Can I use some 3 phase SWA on 1 phase, using the grey taped over as cpc? It needs to comply with the 18th.


NT

On 27/02/2020 22:22, wrote:
Can I use some 3 phase SWA on 1 phase, using the grey taped over as cpc? It needs to comply with the 18th.


Until someone comes along with the authoritative answer I'll offer that
it was fine to sleeve a core as CPC (although NICEIC et al recommended
using the /black/ core to get people away from the idea that
black=neutral). I don't know of anything in the 18th to change that but
my unknown unknowns are legion.




--
Robin
reply-to address is (intended to be) valid

On 27/02/2020 22:22, wrote:

Can I use some 3 phase SWA on 1 phase, using the grey taped over as cpc? It needs to comply with the 18th.

So long as you over mark it at both ends that's fine...

(although it its SWA, then normally using the screen on a two core makes
more sense - unless you particularly need the extra CSA)


--
Cheers,

John.

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In article ,
wrote:
Can I use some 3 phase SWA on 1 phase, using the grey taped over as cpc? It needs to comply with the 18th.


Here, the old LEB or whatever moved the meter from the cellar to the top
of the cellar stairs, and used 3 phase SWA. With the yellow identified as
earth.

I'd use sleeving rather than tape, though. On two wires, both ends.

FWIW, The old to new colours are these:-

Red is now Brown
Blue is now Grey
Yellow is now Black.

The convention (if there was one) with the old colours was to use red as
line, blue as neutral, and yellow as earth. So I'd be inclined to stick
with that, so black would be the new ground? With brown blue and
green/yellow identified both ends nothing to need guessing at.

--
*I want it all and I want it delivered

Dave Plowman London SW
To e-mail, change noise into sound.

On 28/02/2020 09:03, Robin wrote:
On 27/02/2020 22:22, wrote:
Can I use some 3 phase SWA on 1 phase, using the grey taped over as
cpc? It needs to comply with the 18th.


Until someone comes along with the authoritative answer I'll offer that
it was fine to sleeve a core as CPC (although NICEIC et al recommended
using the /black/ core to get people away from theÂ* idea that
black=neutral).Â* I don't know of anything in the 18th to change that but
my unknown unknowns are legion.


AFAIK you can in this case over sleeve the colours in any order you wish
and could over sleeve the brown with blue and use it as the neutral if
it turned you on and you wanted the extra work.

I would say 99% of installations like this use the black as the cpc:-)




--
Adam