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
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 ?