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I am thinking about buying a roadster and would like to know if I can use an extension cord 75-80 feet in length to get to my 220 outlet? Would there be too much voltage/amperage drop? I have 110 within about 20 feet but it seems that the 220 would be nice to have. I would be using the car as a daily driver, average driving of maybe 20 or 30 miles a day. Would 110 be sufficient for this application?