If the OP really want a circuit tracer, spend some real money and get
http://www.tasco-usa.com/ . They in fact build the Greenlee model the cool thing
about the Tasco model is that it states which circuit it is at any reading from the
probe, I don't believe this one little aspect comes with the Greenlee model. I can't remember if it's a live only system or dead or alive. Models come with 24 or 42 probes.
it's live or dead, either one.
i bought one used this weekend off the for sale forum here.
the thing is freaking awesome. it had been sitting on here for most of a year.
gotta remember to check that from time to time.
you pull the panel cover off, and clip on a little ct on each branch circuit
and plug it into the circuit number. there are 42 ports on my unit. then
you turn it on, and walk around to each plug, light, or whatever else you
want to identify, including wires in a condulet, gutter, or anywhere else.
then you take the receiver, and put it next to the wire. it tells you what
the circuit number is. no walking back and forth, zip. you can map an
entire building with this, quickly. i just did a small office in about 20 minutes.