sleeving colour

[JohnD]

I observe that the electrician who connected the control systems on my gas boiler has used 3-core flex instead of 3+E or Boiler cable

he has used the G/Y core for signalling not as a CPC

(CPC is present on a single core)

I think I will put heat-shrink sleeving on the G&Y that is not CPC

the other cores are blue and brown, what is the conventional colour I should use for the third core?

 

[Spark123]

Shoot the idiot!
G/Y is only EVER allowed to be a CPC/Earth

 

[securespark]

Call him back & politely but firmly request that the installation is made compliant.

 

[JohnD]

I don't want him back. It took him several attempts to get it working.

It was done over a year ago and I have given up with the installing company.

 

[Spark123]

Replace the cable?
The official colour for a phase is brown so even if you end up with brown, black, grey, blue you need to ID the cables correctly.

 

[JohnD]

what colour is 3+E these days? I used to have red/yellow/blue

 

[Spark123]

Brown, black, grey usually.
You'd need to sleeve the black with brown sleeving and grey with blue sleeving.

 

[JohnD]

Can't I just sleeve the G&Y with grey? The flex he has used has Brown, Blue, Green/yellow cores.

I think if I do re-cable it (I probably won't) I'd get some 12-core or whatever it is boilers use. He has three 3-core flex and one 3+E going in the duct from the boiler, up to a wiring centre in the airing cupboard on the next floor, where there is 1x Cyl stat, 1x pump, 1x 3Port valve.

I could do it myself, but can I be bothered taking the floor up?

 

[Spark123]

Can't I just sleeve the G&Y with grey?

Grey isn't the colour to use as a phase in a single phase installation, it is brown.
Personally I wouldn't, it is shoddy workmanship.
Can you use the existing cable as a pull wire?

 

[333rocky333]

Shoot the idiot!
G/Y is only EVER allowed to be a CPC/Earth

Does that not refer to the colour, or with Single core G/Y cable.

Not that I would do it, but I read the regs,That you can colour oversleeve the core in flex or multicore, but not number it.

 

[JohnD]

not easily it goes from the boiler connection block into a duct, up one floor, through some joists under the bathroom floor, through wall, up through floor of airing cupboard, into wiring centre.

If I verify which G/Y cores are L or S/L, and sleeve them in brown at each end, that would at least be an improvement, wouldn't it?

 

[Spark123]

That refers to colour. The inner core of a T&E is single insulated hence must not be used as a live conductor, however as JD stated it was flex I assumed it was G/Y sheathed.

 

[Spark123]

If I verify which G/Y cores are L or S/L, and sleeve them in brown at each end, that would at least be an improvement, wouldn't it?

Nah, still poo workmanship. You'll never change my mind on that one

 

[JohnD]

no, I meant it was 3-core flex, with brown/blue/green&yellow cores, and white oversheath

 

[Spark123]

Yep, still poo!