- Location
- New Jersey
- Occupation
- Journeyman Electrician
If the grounding electrode is a water pipe, the gec must be sized to 250.66 and a supplemental electrode must be installed (rod,pipe,plate) sized at #6.
If the ground electrode was a CEE it does not have to be larger then #4cu.
Would a CEE require a supplemental electrode?
If the electrode was building steel, the gec would be sized to 250.66.
Does building steel require a supplemental electrode?
Ground ring??? Not smaller than a #2. Again, would it need a supplemental?
SO? Water pipe is sized to entrance conductor size but would still need a supplemental?
Made supplementals not smaller than #6 and would need supplementals not smaller than #6?
The only "real" "non supplemental electrode would be metal frame of building structure and ground ring. Building structure would be sized to 250.66 and ring doesn't have to be larger than #2....and both would not
need a supplemental?
(reading on the ground ring..... not smaller than #2.......would that #2 be sized to go back to bond/ground, or would you have to hit the #2 with a gec sized to 250.66?)
Is any of what I wrote correct???
The only electrode that requires an additional supplemental electrode is the metallic water pipe electrode. No pipe then only one electrode is required.