You need a PERPENDICULAR 20 AMP outlet, SHOULD BE MENTIONED IN THE DETAILS. The plug WELL NOT fit in the plain old outlets that are 2 parallel lines with a circle as holes. You need an outlet for its plug that has 1 parallel 1 horizontal lines and the circle hole. *tried to attach photo/wont let me. Google "PERPENDICULAR 20 AMP outlet." to see images.