How to Wire an Extractor Fan

What You'll Need
Circuit Breaker
Electrical Wire
Circuit Tester
Electrical screwdriver

Wiring an extractor fan is not a task that most people will feel comfortable doing themselves. However it is something that most people are capable of doing. With just a basic understanding of electrics and a good sense of safety, you really shouldn't have a problem wiring up these extractor fans.

Wiring up an extractor fan is a very easy process and if done safely you will be able to avoid any potential hazards and accidents which can sometimes occur. Spend time carefully wiring up the extractor fan and make sure that you don't cut any corners.

Step 1 - Safety

Whenever you are working on electrical circuits in your home you must ensure that they are switched off. Electricity is very dangerous and must be treated with respect. Turn the power off at the circuit breakers so that you can be sure that you won't accidentally electrocute yourself.

Step 2 - Routing the Cable

The extractor fan will need an AC power supply, if you are replacing an existing fan then it should be possible to use the existing connections. If not then you will need to chisel a channel right the way along the wall to a socket or wherever you an break into the circuit.

Once you have a channel in the wall you will then need to lay the cable in it. Use shielding to protect the cable properly.

Step 3 - Filling the Channel

Now the channel needs to be filled up with plaster, this should then be sanded back to the same level as your wall. Spend time doing this carefully so that you can hardly notice the repair, all you will need to do is paint the walls once you are done.

Step 4 - Connecting the Fan

Strip the ends of the wire and screw them into the fans terminals. Make sure that you use color coded wires so that you know which one is live and which is neutral. Although it will work either way, it's very important that you always switch the live and not the neutral.

Step 5 - Connecting the Switch

The fan then needs to be wired into the switch which will control when it is turned on or off. Depending on the type of fan you have you may wire the switch in series with the fan, or for more complex fans which carry on running for a certain length of time after being switched off you will wire it to the fan itself.

Step 6 - Connecting the Power

Now connect the power to your fuse board while the power is still turned off. Ideally the extractor fan should have its own circuit breaker because it's in a damp room of the house which is quite dangerous. Screw up the terminals tightly to ensure the wire is trapped properly.

Step 7 - Testing

Now you need to turn the power back on and try the extractor fan out. Pull the cord and check that the extractor fan comes on and is blowing in the right direction.