Well, HATE to argue, but for giggles and GRINS, I would LOVE to see you find an URL/ website ad for any RV device, including clothes dryer that states it is for a RV and lists suing 240vac? I did research (curiosity) some months back, including larger paper RV catalogs... ditto= ZIP, NADA, nothing 240vac as a device? I will humbly apologize if I am wrong, and I have been frequently wrong, LOL