Determining what circuit a wire is on
When our house got rewired the electrician was a bit lazy and overloaded a circuit (or at least created a circuit with the potential for overload).
I think I've found the wire that links two sets of light switches with power. (Previously one bank of switches was fed from the circuit . . . it appears he pulled power from the first bank to feed a second bank of switches).
This wire is easily accessed in our unfinished basement, so I could add a box and run a new wire back to the panel and add a circuit . . . problem solved.
But, how can I confirm which circuit this wire is on, to be sure I'm right? I don't want to cut it -- obviously if I did so I could tell at that point by wiring on an outlet or bulb. Any type of circuit tracer for this situation (I have one with the plug-in module)