I have read the manuals for most of the popular machines. I made an error as I recall the Hobart and the Linc are both over 80 ft and the 67 I mention was for 14 on a 210 mig,,, best I can do from memory. Any less than these maximum distances will result in less performance drop, doesn't change the duty cycle but they run a pinch better with a shorter or larger wire.
On a general circuit there would be a limit of 20 on 12 but with many equipment circuits and specifically welders there is allowance for duty cycle. If you use a cable (Romex) or some cords they need to be a size larger than the minimum listed size which is,,,, for single circuit in pipe. Multiple circuits,, got to go up a size.
If this was something I had and was going to use it on a limited basis, was within 50 ft or so would use it. Since the wire you mentioned was in pipe if I was going to lean on it might pull a couple new 10 in it. 10 will even run the big migs less than wide open.
