How many watts does a garage use?

Let's start with a typical 110 VAC service. You probably have 20 amp breakers in the service in the garage, and with at least 2 breakers, we have some idea of the theoretical electrical consumption.

Remember, Volts X Amps = WATTS, so 110VAC X (2 breakers X 20AMPs) = 110 X 2 X 20 =

2200 WATTS