Klockopotomis
Member
- Location
- Parker CO
So i have and several understandings about this-
if you do not know which GEC you will be using (rod, pipe or plate) then you use the T250.66.
However if you know that it is a rod or plate then you can use the minimum set forth in 250.66a.
Another explanation has something to do with older systems which used metal underground piping, however 250.66a doesn't just talk about "pipe" it refers to plate and rod. I do not understand the wording "that which is the sole connection". Does this mean that sometimes you have several GEC's connecting to the actual grounding electrode? Please help me with understanding only if you have an absolute fact about your understanding, I've been led down the wrong road and am frustrated.
if you do not know which GEC you will be using (rod, pipe or plate) then you use the T250.66.
However if you know that it is a rod or plate then you can use the minimum set forth in 250.66a.
Another explanation has something to do with older systems which used metal underground piping, however 250.66a doesn't just talk about "pipe" it refers to plate and rod. I do not understand the wording "that which is the sole connection". Does this mean that sometimes you have several GEC's connecting to the actual grounding electrode? Please help me with understanding only if you have an absolute fact about your understanding, I've been led down the wrong road and am frustrated.