I don?t understand what you?re trying to accomplish? You?ve got a vacuum and you want to add a third motor to it, Why? If you add a third motor and a switch to start the third motor are you going to charge more for the time that the third motor runs? All of our vacuums are 3 motor vacuums and they are on a 30 amp breaker, they are all wired with #10 wire. Why don?t you do it right add a 30 amp breaker and rewire that circuit with #10 wire from the breaker panel to the vacuum island. Being in property management you can?t believe the haywire electrical work we?ve seen, most of it is down right dangerous. If you can?t do it right the then call someone who can. You wouldn?t believe the mess this car wash in when we took it over, it was a electrical nightmare.
