How to wire an extractor fan to light switch

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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. At present, I have two wires going into COM, and two wires going into L1 the blue wire doesn't go into the switch.

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.

Step 2 — Install Isolation Switch if needed : The supply for such an appliance can in most cases be taken from most existing circuits, both lighting and sockets, providing a fused connection unit FCU is present at the start of the installation and appropriately fused to protect the sub-circuit cabling and accessories. I assumed one pair was for the light, and the other pair for the fan, is that not the case?

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.

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.

How to wire an extractor fan to light switch

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.

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I was just in the Depot looking at fans yesterday. The humidity detecting switch or a humidity detecting fan is the real way to solve this problem. Learn how to wire a bathroom extractor fan with a timer to an existing light switch or new independent switch. The fan is a separate fixture - it is not a fan with lights. Perhaps you meant that the ground wire is missing. Please read the article on safe isolation procedures before doing any electrical work. As we have stated above, if an extractor fan is being installed from scratch then this will need to be done by a qualified Part P registered electrician. Before you drill this hole ensure that either yourself or someone else can get to the soffit from the inside of the loft in order to connect the vent pipe to. Drama-free home automation like this is kind of great. As with all electrical work, before anything is done at all, make sure that the circuit being worked on is fully isolated in the fuse box or consumer unit.

Discussion in ' Electricians' Talk ' started by jhs2zz , Jan 23, Log in or Sign up. Screwfix Community Forum.

See our core drill project here for more information. Mmm, yes I'll have a think about that one. However is you are simply replacing an existing broken unit then you are able to do this yourself. New rules have been introduced for electrical safety in the home, please read this document by clicking here, before starting any electrical work. You must isolate the circuit that you are working on from the consumer unit or fuse box! The supply for such an appliance can in most cases be taken from most existing circuits, both lighting and sockets, providing a fused connection unit FCU is present at the start of the installation and appropriately fused to protect the sub-circuit cabling and accessories. Also, for timed unit extractor fans, as there is an extra cable you can use 3 core and earth, however if wiring a standard fan with no timed switch, 2 core and earth is fine. Back Heating. Sometimes the neutral is on the other side of the load; or the hot is on the other side of the load and you don't have a hot. Best answer: This is a common problem. So at least check for that. Toilet Fans. The drill can bite and will slip from your hand in an instant, so be aware and be ready not to let go of it. Is the suggestion to move one of the L1's into a COM? It turns out there is a neutral - I was mistaken about that.