Q. What is the internal term for the main switch?

Answer

The term given to the master switch in your home which disconnects or connects all of the house's individual circuits is the "main" or "mains" switch. In a circuit breaker box, the largest and first switch is typically the main (anywhere from 60 to 100 amps), and beneath it or to the edge is a row of smaller breakers, possibly 10 or 15 or 20 amps apiece, that go to each area of the house, such as the kitchen, the bathroom, the living room lights, or the living room sockets. The main switch controls anywhere from 60 to 100 amps of electricity.