Main breaker panels have a built-in main breaker that can shut off all power to your home. A main breaker is a large two-pole circuit breaker that limits electricity intake to protect the circuits it feeds. It also identifies your electrical panel’s amperage capacity, meaning the amount of electricity the panel can safely carry. Main breakers can be installed when the meter and feeder cable are within 10-feet of the panel. Consult your local codes to see if your panel will meet this or another requirement for proper installation.