Identification of conductors (appendex 11)

[Graeme Harrold]

Oh well, I ve just wired in a few smoke and heat detectors.

Brown Line
Black sleeved blue for neutral,
Grey for the interlink signal
Bare sleeved for CPC

Cant see the big problem as long as the sleeving is done well, but if convention is steering that way then Ill go with the flow to aid fellow sparks following in my foot steps

 

[Andyfm]

I may be wrong,but I think this grey for neutral belief came about because of the Niceic s lust for making their own regs

They want to use grey as the neutral so that black,being a phase colour,is no longer associated with neutral

What the logic behind this I dont have a clue,but sometimes they are a difficult organisation to understand

Thats what I reckon as well, they like being a law unto themselves ( but then try to make everyone else comply with them)

 

[Gerry]

Thanks to everone who replied to this thread. I spoke to the lecturers at motherwell college and they agree with lenny, its to with de-neutralising the black. It does seem odd though that they never added this to the regs in app.11 as you might think that this would be a very important matter as you hear quite regularly of people connecting the black to neutral out of habit. My mate stopped someone from the board doing it a few months ago.

 

[Risteard]

Thanks to everone who replied to this thread. I spoke to the lecturers at motherwell college and they agree with lenny, its to with de-neutralising the black. It does seem odd though that they never added this to the regs in app.11 as you might think that this would be a very important matter as you hear quite regularly of people connecting the black to neutral out of habit. My mate stopped someone from the board doing it a few months ago.

It's not in the Regulations because they simply require that the conductor is properly identified. "De-neutralisation" of black is purely an NIC idea. You could equally argue that it is more logical to use a core colour that used to be neutral for it. The point is that regardless of what you use it must be correctly identified, e.g. oversleeved. Then no possibility for confusion exists.

Bizarelly, some people seem to think that oversleeving black blue for neutral contravenes the Regulations. It doesn't.