The premier power welders are pretty cool, it produces a high frequency while welding that makes a very smooth arc. I would contact Greg at Premier Power Welder and ask him your questions. I have never tried my welder with my flux core wire feeder (lincoln LN22) I used to run it off of a 400 amp hobart DC welder. Since flux core requires straight polarity, you can not use straight polarity on the vehicle that the welder is mated to, but it should work for equipment repairs. My alternator on my 4.0 engine for the welder is a 195 amp and it can pull the engine down pretty good, you are limited to a certain amount of time of welding before switching the welder off to allow recharging of the vehicle battery. It is a pretty cool set up and my only stick welder since I sold my gas powered hobart and replaced it with a Hobart Mig for in the shop.