You're on the thin end. I might try it once or twice to see how it starts, while checking the voltage at the machine with a multi-meter.
240V would be much better. Less current, and half the v-drop. Your motor may be able to be re-wired - check the nameplate. I use a 30' #12 extension cord with my 3hp machine as needed (nema 6-20 ends).
EDIT: I know it would be a PITA, but if its not a huge job, run the machine back and forth to the shop a few times to charge it up. Or if not a huge-volume tool... run a longer air hose instead.
240V would be much better. Less current, and half the v-drop. Your motor may be able to be re-wired - check the nameplate. I use a 30' #12 extension cord with my 3hp machine as needed (nema 6-20 ends).
EDIT: I know it would be a PITA, but if its not a huge job, run the machine back and forth to the shop a few times to charge it up. Or if not a huge-volume tool... run a longer air hose instead.
