Extractor fan - Fused switch

if you are feeding the fan from the lights then you do not need a fuse as fans are capbable of dealing whith that current you do need an isolator that should be dual pole it should be outside of the room and out of the way i uysualy mount them above the door frame. 3 pole isolators are not fused as the are only rated for lighting circuits ie 6 or 10 amp

 

Is there a timer on the fan as a constant live has to go to the fan apart from the light switch.
there is a fan switch that is triple pole for bathroom fans.
Trip the MCB for the light in the bathroom in the consumer unit.
Ok no lights in the bath room, a touch to help/to make you safe.

Are you going to have the fan cable up throw the cealling and have a fuse fcu in the cealling space or have a fused fcu up by the fan.
Remember all fans and fcu should be well away from any part in the bathroom that has water.

 

Put the FCU just outside the bathroom door at high level, labelled FAN CONTROL SWITCH.

 

the bathroom has zones in the on site guide page 30 fig 4d supplementary bonding in the bathroom.zone two and three have areas.The top of zone two and three is 3.0 meters from the bottom of the floor the bath is on.

And the out side eage of the bath is the eage you measure the 0.6 meters to the out side eage of zones two and three.
The fan has to be out side these areas so as to comply with the on site guild.Your fcu can be as high as possible out side this area.If you can put the cable in the wall with capping over it. or us plastic conduct to run the cable in it.
Put the fcu out side the bathroom above the door or beside the door.

 

why cant it go in zone3 along side the fan

after all a standard wall mounted 230 v switch is allowed in zone 3

 

"quote" why cant it go in zone3 along side the fan"

I don't see any reason why it can't be in Zone 3, my Washing Machine is in Zone 3 in our shower/utillity room, which has to conform to the same regs as in bathrooms.

Salem

 

yes i put sockets in zone 3 as you say you have the sink and washing machine close together to reach and touch them both,But the diy,ers on this forum do not have the bible on installing and no the right heights to put things in the bathroom and zones.As you no in scotland it is deferent to england in putting in sockets as to heights.the on site guild and IEE wiring regulations sixteenth edition i have them beside me now and it is important to get things right espeshaly in bathrooms with water and steam (splashing/showers kids)to low a fcu or fan in bathroom wet hands towels not good,I only put the information out of the on site guild to make it safe for the diy,ers as it is them that are putting the electrical appliances in and not us electricians sorry for this going on so long but if every one went by the regs it would be alot safer for us going along to fix there mishaps

 

Motor Head,

Sorry you've lost me. what are you trying to say in your last post.

Salem.

 

Surely if you complied with the regs,there would be no mishaps!

 

I agree totaly.

With electricity you only get one chance, in some cases not even that.

 

Mmm, but has the OP got his answers yet?
I'd have thought that if you want a switch inside the bathroom then a pull switch would be OK for accessibility, safety and would avoid surface wiring. It would need to douple-pole to isolate a non-timer/humidistat fan. I believe standard 5amp pullcord switches tend to be single-pole so would handle the current but not isolate the fan. MK do a 15amp DP pullcord switch available at http://www.tlc-direct.co.uk/Products/MK3151.html If you want a fuse (it has been suggested that this is not required on the lighting circuit) then an unswitched fused connection unit could be positioned near the ceiling outside the bathroom to keep the exposed cabling/channelling to a minimum.
I think it is OK to surface-wire down to the fan and fcu in plastic trunking.
I stand to be corrected on all the above as ever.

[Edited by: Forum Moderator]

 

Nice to be on again.

I agree with all suggestions(but you only get one chance with electric better to be safe than in a pine box)

 

Whatever you do, do not read or try to understand MH's posts - he is a burbling, rambling idiot, and his drivel will drive you mad...

 

Thanks for that info about being mad and righting drivel ,If it was your family or friends would you not try to do all the electrics in the bathroom right,May be you are the type or person to not bother about anyone in a house or dwelling and just get on with the electrics and when someone is killed with your wireing then you have to go to the funeral of them.

 

I just noticed that my earlier reply on this thread was edited. What on earth could I have said to attract the attention of the moderator?

As for MH. I think he may make valid points on occasion. Trouble is I can rarely work out what the f* he is talking about.

[edited by poster]