Upgrading wiring in older homes usually includes replacing old two-wire, non-grounding type receptacles. Replacing a two-wire receptacle with a grounding-type receptacle and not providing an equipment ground or GFCI protection is a serious NEC violation. Extending a two-wire circuit without an equipment ground is also prohibited, even if protected by a GFCI type receptacle.
Refer to the illustrations and to Code sections 250.130(C) and 406.4(D) for the right way to do it.
As a CBC I am working on a 1939 home in St. Petersburg Fl. and have been told by my Electrician that cloth wiring must be replaced in order for insurance companies to underwrite. Everything we have been told is that cloth wire is allowed UNLESS derived from knob and tube (which it’s not) and that the home must be “properly grounded” but no-one will put in writing what defines “properly grounded”?? We intend to follow NEC code 406.4D
as you have outlined and Install GFIC outlets at ALL locations. Are you aware if this will comply with underwriters for insurance on a property?
My suggestion would be to install GFCI circuit breakers in the panelboard. That would provide GFCI protection for all circuits. If you choose to install GFCI receptacles, it is not necessary to install GFCI circuit breakers at every receptacle outlet. A GFCI receptacle is only required as the first outlet on the circuit, if downstream outlets are properly labeled. Then you can install regular grounded receptacles. Thanks for your question.
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As a CBC I am working on a 1939 home in St. Petersburg Fl. and have been told by my Electrician that cloth wiring must be replaced in order for insurance companies to underwrite. Everything we have been told is that cloth wire is allowed UNLESS derived from knob and tube (which it’s not) and that the home must be “properly grounded” but no-one will put in writing what defines “properly grounded”?? We intend to follow NEC code 406.4D
as you have outlined and Install GFIC outlets at ALL locations. Are you aware if this will comply with underwriters for insurance on a property?
My suggestion would be to install GFCI circuit breakers in the panelboard. That would provide GFCI protection for all circuits. If you choose to install GFCI receptacles, it is not necessary to install GFCI circuit breakers at every receptacle outlet. A GFCI receptacle is only required as the first outlet on the circuit, if downstream outlets are properly labeled. Then you can install regular grounded receptacles. Thanks for your question.
Thank-you David
Are you aware if this is acceptable with most major insurance underwriters?