If you change a light fixture and find a red wire in the electrical box chances are the black wire from the fixture needs to go to the red wire in the box. This type of switch lets you turn the light off or on from more than one place in the room.
How Do I Connect A Light To A Switch When The Light Receives
Red black white wires. Being the main hot wire the primary function of the black wire is to provide current to the fans motor. White wires with black or red tape. You can now screw the outlet to the box and proceed to the switch box. This wire is always on so make sure that there is no current when dealing directly with this one to avoid any injury. This is a typical wiring setup for a 3 way light switch with black white red and ground wires. Connect the white wire to either of the chrome screws remember they are still joined and the ground wire to the green ground screw.
The white red and black wires in an electric ac motor supply power to the motor itself and determine which of the speed coils turn on when electricity is supplied. A three way switch is different. Electricians often use black red or blue wires to deliver electricity to a circuit from the main panel. Hot when a white wire is augmented with a red or black color marking this often indicates that it is being used as a hot wire rather than a neutral wire. White wires augmented with red or black tape or markings are used as hot. If it doesnt work switch the lower wires.
Attach the black wire to the outlet you want to always be on usually the top one and the red wire to the switched outlet. However a black wire can never be used as a neutral or ground wire or for any purpose other than to carry a live electrical load. In almost every motor design the white wire will be the neutral. They may use other colors for. Normally youll see a red wire in places you would expect a ceiling fan. The different colors of electrical wires indicate the function of the wire with black and red indicating the wires carry electric current white usually indicating neutral charge and green indicating the wire is grounded.
Regardless of output setting power will be applied to this wire. The colors regulated by the national electrical code in the united states are standardized for safety. The white wire of the ceiling fan is the main neutral for both the light fixture and the fan motor. The white wire is the neutral and all other colors are hot. When measured with respect to the white neutral wire the red wire carries the same 120 volt current that the black one carries making the voltage across these two hot wires 240 volts. Typically this is indicated with a band of black or red electrical tape but other colors may be used wrapped around the wires insulation.
One of the hot wires attaches to a brass terminal on one side of the outlet and the other attaches to a brass terminal on the other side.
Gallery of Red Black White Wires
