The point of origin for that wire has to be inside one of the boxes fed
by the GFCI circuit. You should be able to find and disconnect it from
inside the box.
If you don't want to go to the trouble of figuring that out then just
put an electrical box on the end of the wire and nail it up on the floor
joist. Cut the wires off if exposed and put a blank cover plate on the
box. Also staple the wire up.
You could also use the new box as a junction box and continue with new
wire to somewhere else where you might want a new outlet.
Was there a sump pump are anything like that under there?
On Jan 5, 3:25 pm, firstname.lastname@example.org wrote:
Thanks for the responses. The junction box looks like the way I'll
have to go. How do I need to ""prepare" the end of the cable inside
the box? Can I make a new cut on the end of the cable and wrap it
with electrical tape or should I put wire nuts on the ends of each
If metal box, I would put a wirenut on at least the hot (black) wire
and attach the bare ground wire to the grounding screw. You may have to
purchase the green grounding screw separately.
I like to point the wirenut up so it does not fill with dust or whatever.
If the box is plastic I wouldn't worry about wirenuts and no grounding
needed. Just strip the outer Romex cover a few inches and separate the
In either case clip any striped wires back to the insulation.
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