Extending circuits in home without ground wire
#1
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Extending circuits in home without ground wire
Hi all,
I have some electrical projects in my house that involve extending circuits, etc. The current wiring is two wires (hot and neutral) with no ground wire. The conduit serves as the ground (I haven't found a box yet that's not grounded).
How should I extend existing circuits? Do I buy three-wire electrical lines and clip the ground wire to the box from which I'm extending the circuit? Or do I use two-wire electrical lines and continue to use metal conduit in order to have a ground? Any advice on this would be greatly appreciated.
Thanks all,
Bill
I have some electrical projects in my house that involve extending circuits, etc. The current wiring is two wires (hot and neutral) with no ground wire. The conduit serves as the ground (I haven't found a box yet that's not grounded).
How should I extend existing circuits? Do I buy three-wire electrical lines and clip the ground wire to the box from which I'm extending the circuit? Or do I use two-wire electrical lines and continue to use metal conduit in order to have a ground? Any advice on this would be greatly appreciated.
Thanks all,
Bill
#2
Many place will really frown the pratice to extend the old ungrounded circuits at all if you have to extend it you have to add a GFCI recpetale or GFCI breaker and mark the rest of the affected repectales " no equiment grounding ".
my SOP is useally just replace with new wire with true grounding set up which i do that all the time.
maybe other electricians can chime in here with additonal info as well
Merci, Marc
my SOP is useally just replace with new wire with true grounding set up which i do that all the time.
maybe other electricians can chime in here with additonal info as well
Merci, Marc
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This is rigid conduit not armored cable?
Anyway, the grounding isn't rated good enough anymore. So if you want to extend, in my mind the way is simple: use receptacles that don't include a ground plug - that's right the old fashioned ones you can't plug much into.
I'm unsure how GFCI could tie in there. It would be good too.
"No ground" sticker on three prong outlet seems rather optimistic in human nature.
Anyway, the grounding isn't rated good enough anymore. So if you want to extend, in my mind the way is simple: use receptacles that don't include a ground plug - that's right the old fashioned ones you can't plug much into.
I'm unsure how GFCI could tie in there. It would be good too.
"No ground" sticker on three prong outlet seems rather optimistic in human nature.
#4
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If you have metal conduit you have a ground. You can pull in a new green ground wire if you feel the conduit is not good enough for you.
Depending on where you live conduit may be required. Chicago is one place conduit is required.
Depending on where you live conduit may be required. Chicago is one place conduit is required.