Residential two wire electrical wiring
Residential two wire electrical wiring
(OP)
I do not know if this is the right forum but here we go. A house in Dayton,Ohio built about 50 years ago and with four previous owners had some of its electrical wiring at some point in time upgraded to include a C.B. feed box.. I noticed throughout the house that some electrical boxes fitted with three prong outlets were fed with the original two wire electrical conductors and that the ground connection was thru solid bare Cu. wiring terminating at the closest water lines.
Is this practice safe, legal and in compliance with the residential electrical code?
Is this practice safe, legal and in compliance with the residential electrical code?






RE: Residential two wire electrical wiring
Bill
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"Why not the best?"
Jimmy Carter
RE: Residential two wire electrical wiring
But keep in mind that doing this work legally (with permits and all) might resulting your local inspector insisting that your grounding system be brought up to code with a ground bus in the panel and ground conductors extended to this point.
RE: Residential two wire electrical wiring
Waross, when you said to run the wires to the ground bus in the panel, are you refering to the ground wires? I think that you are but I just want to be certain.
RE: Residential two wire electrical wiring
RE: Residential two wire electrical wiring
At one time the code allowed updating ungrounded branch circuits by connecting a wire to a metallic piping system. This was long before the emergence of insulating couplings. The installation may have been a code compliant installation at the time that the ground wires were installed.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Residential two wire electrical wiring
RE: Residential two wire electrical wiring
RE: Residential two wire electrical wiring
to be replaced with a grounding-type receptacle(s)
where supplied through a ground-fault circuit interrupter.
Grounding-type receptacles supplied through the groundfault
circuit interrupter shall be marked “GFCI Protected”
and “No Equipment Ground.” An equipment grounding conductor
shall not be connected between the grounding-type
receptacles."
A GFCI breaker fits the bill, but technically you are not replacing a non-grounding receptacle. Spirit but not quite the letter of the code. Might want to run it by the inspecteo