I am installing several 600V delta primary /480V wye secondary transformers. All transformers feed 3 phase 3 wire equipment. The NEC 250.20 B(2) requires that 3 phase 4 wire wye connected systems in which the neutral is used as a circuit conductor be grounded. It doesn't discuss 3 phase 3 wire system. Do I need to run a Grounding Electrode Conductor to building steel?
I am planning to bond the neutral point, equipment grounding conductors, and transformer case together at the transformer. I believe this will satisfy the code requirements. I am I right?
I am planning to bond the neutral point, equipment grounding conductors, and transformer case together at the transformer. I believe this will satisfy the code requirements. I am I right?