I am working an old home with no existing grounds in the devices, I need to install GFI's in the kitchen and bathroom and new receptacles. The inspector is questioning the grounding method. I am trying to explain the grandfather clause I need some assistance notably the GFI situation. Thank you.
No grounds Devices
- Thread starter implant
- Start date
- Status
rcarroll
Senior Member
- Location
- Fort Collins, Colorado
Re: No grounds Devices
What is your grounding methoud? What is the grandfather clause? See 406.3(D)(3)
What is your grounding methoud? What is the grandfather clause? See 406.3(D)(3)
milwaukeesteve
Senior Member
- Location
- Milwaukee, WI
Re: No grounds Devices
If you are attempting to install a grounding method, I would like to hear what that is first.
If you are not attempting to install a grounding method, then, as the 2 previous posts mentioned, 406.3(d).
Caution...
One of the listed conditions mentions installing grounded type recepts on the load side of a gfi(in an ungrounded circuit). Be careful of this where grounds are really needed (i.e. surge protectors for computers). Those ground holes on a "grounded" or should I say "groundfaultprotectedbutnotreallygrounded" outlets are there for ground fault protection only. It is best to find an approved grounding method, or bring a new wiring method receptacle to that particular location.
If you are attempting to install a grounding method, I would like to hear what that is first.
If you are not attempting to install a grounding method, then, as the 2 previous posts mentioned, 406.3(d).
Caution...
One of the listed conditions mentions installing grounded type recepts on the load side of a gfi(in an ungrounded circuit). Be careful of this where grounds are really needed (i.e. surge protectors for computers). Those ground holes on a "grounded" or should I say "groundfaultprotectedbutnotreallygrounded" outlets are there for ground fault protection only. It is best to find an approved grounding method, or bring a new wiring method receptacle to that particular location.
Re: No grounds Devices
The grounding exception for GFCIs essentially states that because of the GFCI it is acceptable to use the human body an a grounding conductor.
For the amount of labor that it takes to stick in ground wires you can just as easily stick in new romex and be absolutely sure of wiring integrity. Any house built in the Cleveland, Ohio area before 1974 NEC has knob and tube wiring. I have even seen K & T with PLASTIC insulation on the wires!
The grounding exception for GFCIs essentially states that because of the GFCI it is acceptable to use the human body an a grounding conductor.
For the amount of labor that it takes to stick in ground wires you can just as easily stick in new romex and be absolutely sure of wiring integrity. Any house built in the Cleveland, Ohio area before 1974 NEC has knob and tube wiring. I have even seen K & T with PLASTIC insulation on the wires!
- Location
- Windsor, CO NEC: 2017
- Occupation
- Hospital Master Electrician
Re: No grounds Devices
That's an excellent point, I'd never considered that combination. Without a grounding conductor that surge protector wouldn't work! Thanks for mentioning that!
- Status