I agree with the other guys. I would get one that can be wired 110 and 220. If you should get 220 volts into your shop, the motor can be rewired to accept the higher current. Remember, an electric motor will draw 50% less amperage on 220 volts as apposed to 110 volts. Depends on how much you use it, this may save you a couple of bucks on your power bill.