I am looking at wiring up a 7.5 hp 230 volt 31 amp motor in my garage for a steamer. I beleive I will need #8 copper to wire it up with a 75 amp breaker. I would like to be able to plug it into the wall. What should the amperage of the receptacle be? My thinking is if I sell the place and someone decides to plug in a heater or something that it could be a problem.