Do you have a generator?

yes had one for years on the camper and have a 2 wire ten gauge cable with a NEMA L5-30 plug on it that plugs into the 30 amp 120-volt outlet on the generator. another end has a welding plug with the hot wire tied to both hot blades and the neutral wire tied to the neutral blade on the plug and it plugs into the welding outlet in the house. to run the house on generator we turn off the main and turn on the welding breaker then plug the cable into the welding socket. startup the generator then plug the other end into the 30 amp socket on the generator. the whole house runs on the generator and it runs everything except for the stove and the central air conditioning compressor unit. we ran the entire house on it for the month-long blackout after the derecho went through in august 2020 and the power was out for a month. the power poles were all down from the 130 mph winds of the derecho. we used it many other times too when the power was out from storms. we also use it when camping in the camper. the generator is mounted on the back of the camper. lucky gas prices were way down because of the lockdown during the china virus pandemic. it is different plugging the entire house into the generator as if it was another appliance! the entire city was dark no lights on anywhere. other cities were dark too. 😺