Dear Mr. Electrician: I need to install an electrical receptacle outlet on the ceiling of my garage for an electric garage door opener. I do not have access to the ceiling from above as there is a bedroom located over the garage. Any suggestions on how I may proceed with this?
Answer: In a few garages where there was already an electrical receptacle installed on the wall, I was able to install Wiremold surface metal raceway to bring power to a ceiling outlet. Below are some photos of a Wiremold installation that was used to replace an old extension cord that was powering the garage door opener.
Installing Wiremold for a Garage Door Opener
There are many other types of electrical conduit.