How to wire an extractor fan to light switch

You are not logged in, either login or create an account to post comments. How to wire a bathroom fan to go on with light switch? My teens are trashing a bathroom by steaming it up until everything molds.

Learn how to wire a bathroom extractor fan with a timer to an existing light switch or new independent switch. Use this clear wiring diagram of how to connect up your timed fan to ensure you install your timer fan successfully. Don't want to do this job yourself? Let us help you find a tradesman local to you. An extractor fan is an essential part of any bathroom as it helps to remove the excess moist and humid air produced by the shower and keep any condensation build up to a minimum. In this guide we take a look at how a timed fan unit or extractor fan with a built in timer is wired up, read on to find out exactly how. Another point to be aware of is that in many installations a 3-pole isolation switch is fitted to the fan to allow it to be totally isolated from its electrical supply in the event it needs maintenance work.

How to wire an extractor fan to light switch

A shower extractor fan is essential in a room containing a shower in order to prevent condensation. This article will show how to install and wire the extractor fan. Never work on a live circuit, you must ensure that the circuit that you are working on is isolated and cannot be switched back on accidentally. Switching off the light at the light switch does not isolate the electricity to the ceiling rose or light fitting. You must isolate the circuit that you are working on from the consumer unit or fuse box! All electrical pages are for information only! New rules have been introduced for electrical safety in the home, please read this document by clicking here, before starting any electrical work. This is a shower extractor fan, this has been specifically designed for use in a shower and it also incorporates a halogen lamp which is 12 volts. Fans like this require additional wiring as both a permanent live and switched live are required as the fan has a built in timer so that it continues to extract air for a set period of time after the light in the room has been switched off. These fans are wired from the existing light in the shower area and go via a three pole switch to the fan itself. When you operate the shower room light the fan switches on automatically and switches off after a set period of time. This is the shower where the extractor fan is to be fitted. Cladding is also going to be fitted to the ceiling and so we need to plan where the fan will be fixed and then we can cut away the tiled area for the fan. I have checked the loft above and I have marked out where the fan is to be located. Here I have cut out a section of the ceiling using a plasterboard saw.

If this sounds too complex, described like that, just call an electrician to do it for you. I'd suggest replacing the fan for a couple of reasons: -- You should get a fan that is "sized" larger than the room - like, just get the most powerful fan.

Discussion in ' Electricians' Talk ' started by betj , Sep 10, Log in or Sign up. Screwfix Community Forum. I have a bathroom with a light and an extractor fan this one going into a single light switch. The extractor fan is wired so that it is always running in trickle mode, but when you hit the light switch it goes into a boost mode as well as turning on the light. I would like to change this so that I have a double light switch that can have the light on without turning the fan onto boost mode at the same time.

This article describes how mains powered extractor fans of the type often found in bathrooms and shower rooms can be wired. Extractor fans in bathrooms are frequently powered from a lighting circuit. This is because many include a "run on" capability that is triggered by the operation of the light switch, and it is not permitted to have a device powered from two separate circuits. Also UK bathrooms have traditionally not included power sockets, so it is common to not have any general purpose power circuits available in the room. Fans in other locations may be more commonly powered from a fused spur taken from a socket circuit. Kitchens are no longer classed as special locations, and so follow normal wiring practice rules. Fans especially those that may be operated by automatic controls should be fitted with an isolation switch that will interrupt all live conductors i.

How to wire an extractor fan to light switch

Home » Bathroom Exhaust Fans. Sometimes you just want the light on a separate switch so you can turn it on without making any sound. The biggest thing to consider is that you may need to route a new wiring cable from the bathroom fan to the wall switch. Keep reading to learn the supplies that you'll need, and our step-by-step guide on how to do the wiring. Probably the most important thing to know about wiring a bath fan and light on separate switches is that you will need to run a new wiring cable from the bathroom fan to the existing switch. But if you want to wire a fan and light to separate switches, you will need two hots running from the bath fan to the wall switch. For most cases, homeowners should call in a licensed electrician to do this job. Your local city or county code will almost certainly require it as well. Electricians have a lot of tricks and methods for geting new wiring cable through a wall or ceiling that the average homeowner may not know. We also recommend that you verify the power is off to the exhaust fan by using a non-contact voltage tester.

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Fans like this require additional wiring as both a permanent live and switched live are required as the fan has a built in timer so that it continues to extract air for a set period of time after the light in the room has been switched off. A wiring diagram is below using the new colour's. Step 5 — Wire up Fan Switch : Finally, connect the pull-cord switch that wil be used to turn the fan on and off into the junction box using normal 2-core cabling as with any other light switch. Learn how to wire a bathroom extractor fan with a timer to an existing light switch or new independent switch. I would like to change this so that I have a double light switch that can have the light on without turning the fan onto boost mode at the same time. Before anything is done at all the very first job is to isolate the power to the circuit you will be working on! Many thanks for all your super helpful advice and apologies for my mistake! The Switched Live generally will come from the light switch but occasionally it may be attached to a stand-alone switch purely for operating the fan. Best answer: You should consider replacing the fan's rocker switch with a motion-sensing switch. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Only if the fan and lights draw more than 15 amps combined. Finally once everything is connected up, the last job is to turn the power back on and test the circuit to make sure all is well. Tags Fan. Again, if installing a axial fan through the wall you may need to chase out a section of wall to run the cable to the fan.

Learn how to wire a bathroom extractor fan with a timer to an existing light switch or new independent switch. Use this clear wiring diagram of how to connect up your timed fan to ensure you install your timer fan successfully.

I very much appreciate all of your assistance, thank you! This is my take on it Time adjuster by turning this you can adjust how long the fan stays on for- after you switch the room light off To wire a shower fan like this you will need some three core and earth cable which is normally 1mm - although there may not be a place to connect the earth wire at the fan! It's going to be easy, is safe, and may do the trick in and of itself without spending much, if anything. You'll need to combine the wires for the fan and the light onto one switch. I've redrawn what I have with the attached diagram. This briefly covers the 2 main different types of extractor but for a full and detailed run down, see our types of extractor fan project here. Once the fan is positioned, the next task is to get it wired up. Log in or Sign up. Install shower extractor fan. Now it's much easier as you only have six wires two cables to think about. If you cannot access it then you will have to vent through one of the walls. Also, ensure that you do actually use a 3-pole isolation switch as they are much more complete than a standard switch as they isolate all 3 wires that need isolating; permanent live, switched live and the neutral. Continuous Running Fans. If you are looking at a new install, it is again worth keeping your electrician in the loop in regards to what functionality you desire so your electrician runs in the correct wiring needed.