I'm not sure of what model # the Hobart was but i do remember him saying that it was a suitcase feeder that he got the Donner parts from. And I'm trying to get hold of him to find out. But When i bought it he had a 1/0 pigtail/w tweco twist lock on it for power. It also has a voltage sensing wire, but he kept calling it a ground. Looking inside it don't look like some dummy built it. the electronics and wiring are very nicely done. but ill report back just as soon as i get hold of him. and ask him what model Hobart and what voltage it is set up for. anything else i should ask him?