Me and my friend john were up on the catwalks changing the lamps on some 6" Fresnels. We finished it up and went to plug an extension cord in. It was 12/3 gauge and bout 7 feet long, with stage plugs. We plug the male end into the socket on the baten and he goes and picks up the female end. Well we didnt know that the Hot and neutral wires had uncrimped and come off. He picks it up and they touch and flames and sparks shoot out and he drops and I jump back. Once it hit the ground it stopped. We unplugged it and took it apart and realized what happened. Needless to say now we are checking every single cord we have for that problem. Now we check all of our cords when we go to plug them back in. Thank god he was holding it by the plastic part and not anythign else. I'll try to get some pics if I can.