>even if you don't use the water line as a grounding electrode, you still must bond the interior piping with a conductor sized per Table 256-66 because of 250-104.
Okay, thank you, yes, I agree with this.
Bill's original statement referred to a difficult to reach water main. I interpreted this as referring to bonding within 5' of entry.
If I bond to the interior piping at any readily accessible point(s) with electrical continuity with #4 copper, and I am not counting the the main (the part that is buried outside) as one of my electrodes, and my main is bonded with an inaccessible or very difficult #6 and cannot be contacted by any conductor over 50 A, do I need to run a #4 to the main itself, e.g., within 5' of point of entry, in order to upgrade to 200 A service?
