Ground Rod
- Thread starter blc62
- Start date
- Status
- Location
- Windsor, CO NEC: 2017
- Occupation
- Hospital Master Electrician
Bond the neutral to the EGC of the detached structure as allowed in 250.32 and drive the ground rod. Simplest code compliant solution.
Buck Parrish
Senior Member
- Location
- NC & IN
I am not that old but I think a ground rod or water line ground has all ways been required. I'll get my 1947 NEC book out and look it up
But as George said the 05 and before allowed for a three wire. With the EGC bonded to the neutral.
In 08 it changed to 4 wire
- Location
- Windsor, CO NEC: 2017
- Occupation
- Hospital Master Electrician
Don't bother, it predates that by half a century, I think.I am not that old but I think a ground rod or water line ground has all ways been required. I'll get my 1947 NEC book out and look it up
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
So fix it and do as George stated. The neutrals, equipment grounds and the gec to the rod all bonded together in the panel.
Buck Parrish
Senior Member
- Location
- NC & IN
Don't bother, it predates that by half a century, I think.
Thanks. I think it's at the shop any way.
It has very small writing, like the bible. It has what seems like a leather cover...
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
I know for the main service it was required to have either or when I got into the trade as far as the Supplemental Electrode Required goes, but I'm not so sure how far back when they started requiring a separate structure fed with feeders from a grounded service was required, I have run across quite a few garages without one, and was told it wasn't required back then since the service had an electrode?
Of course I'm not too keen on the ground rod doing much anyway so go figure.:roll:
Of course I'm not too keen on the ground rod doing much anyway so go figure.:roll:
I agree with George 100% as long as there are no metallic paths between the garage and the house (i assume).
Pete
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
The difference is whether the separate building is supplied via a single (incl. 3-wire) circuit that originates from the main building, or whether circuits in the separate building originate from a panel in that building.
If the separate building had an outside disco and an inside panel, the electrode(s) would have to land in the disco, and a 4-wire feeder run to the panel, regardless of whether the building supply was 3-wire or 4-wire.
Simply speaking, the separate building's supply is wired as if it was a service, with the exception of a 4-wire feeder which means wiring it like any sub-panel, but the electrode requirements remain.
- Status