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There are several different types of extractor fans available, Kitchen extractor fans normally incorporate a cooker hood and are used to expel cooking smells and steam outside. Bathroom extractors are used to expel large amounts of condensation which is often caused by a shower.

 

 

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

 

Before working on any electrical circuit you must ensure that it is isolated correctly and cannot accidentally be switched back on. Please read the article on safe isolation procedures before doing any electrical work. If you are not 100% certain what you are doing call a qualified electrician. Building regulations are changing all the time and modifying your home electrics could be against new rules and could invalidate your home insurance, if in doubt check first!

 

extractor fan wiring

A normal cooker hood would be wired up like the diagram here, there will be a switched Fused connection unit leading to either a junction box or directly to the cooker hood. The cooker hood normally comes supplied with a good length of flex which can be connected to the junction box above the ceiling. The wire and the 4" ducting pipe is hidden by the extractor chimney which leads outside, although you can get extractors with charcoal filters which simply filter the air.

Kitchen extractor fans/hoods should be wired into the kitchen ring main via a fused, switched connection unit.

Kitchen extractor fan

Here you can see that instead of the wire being concealed in the Hood chimney it runs along side the extractor and to a fuse switched connection unit above the kitchen units.

 A shower extractor fan is wired much differently as there is often a switched live wire to enable the extractor fan to run for a set period of time after the light is switched off- Install shower extractor fan

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