I tend to disagree with the handbook drawing in this instance. The last sentance of 250.53(D)(2) states that a supplemental electrode must be bonded to:
1) The GEC,
2) The service nuetral,
3) The service conduit, or
4) A grounded service enclosure.

One of the electrodes in the handbook drawing MUST be called a supplement, and bonding the supplemntal electrode to the water pipe is not one of the 4 options listed above, as per 250.53(D)(2).


Ryan Jackson,
Salt Lake City