I have breaker that is 20 amps and is a 12 gauge copper wire that leads out of the box. Somewhere along the line in my upper crawl space it connects to a 14 gauge copper wire? What is the best way for me to find out where this connection has been made? Yes?
I have checked my whole house when I been replacing receptacles and switches and even the junction box except for the upper crawl space. What is the best way to trace this type of problem. If you used a multimeter it won't tell you if the gauge of wire is 14 or 12? Is there an instrument for tracing this kind of problem and identifying where the two 14 and 12 copper gauge wire meets--if not what would you suggest. Yes getting an electrician would be last resort but besides that I'm curious on what you guys and gals do when this happens. I'm sure it has to be a wire nut connection somewhere in the upper crawl space. This connection happened some 7 years ago when I had a new box installed but never checked the labeling until recently. This particular breaker actually connects to bedrooms and some hall lights. Thank u Larry