Small Single Breaker Box. Smaller buildings can use 150 amp or 100 amp. A tandem breaker is two breakers occupying the bus space of one regular breaker.
Each breaker snaps onto the bus. It depends on how many circuits you have the existing conditions whether it s a single family dwelling multi family dwelling and the amperage of the panel. For this reason it will be by far the largest breaker in the box in terms of amperage rating.
If you re installing an afci breaker as shown on the following pages you ll also connect the neutral wire to the breaker.
It usually provides between 100 and 200 amps of power depending on the rating of the panel. Breaker amperage in a few older homes the main breaker may be rated as low as 60 amps but it s much more common for the main breaker to be rated for 100 amps 150 amps 200 amps or even more in a few very large homes. Small homes and subpanels can use as little as 50 amp. How does circuit breaker box work.
