Extractor fan - not on a fuse?

[darrenh]

Guys

I noticed when taking a look at the extractor fan in the loft (fan is sat in loft and has flexy tube to bathroom) that it is wired into the lighting ring main (it comes on when the light is turned on).

IS this correct?

I want to replace it with a new fan as it is prettu unpowerful - is there a maxmum wattage I can use for this wiring set up?

In fact I was going for this:

http://www.screwfix.com/prods/41379...e-Centrifugal-Chrome-White-35W-Shower-Fan-Kit

D

 

[JohnD]

If it is supplied from the lighting circuit, then you will almost certainly find that the circuit is on a 5A fuse or a 6A MCB. Have a look.

Extractors use very little current so this is OK. I do not think you will find any domestic fan which uses more power than a couple of light bulbs, so fit whatever you like.

It is very sensible to have the bathroom extractor come on with the lights. Some people have a psychological aversion to ventilation and will not turn on a fan or open a window.

 

[darrenh]

yes it has a 6A MCB (and all covered by an RCD).

thanks

D

 

[sparkyspike]

fit whatever you like.

Not strictly true. Some 230v fans will ask for a fuse smaller than 6A.

 

[delmel]

There are so many rubbish fans, how far are you ducting it, if you want something a bit better with performance ensure its a centrifugal fan.

 

[hairyben]

There are so many rubbish fans, how far are you ducting it, if you want something a bit better with performance ensure its a centrifugal fan.

The one he posted is a centrifugal so should be OK.

Axial fans ain't worth squit when flexiduct or bends come into play, still I keep finding them with yards of duct.