我看到争议很大。有人拿出国标说“NEC 250.134(B), Exception 1”有这个表述,可我没查到这个exception。房兄看到过吗?
我看到争议很大。有人拿出国标说“NEC 250.134(B), Exception 1”有这个表述,可我没查到这个exception。房兄看到过吗?
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