[RWebb]

ok, the heater in the wall is a Cadet (hopefully, not the type of Cadet that throws out sparks and burns down your house) and it IS a 240 V unit. The outlet next to it is on 110V. Still unclear as to what the wire goes to.

I have 2 options on this:

[1] I can try to put the wire ends with the nut in a junction box (somehow - not sure if the wires are long enough) and then tear out the wall (that I just paid a guy to re plaster) to run the wires inside the wall from the wire nut area over to the heater or the outlet inside the wall.

[2] same with the J-box but I drill down into the room below, run the wires over down there and then up into the heater or outlet from below. I conveniently pulled out some of the ceiling down below last year - got bored or cabin crazy during the winter...
I have booze stored down there and have moved some of it out of the way, but still maybe a bigger job to get access if I do that (the wires will come out above some wall headers or whatever you call them (Plates?).