> ... have to install some sort of switch ... A qualified electrician installs a "transfer" switch. It's two breakers tied mechanically so that one position

> ... have to install some sort of switch ... A qualified electrician installs a "transfer" switch. It's two breakers tied mechanically so that one position feeds the house with line power, flipping it, the other is the generator. I have one to keep my refrigerator, well and furnace running.