Ryan_J, I believe the total lenght of this circuit is roughly 300 FT. The EC lead man is saying that 1/0 is fine and they could have gone with a smaller EGC. I think he's using 250-66, but that art. is for sizing the grounding electrode conductor, is there any way someone could use this table to size the equipment grounding conductor. Beside they are two different conductors. Does anyone believe this may be the case. I believe 3/0 is what is needed according to 250-122, can anyone disagree with that. Or how should I go about letting them know how they should size an equipment grounding conductor?