Bathroom extractor fan

[Jordan froud]

Installing a extractor fan from a light fitting
Any help would be appreciated

 

[buzzlightyear]

considering that fan is a timed ,you need to get a spark in to know what they are doing,

 

[Gavin John Hyde]

Agree with @buzzlightyear get a local electrician in. If you want the timer function to work properly you will need 3 core and earth (although the earth is tucked up and not used at the fan) it is not an excuse to use it instead of the proper cable required for the timer.

 

[suffolkspark]

get your cpc (green/yellow) connected in at the light and put in its own connector in the fan.
you then need a link between terminal 2 & 3 in the fan.
as others have said the timer function of the fan wont work... but it will at least come on and off with the light.... get an electrician if you want it to work properly

 

[telectrix]

also the connections in the light are shocking ( pun intended).

 

[Christopher Bernard]

This is also notifiable, since it's a room containing a bath or shower (assuming this is a dwelling).

 

[telectrix]

Don't forget that this is also notifiable, since it's a room containing a bath or shower.

if there's both a bath and a shower, does it need to be notified twice?

 

[buzzlightyear]

This is also notifiable, since it's a room containing a bath or shower (assuming this is a dwelling

it depends which zone it in .

 

[westward10]

Notification is only required by the fee paying chosen few whilst the rest can just crack on with it.

 

[WillWX]

Don’t really get what help is needed, looks like you’ve already done a sterling job installing it, enjoy

 

[Sw33tnuff]

Do get an electrician in to get this done correctly with the right cabling.

 

[Loki]

Personally I would advise you get an electrician in to do the work as they will have the knowledge, experience & test equipment required to do the testing etc . You will also get a Minor Works Certificate issued by them.

As previously mentioned locations containing a bath or shower are classed as a special location & are notifiable works if they are within certain zones in a dwelling.

https://www.tlc-direct.co.uk/Technical/DataSheets/Firstlight/Zones.pdf

If the fan in your photo is higher than 2.25 meters off the floor then it's outside of the zones & is non notifiable work.

Also although not specifically mentioned in the BS7671 is the installation of a 3 pole isolation switch for maintenance purposes which is probably mentioned in the manufactures instructions.

 

[Des 56]

The light fitting with the connections in the picture has a switched live
The fan requires a permanent live,a switched live and a neutral
A permanent live may be found at a junction box for the lighting or at a light switch

The fan also has a humidity sensor, although it can be made to operate with what you have connected (put a wire loop between the live and switched live connections) it loses most of its useful function

 

[Octopus]

Wonder where it's vented to?

 

[Carnegstar]

Sleeve and identify the earth core in that flex.. BROWN-LIVE.. then connect it to the switched terminals in both light and fan

 

[suffolkspark]

Sleeve and identify the earth core in that flex.. BROWN-LIVE.. then connect it to the switched terminals in both light and fan

Why?

 

[Deleted account]

Why?

Because it would then work. If sleeving the flex earth conductor it can be used as either the switched live or permanent live.

OK I agree. I Wouldn't do it that way as I would like to use the correct 3core and Earth. And fit a extractor isolator switch between the light fitting feed and the extractor.

 

[Langdale]

I would put an isolator in but doesn’t need one if a window in the room I think

 

[suffolkspark]

Theres no perm live at that light

What you dont need local fan isolation if theres a window in the room? New one on me

 

[Deleted account]

Theres no perm live at that light

What you dont need local fan isolation if theres a window in the room? New one on me

Quite correct I missed the no permanent live at light .
Also haven't heard of the window no isolator thing.

 

[suffolkspark]

I'm guessing the OP has now just left it bodged as he's not been on anyway.

@Langdale, I think your meaning you don't need an overrun timer on a fan in a room with opening window, should still have an isolator

 

[Electric Magic]

Because it would then work. If sleeving the flex earth conductor it can be used as either the switched live or permanent live.

OK I agree. I Wouldn't do it that way as I would like to use the correct 3core and Earth. And fit a extractor isolator switch between the light fitting feed and the extractor.

And I wouldn't do it that way because according to 412.2.3.2 circuits with one or more items of Class II equipment shall have a cpc run to and terminated at each point in wiring and at each accessory (except where double or reinforced insulation is being used as the sole protective measure for the whole circuit or installation).

 

[MDJ]

What cabling have you stuck in there? looks a right health robinson to me.

 

[Deleted account]

And I wouldn't do it that way because according to 412.2.3.2 circuits with one or more items of Class II equipment shall have a cpc run to and terminated at each point in wiring and at each accessory (except where double or reinforced insulation is being used as the sole protective measure for the whole circuit or installation).

Agree. As stated in my post I would run a 3 core and Earth.