So i bought the Miller diversion 180 welder and i went to plug the 20a 250 volt plug into my generator and it wont fit into my generator. My generator does not have a 20A 250volt plug, it has a 50A A.C. 240volt plug which is a little bigger than the welder plug. what should i do? do i need to get an adaptor or a transformer? where do i get one of these?