My common sense tells me that you can not have 2 male plugs on a circuit that is tied to the same buss. I am trying to find a refference in the NEC that states that you can not install 2 male plugs onto a load bank. We have a shop here that has a load bank with 2 male plugs installed on them to run 2 different generators. They from time to time run only one generator, therefore leaving the other plug HOT and exposed since it is a male. Common sense tells me that is a no-no but I need concrete refference that I can use. Any info would be greatly appreciated.