You can use any and all on the list if you want.
My point is the use of the word MUST.
Unless you are there while the foundation is dug, or while the water pipe is being installed, or if you decide to dig down 3' and at least 10' long to prove the water pipe actually meets the critia, you can't use it...
So why use it, unless you can prove it.
Also, the water pipe is the only electrode that MUST be supplemented by at least one of the others on the list. The only one that the code calls out to be supplemented.
I went to Mike's bonding/grounding course a while back and asked the same question to him, after a decussion we had on the same topic a while back, and I got hammered by some of you guys about this.
After searching and thinking about this, he concluded the same thing I am stating here.
It is a technical thing with regards to using the word MUST.
It doesn't really say that you MUST use it as a GE. It only states it MUST be supplemented, and it shall be bonded to the GES.
2 ground rods constitute a GES, then bond the water pipe to it, that way you don't have to prove or dig.
Dnk....
[This message has been edited by Dnkldorf (edited 01-16-2006).]
