How To Install A Ceiling Fan

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Hi, I'm Chris from Aspect Maintenance, an electrical company based in the centre of London. Today we're just going to have a quick look at a 4 inch extractor fan that you'd find in any domestic bathroom. The one we've chosen is this brand here.

The switched live, neutral and permanent live - that lets you know that this has a run on timer in it so the fan will energize when you flip the switch and then when you turn it off at the switch it'll run for either 30 minutes, 15 minutes or 5 minutes depending on how you put the settings. We'll just take a closer look, just pop it off there. You see there, the 3 connections that line up with this.

So what you'll do there is you'll wire this from a light switch, break it through a fan isolation switch outside the bathroom - it's part of the regulations - then take the switched live which comes from the light switch to this first connection. Then you'll have your neutral in the middle which obviously allows it to work. Then you'll have a permanent live, you want this coming out of the common side of your switch outside the bathroom.

This will always be live, no matter whether the fan is on or not, and what it does is it allows the fan to have the power to run on for the extra 5 or 10 or 15 minutes just to clear the bathroom of any moisture. This is the cable that you're going to be dealing with - a 1.5 four cord cable.

So here it is. You'll have your live switched, you'll have your common, you'll have your neutral - you'll have your neutral there sorry - and you'll have your earth there. What you want to do with these is you want to tape these up just to identify them a bit better when they're connected.

That's how to connect a 4 inch extractor fan in a bathroom.