Some municipalities require that openers be hard-wired directly to circuit breakers.
All openers must be mounted at least 7' off the floor. Check your local building codes and have the appropriate wiring installed. The openers weigh 40-50 pounds and produce torque as they lift and lower the door. To prevent the opener's motor head from vibrating loose and falling to the floor, its mounting bracket must be fastened securely to the framing of the garage. If no appropriate framing exists where you intend to mount the opener, you might need to add some secure framing.