AnsweredAssumed Answered

which wiring method can be accepted and permitted?

Question asked by jupeirong on Sep 11, 2018

My company had a hotel project in Saipan, but less knowledge of  NEC codes and NEMA codes.

The original drawings designed by a local consultant. The wiring method is showed in the following pictures.

 

 

 

But the construction drawings designed by a Hong Kong consultant. The wiring method changed, showed in the following pictures.

 

 

 

Now, the questions come such as the following:

1. Which wiring method can be accepted or/and permitted in America and why? Which code or clause can provide the proof?

2. Why 2 main incoming buss-bars at least in a panel? I can't find any description in NEMA PB-1.

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