alluminum with I-rmig 140e

[TheGary]

I am sure a spool gun will work off the + Dinse port. I think Everlast uses the Mig gun port for all their spool guns. Rather than have one specially set up for the MTS welders they just leave it on the mig port to stream line their products. I has to be electricaly the same because you have to put the work clamp in the + terminal to run flux core wire when you reverse the polarity at the mig gun connection.