dadiOH wrote:
wrote in message

On Fri, 13 Feb 2015 15:19:15 -0500, "dadiOH"
wrote:

"dadiOH" wrote in message

I'm working on our master bath, wife wanted a second duplex outlet
near the vanity. OK, a PITA but no problem.

My plan was to daisy chain off the existing GFI outlet, running
romex
from
it to the desired location. Problem is, the existing outlet has two
romex
cables coming into it...one is standard 12/2 (plus ground) - call it
"A" -
which is attached to one side of the outlet. The other is 12/4
romex
(with two ground wires), call it "B". One pair of black & white "B"
wires
go to the side of the duplex opposite "A"; they then are pigtailed
to
the
second pair of black & white "B" wires.

I'm guessing that romex "A" is what is feeding the existing outlet
and
that the "B" wires go somewhere - I know not where - to feed
whatever.

If I want the potential duplex to be GFI, I need to feed it from the
outgoing side of the existing outlet, correct? And how can I tell
for
sure which romex - "A" or "B" is feeding the existing outlet?

Thanks, folks. I'll take a closer look at the existing receptacle.
Also, just after I hit "send" for the OP it dawned on me that I could
just take off the wires, turn on the breaker and check. duh...
Or trip the gfi and check with the GFI tripped you would only have
power on the "line in" side.

Even easier. Thanks.

Who says newsgroups aren't useful?


Hi,
Dumb questions will get dumb answers, LOL!