A 200-amp breaker is appropriate for a home upwards of 2000 square feet. Smaller buildings can use 150-amp or 100-amp; small homes and subpanels can use as little as 50-amp.

How Sub-panels Work All homes with electrical power have a main electric service panel, sometimes called a circuit breaker board. This panel transfers electrical power from the main outside power ...

This is why people get scared of fuses. A typical 60 amp fuse box might have one 240 volt circuit for an air conditioner or electric range, plus four more fuses for the rest of the wiring in the home.

The Smart Budget kit will include two 30-amp single-pole circuit breakers, which Savant calls “Power Modules,” along with a double-pole 60-amp one and a current tracker for circuits you only ...