Know what every breaker controls.
Build a complete circuit map for your home. Add rooms, list outlets and fixtures, assign breakers, and print a labeled panel schedule.
Panel Details
Rooms & Circuits
No rooms yet. Add your first room to start mapping circuits.
Panel Schedule
Mapping Notes & Tips
How to identify circuits
Turn off one breaker at a time. Test each outlet with a lamp or voltage tester. Write down which outlets lose power together. That group is one circuit. Work through every breaker until all outlets are mapped. It takes about 30 minutes for a typical home.
Common mistakes
- Assuming all outlets in one room share a circuit. Builders often split rooms across two breakers.
- Forgetting outdoor outlets, garage receptacles, and attic or basement fixtures.
- Not labeling tandem breakers clearly. They look like one breaker but control two circuits.
- Ignoring shared neutrals. If two breakers trip at once, they may share a neutral wire.
When a breaker trips
Check your map to see what is on that circuit. Unplug everything on it, then reset the breaker. Plug items back in one at a time. If the breaker trips with nothing plugged in, the problem is in the wiring, not a device. Call a licensed electrician.
Print and post your map
Use the Print button above to generate a clean panel schedule. Tape it inside your panel door. Update it whenever you add a circuit or change a breaker. A printed map is the fastest way to find the right breaker during an outage.
Multi-wire branch circuits
Some homes have multi-wire branch circuits where two hot wires share one neutral. If you turn off one breaker and an outlet still has partial power, stop and call an electrician. These circuits need both breakers turned off to be safe.
Labeling your panel
A circuit breaker labeling kit makes the digital map usable at the panel. Write the room and purpose on each breaker label. Match the numbers in your map to the physical breakers. Future you (and any electrician) will thank you.
Common Questions
How do I know which breaker controls a specific outlet?
Turn off one breaker at a time and test outlets with a lamp or voltage tester. Note which outlets lose power. That group is one circuit. Work through every breaker until all outlets are mapped.
What if one outlet seems to be on two breakers?
That usually means a shared neutral or a split-wired receptacle, common in kitchens. Note both breaker numbers and add a warning flag. Have an electrician verify the wiring.
Can I save my map without printing?
Yes. Use the Copy Link button to get a URL with your map encoded in it. Bookmark it or send it to yourself. The data lives in the link, not on any server.
What if my panel has tandem breakers?
Tandem breakers share one panel slot but control two circuits. Enter them as separate breakers (for example, 3A and 3B) and note that they occupy one slot in the panel diagram.
Is this a substitute for hiring an electrician?
No. This tool documents what you observe. If a breaker trips repeatedly, or you find signs of shared neutrals, have a licensed electrician inspect the circuit.