I'm one who will pass on that, even though I do have 3 outlets in my ceilings (the previous owner used this room as a woodworking shop). I unplug everything electrical when I'm done for the day. Even power strips. I paid waaaay too much for my machines to take even the smallest chance of them blowing up from a storm or electrical surge. I've had a machine fried with a surge-protecting power strip. No way to unplug them if they're in the ceiling.