(1) An electric welding unit consisting of a gasoline direct connected to a DC generator. In the field the welding unit is usually skid mounted. (2) A person who uses such a machine in making electric welds. The term arc welding derives from the arc of electricity which spans the gap between the tip of the welding rod (the electrode) and the piece of metal being welded. The flow of electricity jumping the gap produces the heal to melt the rod onto the moiten area of the metal.
