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Posted by PipeDown on May 15, 2006, 4:25 pm
Use of a single GFCI or a GFCI breaker does not solve the problem of not
having a ground wire in the first place. If you use a GFCI receptacle and
connect several receptacles downsteam, you will get some GFCI protection but
not from current into ground (the ground tab on those will still be open).
Only at the GFCI receptacle itself do you get virtual safety ground
protection.
> That is pretty reasonable advice with one exception: Where the 3-wire is
> actually needed, such as for computers, stereos, etc..
>
> Further: You don't need a GFCI at every location: You only need one per
> circuit, placed in the right location, meaning the receptacle which
> physically connects to the fuse/breaker box. Then that receptacle and all
> those beyond on the same circuit are protected.
> You can also buy ckt brkrs with gfci functionality, along with arc
> suppression and detection. IMO that would be the most desired from a new
> buyer perspective. Don't be too surprised if the lack of a third wire
> hurts some prospects, though.
> If you're in doubt about anything, it's easy to just call your local
> code enforcement office to get details: Every locations adds its own laws
> and rules to the mix.
>
> Pop
>
>
>> Your simplest option is to put a GFCI receptacle in every location. It
>> may not sound cheap but the alternative is replacing the 2 wire cable
>> with 3 wire cable. Not really practical unless you are already doing a
>> gut and remodel.
>>
>> There should be a sticker that comes with the GFCI to alert users that
>> the plug is not really grounded. It does provide protection as it will
>> trip if any current flows into the ground tab.
>>
>>
>>
>>> I'm preparing my mother's home for sale. It was built about 1953 and the
>>> wiring lacks the usual third ground conductor. To make it possible to
>>> conveniently plug in stoves, refrigerators, and power tools with
>>> three-wire cords, my father simply replaced two-wire outlets with
>>> three-wire ones, leaving their ground lugs disconnected.
>>>
>>> At this point, every switch and outlet in the house is worn out,
>>> paint-covered, or installed up-side-down, so I plan to replace all of
>>> them. I started out intending to turn the clock back and replace all the
>>> outlets with two-wire ones, but it appears that I can't even buy them
>>> any more. Certainly the local HD doesn't have any.
>>>
>>> So the question is whether there's a proper way to connect a three-wire
>>> outlet to antiquated two-wire cable?
>>
>>
>
>
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