Hi, There is a security motion sensor light on the end of the house that does not work. I'm going to replace the unit but cannot locate the correct breaker that controls the power to that light. I guess I could turn every breaker off, but I would like to know which one controls it. Since it does not work its hard to tell. How do you use a voltmeter to test such a thing without getting electrocuted? Its a standard security light with two floodlamps and a square sensor in the middle.
thx,
itchy