We're doing some major remodeling of our house, and this outlet is attached to the porta-potty out front, along with a panel and a few other outlets. This one is marked 240V in sharpie on the case. It *almost* looks like a 10-30, except for the curved slots and two of them are L-shaped. Plus there's that pin sticking out in the center. Since we only have 110v at our rental place, I was hoping to use this for some quick(er) charging, but can't figure it out.