How to Wire a Bathroom Fan to an Existing Light

  1. Shut Off the Power. …
  2. Remove the Light. …
  3. Remove the Wire Connectors. …
  4. Run a Cable to the Housing Box. …
  5. Wire the Cable to the Fan. …
  6. Use a Wire Stripper to Remove the Cable’s Outer Sheath. …
  7. Attach the Black, White and Neutral Wires. …
  8. Restore the Power.

How do you wire a bathroom fan light combo?

Quote from the video:
Quote from Youtube video: The blue wire will bring power in a switched manner to the light and the black wire will bring power in a switched manner to the fan. Now i'll hook up the blue light wire to the red switch wire.

How should bathroom fans be wired?





Quote from the video:
Quote from Youtube video: So the top terminals are the supply side and the bottom terminals are the load side.

Can you wire a fan and light on the same switch?

You can install a ceiling fan with a light in a room with a single light switch with a simple wiring trick. First, turn off power to the fixture at the electrical panel. Second, remove the light fixture in the room but don’t unwire it just yet.

How do you wire a bathroom light switch and fan switch?

Quote from the video:
Quote from Youtube video: Box you can see i've written here on these wires this one is going to be going to our bathroom fan. And this one right here is what goes to the lights. This is where our power is coming into the box

Can bathroom exhaust fan be on same circuit as lights?

This is acceptable. Many bathroom fans include lights with the intention of both being wired to one switch on the same circuit. They can also be wired separately to different switches.

What do you do with the red wire?





The exact purpose of a red wire for a light fixture can vary. Except in rare cases, it is a hot wire or a switched hot wire. Check the wire with a non-contact voltage tester with the power and switch turned on. If the tester indicates the wire is hot, turn the switch off and retest.

How many wires are needed for a bathroom fan?

Wiring Considerations



Most bathroom ventilation fans use a 15-amp circuit breaker and 14-gauge wiring. Due to the increased power drawn, fans with heaters usually require a 20-amp circuit breaker and 12-gauge wiring. Use the manufacturer’s electrical specifications to confirm this.

Does a bathroom exhaust fan need its own circuit?

Bathroom Circuits



If the vent fan has a built-in heater, it must have its own 20-amp circuit. This is called a “dedicated” circuit because it serves only one appliance or fixture. Heat lamps, wall heaters, and other built-in heating appliances may also require dedicated circuits.

How do you wire a ceiling fan with a light?

Connect the green wire to your household ground wire (copper/bare wire). Connect your white wires together and secure with wire nut. Connect the red wire in the ceiling to the black wire in the light kit and the black wire in the ceiling to the black wire in the fan. Tuck the wires back into the box.

What is the red wire when installing a ceiling fan?



A red wire up in the ceiling fan junction box usually indicates that the wiring has been installed which provides separate switch for the light and a separate switch for the fan motor. If your ceiling fan does not have a light fixture, then simply cap off the red wire and attach the fan motor to the black wire.

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

How to Connect the Red Wire for a Ceiling 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.

Can I connect red and black wires together?

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 wires go together when installing a ceiling fan?



Wiring a Fan or Light Without Switches

  1. Connect the white wires (neutral wires) from your fan and ceiling together.
  2. Connect the green wire to your household ground wire (copper/bare wire).
  3. Connect the black wires together.
  4. Connect the blue wires together or the blue wire to the black wire for lights.

Which color wires go together?

See Table below. The protective ground is green or green with yellow stripe. The neutral is white, the hot (live or active) single phase wires are black , and red in the case of a second active.



US AC power circuit wiring color codes.

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