Change No. 6: Section 250.66 (Sizing Grounding Electrode Conductors)
The text of “sole connection” for rods, pipes, rings, and concrete-encased electrodes was clarified. Except as permitted in (A) through (C), the grounding electrode conductor must be sized in accordance with Table 250.66 (see Table 1). (A) Rod. If the grounding electrode conductor or bonding jumper connects to one or more ground rods [250.52(A)(5)] and doesn’t connect to another type of electrode that requires a larger conductor, the grounding electrode conductor ...
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