a volunteer refurbished a restroom for our club and moved from the area before he completed the job.
There is a whole in the drywall and three bare wires are showing (the wire color must be on the other side of the plastic box attached to a stud.
Without take the wall apart is there a way to test the wires so I can tell which is black, white and green?
I have a micronta multitester to use.
Neil