This weeks post is about a practice that I’ve seen done out in the field and even required by inspectors. Running a bond wire from your pool’s steel cage to the ground rod is not an acceptable practice which when I found it in the field the contractor told me that they were required to do it by an inspector in another municipality. So if your inspector requires you to bond your pool to the ground rod at your service you can now show them where in the Code book it states it is not allowed. That “Bond” from your pool’s steel cage goes to the pool motor bond lug on the outside of the motor not to the ground rod. The pool steel is the new part of this section the Aluminum, and the gas piping have been here for a while.
250.52 Grounding Electrodes. (B) Not Permitted for Use as Grounding Electrodes.
(3) The following systems and materials shall not be used as grounding electrodes:
(1) Metal underground gas piping systems
(2) Aluminum
(3) The structures and structural reinforcing steel described in 680.26(B)(1) and (B)(2)
Till next time be safe work safe
Jake