CWLee wrote:

I'm trying to determine which circuits are controlled by which circuit
breakers on a sub-division home built in Southern California in 1980. I
want to minimize the process of shutting off one circuit at a time and
then walking around checking lights and wall outlets. I'm hoping some
experienced house construction electricians can make my task easier
using the information provided below.

There are two black toggles, mechanically linked, with the label 125 amps.
220 probably main breaker

There are two black toggles, independent of each other, with the labels
50 amps.
electric range
There are two green toggles, independent of each other, with the labels
30 amps.
dryer or water heater or air cond
There is a single black toggle with the label 20 amps.
outlets
There are four red toggles, independent of each other, with the labels
20 amps.
maybe kitchen
There is a single black toggle with the label 15 amps.
lighting
There are four blue toggles, independent of each other, with the labels
15 amps.
lighting
There are cryptic handwritten letters (perhaps remnants of faded words)
like R, V, Fau, and DG next to some of the circuit breakers.

Ideas?

get a tracker, plug into outlet, take other half and find
breaker with tone. no need to turn off anything. (its a
radio signal that travels from the outlet, back to the
breaker) about $40