If you have the time and the wherewithal to compose a detailed circuit breaker panel directory you should do so. It can come in handy when you are troubleshooting a problem or just want to know exactly which breaker to open to replace a receptacle or switch. Before working on a device you should also check it with a voltage tester or multimeter to insure that it is not electrically energized.

I also write the breaker number on the outlet/switch faceplate with a Sharpie. It's hardly noticeable if you place the number near the faceplate screw.

Breaker #1 _ 15A

After determining the function of a switch or receptacle you can make a note of it for yourself or the next owner.

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Breaker #2 _ 20A

I have two permanently installed GFCI devices. The GFCI in the kitchen protects all of the receptacles on Breaker #2. The GFCI in the garage protects all of the bathroom receptacles as well as two of the outdoor receptacles and one of the garage receptacles on Breaker #4.

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Breaker #4 _ 15A

Receptacles in garage ceilings (for forced air units [FAU], garage door openers, etc.) generally do not require GFCI protection because the receptacles "are not readily accessible." It's nice to know which breaker to open when you have to replace the sensor for the garage and mailbox pillar lights.

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Breaker #6 _ 15A

It's nice to know the output (secondary) voltages for the two transformers that are located in the attic before you have trouble with their operation.

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Receptacle Voltage

If you have a way to determine the receptacle voltage - you should do so.

bob@infoforyouand.me