When we remodeled our basement, we wanted to move a switch that controls 4 lights. Here is what I think happened: The electrician spliced in a single piece of romex, so that the black wire runs to the new switch location, and the white wire runs back and connects to the other end of the cut black wire.
The wires are not marked, but it seems unusual to see a SP switch with one white wire and one black wire, coming from the same piece of romex?
I attached a tracer/tone generator, one lead to each wire - nothing. I attached the red lead to the "white" wire, and the black lead to the ground - nothing. I then attached the red lead to the "black wire," and the black lead to the ground - nothing.
Thoughts?