Smaller buildings can use 150-amp or 100-amp; small homes and subpanels can use as little as 50-amp. Double-pole breaker Uses the entire 240 volts available to the panel.

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 ...