This is dual voltage. Bought used. Was being used on 220 when I got it, but I needed to run it as 120 volts. Even with changing to a heavier cord, it trips the breaker. So, it seems to need 220 to run correctly. Otherwise, works (well, worked) great. Currently still wired as 120 so unfortunately can't demonstrate it running (nor do I even have a 220 outlet). I needed something immediately, so I ended up buying one that has a gas motor so this one just sits and needs a new home.