Quote Originally Posted by August Mariner View Post
Roger, Yesterday I used the 9 Volt battery trick in a building where the breaker panel was labelled incorrectly. The 9V only had to travel 15 ft at most. I found it. I am curious to see how far down the little 9V battery voltage will travel. Thanks, you don't know how often I only have 1 multimeter.
Glad it worked for you! With a #14 or #12 solid copper conductor I'd think that the 9V would be good for pretty long distances because you have almost zero current to drive that digital multimeter.