Fan And Light Switch Combo Wiring

How to identify electrical wiring when installing a bath fan combo with a light.

Fan and light switch combo wiring.

You may have wired into a switched leg that leads down to the wall switch and returns back to the ceiling junction box location. Combination light heater and fan units can be incredibly handy in smaller bathrooms and other home areas that lack heating and cooling vents. 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. 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 line voltage enters the switch outlet box and the hot wire will connect to every switch. 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. Splice the black wire from the fan together with the black wire from the light and the black wire from the switch and cap them. The source neutral and ground are spliced through to the fan location.

Connect the white wires together in the same way then repeat with the ground wires. The combo bathroom exhaust fan circuit should be identified turned off and tagged with a note before working with the wiring and installing the fan speed switch. Using wire strippers strip an inch of insulation from the end of the black and white wires. Switch hots and line neutral will connect to a 3 wire cable that travels to the fan light outlet box in the ceiling.

When installing a bathroom fan unit it is best to use a voltage tester to identify the wiring. 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. In the attic space the cable may be run along the sides of rafters or through holes drilled. Run a length of 12 3 cable from the fan light cutout down into the wall space to the switch box cutout.

Modifying existing wiring or installing additional bathroom electrical wiring should be done according to local and national electrical codes with a permit and be. The diva fan control and light switch features a large paddle switch to turn your lights on off and a discreet slider to adjust your fan speed to your preferred level. Connect your white wires together and secure with wire nut. Ceiling fan and light switch wiring diagram.