Currents that introduce noise or data errors in electronic equipment are considered objectionable currents in the context of 250.6(D) of the NEC. The topic of objectionable current is covered in Sec.
New in the 2002 NEC is Section 630.15 Grounding of Welder Secondary Circuit. The secondary circuit conductors of an arc welder, consisting of the electrode conductor and the work conductor, cannot be ...
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