How do I wire 14/2 cable to 14/3 cable for a hunter bath exhaust fan/light combo and a switch for each?

Question

I will be pulling power off of the 14/2 cable in the attic above the bath on the same circut (end of run that powers a vanity light, switch and recepticle in bath. I'm assuming I will need to mount a junction box - have the 14/2 power coming into the box then from there 14/3 to the fan then 14/3 down the wall to a new dual switch.

Answer 1

Your 14/2 has one nuetral and one hot wire (usually nuetral is white)
If you now need two sources of power connect the 14/3 white to 14/2 white (this carries the nuetral)
Connect the red and black from the 14/3 to the black of the 14/2
this gives you two lines of 120v each (it will not give you 240)
use one line for light
one for exhaust

Answer 2

Hunter Bathroom Fan Light

Answer 3

In a bathroom and kitchen where you have water and faucets it is very important that electric outlets, switches and fixtures be grounded. The 14/2 wire is not going to provide a ground. You might wish to connect the bare third wire in the 14/3 to a water pipe or something even if you have to run another piece of plain copper wire to accomplish this.

Answer 4

connect the white in the 14/3 to the new switch box to the common side of your fan/light switch and the other end of the white to the existing black hot 14/2 in the junction box it your attic. then use the red and black wires from the new switch for power to the fan/light. from the existing junction box pick the neutral (white) back up with the 14/3 to the fan/light.
basically you need two pieces of 14/3, one from the existing junction box to the fan/light switch and the second from the existing junction box to the new fan/light.
a ground fault interrupter is required if you are putting a receptacle within 4 feet of a faucet, sink or some other source of water and in wet/damp locations

Answer 5

I agree with the assesment by Donie. Additionally, if this light/fan is going to be located above the bath you need to put it on a GFC (ground fault circuit) There are two ways of doing this:

1. Replace the breaker in the breaker box with GFI breaker or...
2. Run the wiring to the fan/light switches from a GFCI receptacle.

Be Careful, Electricity is no joke.

Answer 6

That idea will work, however if you don't keep up with your colors in the j-box, you will have a mess...Easy fix...

Unswitched 14/2 from the hot source down to switchbox in wall. 14/3 from switchbox up to fan.
Connect both white wires together in switchbox. Black in the 14/2 will feed both switches hot..black and red in 14/3 to fan..black to fan lead, red to light lead, white from switchbox to 2 whites in fan.

This will also make troubleshooting easier, because you won't have to root around in j-boxes in the ceiling..