hi, if i replace a two wire non grounding recept with a gfci and lable the recept plate that it has no equip. grnd..what do you do about the metal box? run a seperate ground or is this permitted without a grnd?
Ok so where do you stop? Why not rewire the whole circuit? Because you are doing a simple repair thats why. I would just replace the receptacle with the gfci and move on. I would put my but right out there and say that every single old ungrounded residential system is wired to metal boxes. The NEC makes no refrence to changing out the boxes when replacing a receptacle.
#80674 - 05/18/0211:17 AMRe: replace 2 wire recpt in a metal box
A new customer has several rental units that I'm am becoming all to familar with. All built in the 50s, all 2 wire with no ground wires. He has asked for Gfci in kitchens and baths.
Do I just replace and label no ground, or is it code compliant to fish a single #12 solid insulated green wire to a clamp on a metal water pipe. All houses have copper pipes, and these are all grounded.
This is practical where the panel is on one end of the house and the baths or kitchens are on the other. I have seen it done around here, but wondered if it was a violation to have separate parallel ground paths, I felt it was safer to have the one ground to the piping, when the entire circuit wasn't going to be rewired. And the gfci tester would see a ground and trip it out. Sometimes this is easy to do, and sometimes a run to the panel and new 12/2 w ground is just as easy. Is it worse to have this ground installed in this way, than to not have it all? What do yall think, it seems as if all these units are getting my way, and I just want to do what is it right and code compliant.
There are about 2000 homes here this age and all 2 wire without grounds and every time one sells the new owners are changing the kitchen and bath recepts out, without rewiring the hole house. Just wondered which way to go. thanks joe
Lighting the way
#80678 - 07/24/0207:21 AMRe: replace 2 wire recpt in a metal box
If you install a GFCI, there is no need to connect to the water piping. But, due to the unlikelihood that the GFCIs will be tested regularly, I would prefer to go to ground, if possible. If you do, however, you must connect within 5 ft. from where the water line enters the building. See 250.130(C)