NEC Code Verification
NEC Code Verification
(OP)
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RE: NEC Code Verification
The best answer for the NEC is Art.210.19(A)(1) for branch circuits and Art.215.2(A)(1) for feeders. I had to oversize neutrals many times because of nonlinear loads and harmonics. There is special transformers called "K Type" that have up to 200% larger neutral windings.
Hope this helps,
Dave