I am trying to install a ceiling fan in my bedroom for the first time. There is already a "Acceptable for Fan Support" box installed by the builder. I looked at several videos on youtube on how to wire fan. The wires coming from the ceiling confused me.
First, the color of wires. I see red, white and yellow. I was expecting black, white and green.
Second, red and white go back up as shown in the picture. How do I wire my fan?
Appreciate any help
Black/white/green(or bare) is standard for cables. However, any color except white, green or bare is valid for a hot or switched hot wire when using individual wires in conduit.
Open up the switch box. (If there is no switch designated for this ceiling fixture location then this is a but more complicated). Post a picture of the box - that will help.
What I expect you will see is two conduits (like in the ceiling), one with some hot color (not white or green) & white and the other red, yellow & white. Incoming hot connected to switch and to red. Incoming white (neutral) just passing through. Yellow connected to switch.
If that's the case (and if it isn't, we should be able to figure out what is going on from a picture of the switch box), then your yellow is switched hot, red is hot just passing through and white is neutral passing through. You need neutral for the fan, so you:
All the literature you have read on the Internet talks about cables in the walls installations. In that case, you are married to the standard wire colors in cables - Black Red White Bare.
Here, you have a network of piping called "conduit" and individual wires in the pipes. This is a highly competent job. The house was supplied with no fixture, but they left you enough length on the "neutral" to add one.
The wires are able to be any sensible color instead of being married to the colors built into cable. Here you have
Red is surely your "always-hot", probably because black is being used by a different circuit or half-circuit. There's too little length here to be able to reach it, so you can't use it directly. If you need always-hot here, then add a wire to that pipe from the switch, and grab it at the switch.
Yellow is your "switched-hot" from the switch to the lamp.
It's easy to add wires to a pipe.
This installation uses non-flexible metal conduit, and that is allowed to be your ground path. I have 4 buildings that look exactly like this; this is normal.
Switches and lamps can be grounded right through the mounting screws. Receptacles cannot; search for a question on "how to ground a receptacle in metal conduit" as it's complicated.
Cut the white wire at the halfway point. Splice it to the neutral from the fan/lamp.
Splice the yellow to the hot(s) from the fan/lamp.
Now the switch turns the fan/lamp on/off. Presumably speed control and lamp vs fan select is on the fan itself?
Open up the switch box. You will see a pipe leaving it with a red, yellow and white wire. Tug on the white wire and see if it moves in the ceiling box. That's the pipe!
Shoot us a picture of what's going on inside that box, and get back to us.