The generator connects to the transfer switch with a thick, heavy-duty cable called a genset cord, which is plugged into an outlet receptacle installed on the outside of the house (that receptacle is officially known as a power inlet box).

When hooking up a generator to your house?

Transfer SwitchesConnect the generator to the transfer switch using a gen cord.Start the generator outside.Flip the main breakers in the transfer switch from Line to Generator power.One at a time, turn on the circuits you want to power.