This circuit must be in a GFCI outlet protected by itself from the electrical panel. Most garage door openers must be plugged in and not wired. Cutting the cable at the end of the opening unit will definitely void your warranty. I am installing an opener for my garage door and need to install new wiring to power the unit.
The unit can be wired or plugged into a power outlet. I'm leaning towards the outlet option for now, since it seems more versatile. Is it simply a matter of personal preference, or are there compelling reasons to choose one option over the other? Personally, I would prefer my garage door opener to have an electrical outlet so I can disconnect it when I need to do something with it, rather than go looking for a switch. Like a doorbell switch, a push-button garage door switch sends a signal to the door opener to raise or lower the door.
If it is not turned on, unplug the opener or turn off the same circuit breaker, and then remove the switch and reverse the two wires on the back of the switch before reinstalling it. If the garage door is connected to the electrical circuit, turn off the circuit breaker of the garage door opener, and then test the circuit by holding a contactless voltage tester next to the electrical power cable of the opener. In addition to a remote control, garage door openers usually have a wall switch wired inside the garage to open and close the door without using a wireless remote control.
