded at the X0 transformer terminal within the transformer secondary. Secondary wiring is 6 parallel underground conuits with 3-350kcmils phase conducter per conduit. My question is how...

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