I have a question regarding multi-branch circuits utilizing a common neutral. For example, you have a network: Phase A, Phase B, Phase C & Neutral. According to my co-workers, in the NEC 2008 each phase needs a separate neutral home-run back to the panel and no sharing of neutral 'common neutral? is allowed. I?m wondering if this statement is valid, because I cannot find it in the NEC 2008 code book. I would appreciate any help?
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