These three in one fixtures work best when wired to a three function switch box allowing for individual control of the unit s functions from a single point.
Wiring a bathroom fan light combo.
Wiring a fan and light to a single switch in this wiring the source is at the switch and 3 wire cable runs from there to the fan and light.
The source neutral and ground are spliced through to the fan location.
The wiring is very weird.
Inside the box you ll need to separate the wires to see which feed the fan and which feed the light.
The easiest place to pick up the power to supply the switches will be the bathroom wall receptacle circuit.
In order for the light to be controlled by its own switch the wiring between the switch and the fan unit needs a fourth wire a red wire to carry power to the light kit.
Connect your white wires together and secure with wire nut.
Three of the.
The junction box of the original light has two romex cables coming into each side.
Connect power to both switches through two pigtails spliced to the feed wire.
If the 12 3 has been installed between the wall switch and the combo unit then because this combo unit has three.
The source hot wire is spliced to the black fan wire to hardwire it directly to the circuit and to a pigtail connecting the switch.
Connect the white wires the ground wires the black wires and the red wires together.
Electrical wiring for a bath light fan combo i have a junction box in an old house that was used to power a bathroom light.
For a fan and light switch with existing wiring splice the white wires and connect the grounds securely with wire connectors.
I would like to swap the light for a light fan combo.
How to install wiring for a bathroom exhaust fan if the power source is at the wall switch then the commons or neutrals tie together and are not switched.
You have essentially created two separate circuits within the connection box.
The wiring could then be.
Connect the red wire to one switch terminal and the black wire to the other terminal.