3 core twin and earth cable what colour should you use as the neutral

[keefy]

Not quite Nick. There needs to be a standard so we all know what is going on, that's the idea of having identification in the first place. In a 2 way all are line conductors so there is no ambiguity, whereas in a switched circuit (IE PIR) ther has to be one who is neutral, and thats grey. Using yellow as the CPC and blue as neutral in RYB colours was easy as blue was then recognised as neutral in flexes, and yellow... well that's obvious. When the new colours were introduced the NIC and others were quick to make a standard to enable all to understand the colours, it will make your life easier if you go to a job and there is no sleeving!

 

[Sintra]

If the bloke before you can't be bothered to sleeve the cores then he isn't going to worry what colour the neutral is.


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[telectrix]

nah. use em anyhow and sleeve em in red, yellow and blue. then we're back to sensibility.

 

[keefy]

If the bloke before you can't be bothered to sleeve the cores then he isn't going to worry what colour the neutral is.


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If he has paid attention to what colour should be neutral he will. Just because he is lazy does not make it less likely he will use the wrong core.

 

[keefy]

If the bloke before you can't be bothered to sleeve the cores then he isn't going to worry what colour the neutral is.


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If he has paid attention to what colour should be neutral he will. Just because he is lazy does not make it less likely he will use the wrong core.

 

[Sintra]

IMO it would be better to have the "wrong" core used so long as it is sleeved correctly rather than the "correct" core unsleeved.


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[keefy]

IMO it would be better to have the "wrong" core used so long as it is sleeved correctly rather than the "correct" core unsleeved.


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If you are happy being the least wrong in an industry that needs everything to be right to work safely then so be it. It shows your standards.

 

[rmc86uk]

grey with blue sleeving everytime, I have never met anyone who has used black in 3 core PVC/PVC as neutral instead of grey

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[R1CH-G]

Grey is the new blue! Black is earth.

EDIT: That's SWA I'm referring to there! on PVC/PVC the earth is a little more obvious

 

[Deleted member 26818]

I can't see why the black cannot be used.
It used to be the neutral, so why can't it be now?
Seems quite logical to me.

 

[cbw]

Cool.....As said sleave them for my benefit, couldnt work out why I was getting 'odd' readings on testing a faulty bathroom fan..........
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Black, Blue and Brown in one, 2 Red and a Brown in another and a Yellow/Green and blue in the last................QUALITY

 

[R1CH-G]

Cool.....As said sleave them for my benefit, couldnt work out why I was getting 'odd' readings on testing a faulty bathroom fan..........
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.

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Black, Blue and Brown in one, 2 Red and a Brown in another and a Yellow/Green and blue in the last................QUALITY

And what's wrong with this picture?

Discuss...

 

[cbw]

out of focus.......d+ for effort

 

[keefy]

The yellow and green is puzzling. Where did it come from? Yellow and green can't be used for anything else for earth/CPC or bonding.

They used the green/yellow in a 3 core flex to feed the extract didn't they? V bad...

 

[Deleted member 26818]

It would appear that an earth is being used as a live conductor?