STERR Grey Extractor Fan Bathroom 100 mm with TIMER Inline Extractor Fan - Extractor Fan - Bathroom Fan Extractor - Bathroom Fan

Product Information

When wired to its own switch, the switch itself will either be located outside of the bathroom, normally above the door or it can be inside as long as it’s in the correct zone and is a pull cord switch. If installing an inline fan, this will need to be positioned and screwed down to a flat and level surface, ideally between the point that air is being extracted and then being expelled. There are several types of pipework but generally it’s best to use the PVC type as when using the aluminium round duct, the fan can echo through it when running creating quite a bit of noise, whereas the PVC type is generally silent. 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. Safety Regulations for Electricity

For both different types of units they can also be tuned on and off through normally 2 different means; they are either wired into the light, so that when it’s turned on the extractor comes on also or they have their own dedicated switch, normally as an isolator outside the bathroom above the door or inside as a pull cord switch. This then enables the independent pull-cord switch to trigger the fan, and allow it to run on, in accordance with the timer setting when the fan is switched off.Once the fan is positioned, the next task is to get it wired up. A suitable length of cable is cut to run from the 3-pole switch out to the fan.

When it comes to the cable that should be used, as extractor fans are low voltage it’s possible to use 1mm or 1.5mm cable. 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.If you are installing an axial through the wall type fan then you may need to run a short section of pipe between the inner and outer sections so that it bridges the cavity as you don’t want to be pumping moist air down into your empty cavity as this will cause untold amounts of issues. Despite this, if you are unfamiliar with working on and around electricity then you are better off getting the pros in to do it for you! Wiring a Timed Extractor Fan Switched on by its Own Switch