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SJ/SO cord conductor color use

Question asked by on Jun 29, 2020
Latest reply on Jul 2, 2020 by losscontrol

I have a heating unit that is supplied 3 phase (with ground) power via an SJ/SO type of cord (it may be either 230 or 460).  The question is about conductor colors within manufactured cables: do I have to re-identify the white wire some other color?  Most 4 conductor SO/SJ cables have a black, red, white, and green.  Clearly the green must be used for the grounding conductor, and NFPA 70, 200.6(A) clearly states that a grounded conductor must be white/gray, but can a conductor at line voltage be white?  (Same general question when a machine is connected to power using a similar cord and plug...)#Wire color