Exactly my point, but @mavhc didn't get it. You vacuum for 10 minutes, but during those 10 minutes if your refrigerator motor is engaged suddenly your standard

Exactly my point, but @mavhc didn't get it. You vacuum for 10 minutes, but during those 10 minutes if your refrigerator motor is engaged suddenly your standard 3mm copper wires are going to become white hot and melt and you get a nice warming house fire because you didn't thought of the peak intensity. This statement assumes the 5Vcc as house power outlets.