I din't know where to post this. Hope this the right place. In the company where I work the grounding has become a big issue. Some of the 200 & 400 amp panels and some XFMR's are grounded on the water pipe, some are grounded to a 8' rod and some are grounded to both. A new journeyman has made an issue about the grounding on water pipes. My question is what is the best and legal (In Torrance California) way to ground this panels and XTFM's. Also all of this panels do not have a ground coming from the main panel board.
To correct this I was thinking of drilling a 8' copper rod next to some of the beams with a jumper. Then removing the grounding wires from the water pipe and putting them to the beams.
