2017 NEC. 250.53(D)(2) requires a water pipe to be supplemented, and if by a rod, pipe, or plate, they must conform with 250.53(A). 250.53(A)(2) requires a single rod to be supplemented (except if it has a resistance to earth of 25 ohms or less).
Question: Is a grounding electrode system that consists of a water pipe and ground rod considered a 'single rod'? To put it another way, is 250.53(A)(2) applicable when the grounding electrode system consists of a water pipe and a ground rod?
Its been a while, glad to see many of the same folks still here!! Thanks all.
