Here are a couple of ways you can trace down existing electrical wiring circuits.
You could spend a lot of
money on circuit tracers and there are low cost methods as well.It all depends on your location and needs. One of
my favorite's is shown here in my YouTube video.
I like the ease of use and portability.It can be used in a light fixture that uses
standard A-19 lamps,outlets and on exposed wires. Also you can use this style tester by yourself saving trips back
and forth between the breaker panel and the area your working on.
A.W. Sperry CS550A Circuit Breaker Finder Next up is a tool I use for tracing known "dead circuits".
PRO3000 Tone & Probe Kit
This can be used
on phone,cable tv,and computer cabling as well.I like this one because I can find buried wires in
walls,cabinets as well as the dreaded attic and crawl spaces.You have to remember that this tool is designed
for tracing low voltage application but you can use it if your 110v circuits are dead.If you hook it up to
110v you'll blow up the transmitter. Other methods require a helper.You can use the old yell back and forth to
each other or you can use
2-way radios .
These radios are great when working with 2 people that may be out of yelling range or in a quite setting like a
doctors office where screaming out "is that it" is not practical. One more method you could use in two ways
depending on you environment is to use a music radio plugged into the outlet you are working on. You could
plug the radio in and turn up the volume,if conditions are right, or you could run an extension cord to get
the radio closer to your panel when searching for the right breaker. Very rarely do I go on a service call and
find a perfectly marked panel let alone enough information to shut off the correct circuit.Therefore we must
use the proper method to find the breaker to work safely on the circuit.