Since there are a lot of different color codes it is unclear what the exact purpose of the blue wire is but you can use your individual fans wiring diagram to learn how it functions. The ceiling fan motor does not have a ground wire.
Ceiling Fan Wiring Diagram Black White Red And Green Wires
Blue wire ceiling fan. For ceiling fans without lights follow the same step. Blue wire or green wire. Find the short green wire or the green ground screw on your ceiling fan hanging. The blue wire on a ceiling fan is to control the power running to the light kit. The black wire is usually reserved for fan power only and does not extend over to your light kit. If you have a blue and black wire hanging out from your ceiling you should also have 2 switches on your wall.
Lastly connect the blue wires together or the blue wire to the black wire for lights. More about the blue ceiling fan wire. Ceiling electrical box wires ceiling fan wire. The blue wire is for the ceiling fan light and if you do not have a separate switch wire for the light then the blue attaches with the black wire for the ceiling fan motor. While you should read the instructions on your new fan carefully to be sure the convention is that the black wire is a power supply for the fan the blue wire is a power supply for the light the white wire is neutral and the green wire is a ground. Without connecting the blue wire on your ceiling fan to a power source you will not be able to control your lights.
The white wire is your neutral wire the copper wire is the grounded wire and the black wire powers the fan. The black and blue wires are called hot wires because they hold electrical current. This wire is commonly red or blue but almost always has a tag on the wire that reads light. Connect the white wires neutral wires from your fan and ceiling together. Black to black ceiling fan motor black also to blue ceiling fan light white to white shared neutral ground to green ground wire with these wiring connections the ceiling light can be operated from the ceiling fan pull chain or the wall switch. The blue wire is the hot wire for the ceiling fan light fixture.
Connect the green wire to your household ground wire copperbare wire. Some ceiling fans will have a black and white stripe colored wire that is to be used for the light fixture. Finally connect the red wire from the electrical box to the remaining wire from the ceiling fan. Connect the black wires together. What is the blue wire on a ceiling fan. This will allow you to add a light kit later on without having to rewire the fan.
Another important wire is usually a green one which is used to ground all the systems of the ceiling fan. Typically youll see black white blue and green wires inside a ceiling fan.