Using CPC as live conductor.... ok i know, but...

[uksparks]

Hi,

Had to change a bathroom fan at the weekend for someone and they wanted it to be on a timer, but couldnt as the cable was buried in the wall and wouldn't move etc..

the cable that fed it was a three core flex, I the earth was not being used anyway due to the load on the end etc.

I know you are not meant to use the CPC as a live conductor, but if its flex and the same CSA and you were to correctly identify it with brown etc, would it have then been acceptable?

I didn't do it, but it made me think, oh i so could have used it, but it just seemed wrong. I can understand why you wouldn't do it in twin and earth, but surely where its flex or all conductors are the same CSA and have their own sheathing on them inside the outer, would it have been acceptable or not?

I am going to say not on the basis CPC is CPC and nothing else, any thoughts would been welcomed.

 

[MDJ]

twaddle... Tut, seems to have caused a lot of debate though.

- - - updated - - -

it wouldn't help as i still needed a permenant and switched live.

with a selv fan you need a 3 core to the transformer then just a 2 core to the actual fan.

 

[Plonker 3]

with a selv fan you need a 3 core to the transformer then just a 2 core to the actual fan.

Can one of them cores be the copper draw string that we use to strip cable with?

 

[MDJ]

can one of them cores be the copper draw string that we use to strip cable with?

okay 3 core an earth lol

 

[GLENNSPARK]

seems like we still cant educate pork can we...

 

[jackhammerJIM]

with a selv fan you need a 3 core to the transformer then just a 2 core to the actual fan.

sorry GLENN meant SELV

 

[GLENNSPARK]

sorry GLENN meant SELV

your allrite...i was just being a picky git...

 

[jackhammerJIM]

Thats not like you GLENN

 

[Silly Sausage]

okay 3 core an earth lol

If uksparks had that in the first place we wouldn't be having this frigging discussion.
Forget sarz and clear your mind for gods sake!!!

 

[MDJ]

If uksparks had that in the first place we wouldn't be having this frigging discussion.
Forget sarz and clear your mind for gods sake!!!

but he has, he can convert the flex as the selv bit and stick a bit of 6243y in to the transformer from the lighting circuit:rifle:

 

[uksparks]

Yes but I still needs a switched live as well as permanent, if I had a bloody three core and earth you are right, we wouldn't be having this damn conversation.

 

[MDJ]

Yes but I still needs a switched live as well as permanent, if I had a bloody three core and earth you are right, we wouldn't be having this damn conversation.

you can take a 3 core and earth from the bathroom light to the transformer and then disconnect the existing 3 core flex from the circuit and re-route to the new transformer, change the LV fan to a Selv fan and it is job done, easy.

 

[R G]

Failing that ; take the timer module out of the fan put it in an enclosure in the loft and use the existing feed down to the fan from the enclosure ,, Job Done

 

[Silly Sausage]

but he has, he can convert the flex as the selv bit and stick a bit of 6243y in to the transformer from the lighting circuit:rifle:

I think I thought that's what you were saying, but what the hell.

 

[spark 68]

you can take a 3 core and earth from the bathroom light to the transformer and then disconnect the existing 3 core flex from the circuit and re-route to the new transformer, change the LV fan to a Selv fan and it is job done, easy.

Not sure how that works out MDJ ?

He still wouldn't have a SL (or PL) it would be one or the other at ELV ? unless I am misunderstanding you ? It would not be the first time. lol

 

[jackhammerJIM]

you can take a 3 core and earth from the bathroom light to the transformer and then disconnect the existing 3 core flex from the circuit and re-route to the new transformer, change the LV fan to a Selv fan and it is job done, easy.

thats what i was getting at MDJ :44::44: