OK, I followed the grounding thread as best I could through the stack of code quotes. From what I can tell, my panel, phone NIDs, and Cable TV are not properly grounded right now.
First, the Panel ground is an insulated 10G that runs 30 to 35 feet through to a water pipe. It's a BX armored wire and is clamped at the box although I don't think they used a BX clamp. The telco NID's are clamped to the armored cable (not the conductor) a few inches from the panel. The Cable TV ground wire runs (outside) a foot or so to the house mounted meter box where it is attached to a screw on the box.
So, can one of you Guru's tell me if this is right ? I'm thinking that I need to drive a ground rod directly outside the house from the panel and rerun the panel ground direct to the rod. I think I also need to run 10G direct from each telco NID (there are two) to the same rod. I also need to run a 10G from the Cable line to the same rod. Is this right ?
What gauge should the panel ground be ? I have 100amp service. Should it be armored ? It will need to drop a couple of feet down the foundation to reach the ground rod so should I run plastic conduit or similar for it to run through ? Or is there a type of wire that is OK outside exposed to the light ? Lastly, what type of clamp should I get to attach the telco and cable grounds to the rod ?
Thanks, Bob