charlie b Moderator Staff member Location Lockport, IL Occupation Semi-Retired Electrical Engineer Aug 7, 2008 #2 Yes. The NEC distinuishes conductors rated below 600 volts from those rated at or above 600 volts. Once you are above 600, the rules apply equally to any conductor. See, for example, 300.3(C)(2)(e).
Yes. The NEC distinuishes conductors rated below 600 volts from those rated at or above 600 volts. Once you are above 600, the rules apply equally to any conductor. See, for example, 300.3(C)(2)(e).