I can hang and install ceiling fans all day when there are these wires coming from the home: black, white, and green. No problem.
Where I get all screwed up and have to pass on the job is when there happens to be a red wire in the mix of the other three.
I had a "while you are here could you...." hang a fan for me. I said of course. I had just built a $5400 deck for them.
Well I found the fan had a white, green, black and a black and white. The home had a green, black, white, and red. I hooked up the green to green, black to black and white to white and black and white to the red. Nothing happened.