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Wireing a bathroom extractor fan to a three switch (fan=landing light=offswitch0

3 switches one for landing light, one bathroom light, one for extractor fan. This is all in one, the first two work o'k but I cannot get the extractor fan to switch on.Do the three have a comon live connection or do you need a separate live conection Hope you understand this Thanks

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  • Anonymous Mar 17, 2014

    when you turn on bathroom light the fan does start but the noise sounds strained until you switch the light off when it makes its correct noise for a while before turning off.

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Yes, if the three switches are all made together, then there is only one feed. sounds like a bad switch, or possibly bad exhaust fan. check voltage at fan with switch on, if not qualified, be careful, or call an electrician

Posted on Aug 14, 2008

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Wiring problem


11-1-12
Thanks for link to manual.
Solution might take more response for full clarity, and you seem a good electrician.
I have numbered two questions that may be unimportant.
Add a comment, response after 5 pm CST

Here is illustration showing Black Hot and White Neutral in attic junction box, as you described. With black-red-blue wires connected as shown in Broan manual. And each device connected to White neutral wire in junction box.
http://waterheatertimer.org/images/Triple-fan-light-night-light.jpg

You have access to attic, and can drop another cable down wall into switch box. This will give necessary total 4 wires between switch and Broan
http://waterheatertimer.org/OWB1.html

Key start point: Junction box in attic has the Black Hot wire and White neutral coming from circuit breaker box.
This cable powers the junction box.

There are 3 cables in junction box, each cable with black and white.
Cable from breaker box with Hot and Neutral. Cable going to light switch.
Another cable jumps power to next box in the circuit, and will be reconnected when finished, black-to-black white-to-white

Old light switch in wall was single pole.
1) How many cables are inside switch box? Just one cable from attic with black and white wire?
2) 3-way switch is the wrong switch, unless you mean 3-pole triple switch with 3 screw terminals on one side of device?

Here is another link that shows wiring choices if you decide to use 3 separate switches (or timers or occupancy sensor to turn on night light) instead of triple switch: Install triple box.
http://waterheatertimer.org/How-to-wire-switches.html#4-f

Oct 31, 2012 | Broan-NuTone Fans

2 Answers

Three lights and the bathroom fan stoped working on my 79 rockwood


you take the bad light bulbs up . then buy the same model lights .install them on the switch.
ceiling light

May 23, 2012 | Fans

1 Answer

How do you connect the electric to wire bathroom lights on one switch, and the fan on the other switch, The power comes in through the switch, Both switches are located in the same box


In the box, connect all white wires together, that is the incoming power, the lights and the fan.
Then take the black supply wire and connect it to the bottom terminal of one of the switches and cut and install a jumper from that terminal to the bottom terminal of the other switch.
Next connect a black wire that goes to the light(s) to the top terminal of one of the switches. When this switch is turned on, power should flow from the supply thru the switch to the light.
Finally, connect another black wire that goes to the fan to the top terminal of the other switch. This will turn on the fan.
All ground or green wires connect together and the green terminal on each switch should have a piece of green wire to connect to all the other green ground wires.

Mar 16, 2011 | Fans

1 Answer

I what to wire two lights up in garage from a consumer box in my garage do i go from box to switch first or light first,


You take a 2 conductor w/ground "romex" cable from the distribution panel, where the breakers are, to the switch box first. Then run the cable to the lights. You strip off the ends of the cable in the switch box and land the black wires on either screw terminals of the switch. Use a "twistlock" connector and connect both white wires together. Take a separate ground wire, about 6" long and twist it to the remaing ground wires. Terminate the 6" wire to the switch ground screw. At the lights, land the black wire to the black wire or dark screw, whichever you have. Land the white wire to the white wire or light colored screw. There should be a green wire from the light it will land with the ground wire.

Feb 20, 2010 | Fans

1 Answer

NEED TO KNOW from scratch,step by step,how to wire 2 exhaust fan to double single pole switch? What is the proper breaker,type of wire and do you any kind of thermostat.


hi,
okay three wires into switch box? hopefully. it will need a 25 amp breaker at the panel, remove the one in the panel and take it with you to the hardware store get a 25 amp replacement. the conduit that runs the old fan should be sufficient or use 16 gauge conduit.
okay locate your power in wire conduit with tester. now all the white neutral wires go together take the black power wires and install it to one side of the switch make a small jumper wire and that must go from the black wire you just installed to the same side of the next switch. the two black wires coming down from the ceiling go to the empty side of the switches, one wire for each switch. depending on what you want, you can use a standard 240 volt wall heater thermostat for the ceiling heater or just use a switch, since those are just mostly used for when your in the bathroom.
if you only have one wire coming down from the fan your going to have to go up in the attic and fish a new wire for the heater and night light nutone makes a special three switch setup for one box for that fan, you might want to buy that, it may come with a wiring diagram too.
any questions write me back, your setup may be different..
ground wires all go together and are green or arent insulated be careful , take time
jm

Jan 02, 2010 | Broan-NuTone N-769RF Combination Light Fan...

2 Answers

My fan does not operate.my light switch turns on light however to shut it off i must use the fan switch.Is the switch my problem.


It sounds to me like there is a wiring problem. The light is connected at the fan and at the wall switch so thats why when you turn the switch on at the wall it can be controlled at the fan as well. It sounds to me as though the actual fan motor to run the fan is not connected to the power circuit so the wiring needs to be looked at,

Nov 15, 2009 | Casablanca Fan (TRIH45) Ceiling

1 Answer

I hv a bathroom light incorporated in with the ceiling extractor


I would like to help you with this, But with out looking at the light/fan I can't. So what you can do is find the make and model of the Light/ Fan go to there website and email there tech support. # 2 go to Home Depot and ask someone that works in the fan area to help you out.# 3 If you like email me a picture of the fan/ light in four different places, and I'll be able to help you out. j-zubiate@hotmail.com. My name is Jason

Nov 04, 2009 | Fans

1 Answer

Power there but not working,it is a new bathroom extractor fan that we are trying to fit, replacing the old expelair one


If it's new you should be able to turn the blades by hand. Try that first. If you can't, the spindle might be rusted. Check to make sure the wires have live current - use a meter for that. If you have live wires when you flip the switch, and the fan blades will turn by hand, then the problem might be in the fan motor itself, in which case return it to the store in exchange for another one.

Aug 21, 2009 | Fans

1 Answer

Replace exhaust fan with fan & light?


sure just hook them both together, you wont be able to switch one off with out the other being switched off.

Dec 10, 2007 | Broan-NuTone N-LS100SE Exhaust Fan Exhaust...

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