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Q. While adding a circuit to a 1961 breaker panel, we discovered that there was no ground for the water pipe. The panel was inspected and tagged as correct in 1961, but the water pipe ground
wire has disappeared. The water system is still intact with galvanized pipe throughout the basement. Can we install a water pipe ground wire of the proper size without driving ground rods?
(May 1, 2003 Tri-County Code Forum; approved by state electrical code chief for statewide application)
A. The water system is still required to be bonded but may or may not comply as an electrode. The water pipe electrode system is required to be supplemented regardless, and, in most cases, the
electrode conductor must attach to the system within five feet of entry of the water pipe into the building. Refer to (NEC Articles 250.52, 250.53(D)(2).
Q. If a plumber changes a portion of the water system, removing the old water pipe ground, can the ground be moved to the new correct location without driving ground rods if there is a portion
that still contains all the elements of a useable metal water system for grounding?
A. See above.
(May 1, 2003 Tri-County Code Forum; approved by state electrical code chief for statewide application)
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