Black wires are hot wires that run to the electrical outlet from the switch. Red wires are hot wires common in a 240-volt outlet or when a wall switch controls the outlet. Blue and yellow wires are hot wires for ceiling fans and three- or four-way switches. White or gray electrical wires are neutral wires.

How do you connect blue and red wires to black and white?

Quote from the video:
Quote from Youtube video: You next connect the hot live wire from the old switch to the black wire on the dimmer. Connect the remaining wire that goes to the light to the red wire on the dimmer.

Does blue wire go to black or red?





You need to use a new run of three-conductor wire (denoted as “14-3” – check your local code for the specific gauge). Connect black fan wire to the black ceiling wire. Connect the blue wire to the red wire.

Does blue wire connect to black wire?

The black and blue wires need to be connected. You will be able to control your fan and lights with a single switch. You should twist the black and blue wires the same way you did the previous wires.

Does red wire connect to black or white wire?

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. Connect the white wire to either of the chrome screws (remember, they are still joined) and the ground wire to the green ground screw.

Do I connect the red wire to the black wire?

Red Electrical Wires



These wires are typically used for switch wiring as well as the interconnection between smoke detectors hard-wired into the power system. You can link two red wires together, or you can link a red wire to a black wire. Since red wires conduct current, they are considered hot.

Which color wires go together?





The neutral is white, the hot (live or active) single phase wires are black , and red in the case of a second active. Three-phase lines are red, black, and blue.



US AC power circuit wiring color codes.

Function Line, 3-phase
label L3
Color, common blue
Color, alternative yellow

What do I connect the blue wire to?

The blue wire from the ceiling fan gets connected to the second live wire from the ceiling. This second wire can vary in color but is most commonly red or black. This connection allows you to power your lights from the second switch.

Is blue wire and black wire the same?

Black wires are hot wires that run to the electrical outlet from the switch. Red wires are hot wires common in a 240-volt outlet or when a wall switch controls the outlet. Blue and yellow wires are hot wires for ceiling fans and three- or four-way switches. White or gray electrical wires are neutral wires.

What does the red wire connect to?

Red wires are mostly used to connect the home’s power system, and hardwired smoke detectors such that if one alarm goes off, all of them go off. Red wires are used in the installation of ceiling fans, where the light switches may be. Electricians can link a red and black wire or two red wires.

Does red wire connect to white?



In the US, the answer would be no, even though I am reluctant to answer this. White is not aggressive. White is neutral, black is 120, green is ground, and red is the other phase of the mains into your house.

Where does the red wire go on light switch?

Attach the white wire from the light fixture, which is now the hot wire, to the nut at the top right of the switch. Attach the red wire from the light fixture to the nut at the top left of the switch. Connect the bare copper wire to the green nut at the bottom left of the switch.

What happens when red and black wires touch?

In the US or Canada, you will probably find 240 volts between the red and black wires, but 120 volts from either one to the white (neutral) wire. DO NOT TOUCH AC POWER WIRES WITH YOUR HANDS!!

Why do I have a black white and red wire?



Black, red, white with black or red tape will always indicate a hot wire. The term “hot” means these wires carry a live current from your electric panel to the destination.

What do I do with the red wire when installing a light fixture?

The red wire is most likely a spare wire that was intended to be used when wiring for a ceiling fan. Typically when a ceiling fan is installed the red wire is most commonly used for the light and the black is commonly for the fan motor.

What is the blue wire in a light fixture?

If the light can be turned on or off from switches at each side of the room, you’ll see a blue wire that connects the electrical circuits for three-way switches. In some cases, it may run through the electrical box where the existing light is installed, but it is only a switch wire and not a wire for the light.

How do you wire a light fixture with black white and red wires?

Black wires always signify the positive, or hot, leg of the current, while white wires signify negative, also called neutral or return. Ground wires are either left bare or covered with green insulation. When there is an extra hot wire, it is red. Ceiling fixtures almost always have a black and white wire.

How do you install a light switch with red black and white wire?



Quote from the video:
Quote from Youtube video: You connect the remaining wire that goes to the light to the red wire on the. Control. Finally connect the white wire to the neutral wires in your wall.

Where does the red and black wire go on a light switch?

Basic Knowledge of How to Wire a Light Switch

  1. Black Wire – This is the hot or load wire.
  2. White Wire – This is the neutral wire.
  3. Bare Copper (Green) Wire – This is your ground wire.
  4. Red Wire – This wire is used for 3 or 4 way switches and will connect the switches together so they can each control your lights.


What happens if you wire a light switch wrong?

But here’s the catch: If you connect the circuit wires to the wrong terminals on an outlet, the outlet will still work, but the polarity will be backward. When this happens, a lamp, for example, will have its bulb socket sleeve energized rather than the little tab inside the socket.