Bathroom light & extractor fan help

[Dorsetnewbie]

I can’t find a isolation switch anywhere. The fan has been disconnected Due to tiles. Those three wires are now in a block. The light worked fine before I took the Rose off and tried to wire this new led one!. If I wire in just the yellow and blue from one cable into the new light it doesn’t trip. But as soon as I add any of the yellow or blue from the extractor cable it trips?

 

[Dorsetnewbie]

That’s the extractor fan switch

 

[terryplumb]

Show pics of the terminated cables conductors at fan position.
Was that terminated as you described whilst old light fitting was on and working ? Or have you terminated it as a part of fitting new light today ?

 

[Dorsetnewbie]

It’s been terminated for a while now into a block of three with a cable in each hole the same way as the extractor fan. The light was working fine. Then I decided to change to this large led one. Why oh why didn’t I take a pic of the ceiling Rose before taking all the cables out

 

[terryplumb]

You have two pull cord switches, the one that you use to turn on the ceiling light ,did it also operate the fan ?
What tripped ,MCB ,RCD ,RCBO ?
When the device tripped FIRST time ,what was the wiring configuration at the new light fitting ( what coloured conductors connected to what) ?

 

[Dorsetnewbie]

Yes two pull cords in bathroom, one for each. I turned the black lever off on lights on the fuse box. Wired in (which I thought was same way) new light went into garage to flip black lever back to on and it wouldn’t stay on

 

[Dorsetnewbie]

That’s the old ceiling Rose. I’m sure it was two blue on left with a blue jointing to light. Two red in the centre. Then two yellow on the right with a brown joining to light. I have wired this new light in the same way. And have tried putting the old ceiling Rose back but it just won’t work. All I can think is I have not remembered correctly which cable was where

 

[terryplumb]

So the fan didnt run when the light switch was operated ,only the light came on historically ?
You are going to need a multimeter to do some testing to sort this out.

 

[Dorsetnewbie]

Yes pretty sure the fan used to turn on when Turing light on, but could turn the fan off with its own separate pull cord. What am I checking with a multi metre? I will go buy one now from screwfix if I know how to use it?

 

[terryplumb]

You may have hit a cable with a screw thats holding the fitting to the ceiling !!

 

[Dorsetnewbie]

I have been in the attic and can not find a cable with red blue and yellow in it. So annoying as I should of just left it all

Not a fuse box. It is a consumer unit.

same thing....

 

[Dorsetnewbie]

You may have hit a cable with a screw thats holding the fitting to the ceiling !!

well after 3 hours on the phone and a lesson in electrics and using a multimeter....... all I can say is a massive lesson learned!!! And thank you so much for your patience and help! Looks like I’m in the garage tonight too Hahahaha

thanks terry was a right laugh!!!

 

[denso13]

It is NOT the same thing. A fuse box has fuses. A CU has trip switches.

As you said in a different guise though elsewhere, "You know what was meant".

 

[Dorsetnewbie]

It is NOT the same thing. A fuse box has fuses. A CU has trip switches.

chill winston

it’s my sense of humour