I'm correcting the PO wiring for the input power cable wiring on my old Miller Spoolmate 200 (same power supply as MM200) but I've got a question. It's pretty obvious where the two hot wires go but since the machine only used two conductors back in the day and my garage is wired to current code which should I hook up in the machine...neutral or the ground or does it matter? Whichever I go with will be attached to the unit's chassis and the other will have to be capped and stowed. Both the ground and neutral are the same bus bar in my panel. My rationale and let me know if I'm incorrect would be to use the neutral since the conductor to the panel is larger (6/3). Fill me in so I can get the wiring sorted out and start burning metal.