Confused by Wiring when swapping out a bathroom extractor fan.

[Sparky3]

@EFLImpudence it's a shame you can't give constructive advice instead of picking holes. It has been prohibited for many years.

You can't forget about bonding

No, but still used for an earthing function not requiring oversleeving.

 

[EFLImpudence]

@EFLImpudence it's a shame you can't give constructive advice instead of picking holes. It has been prohibited for many years.

Afraid not.

 

[rickmd]

Yeah, in that case just disconnect the brown wire and wire it into a choc block, you can use the fan with the light until you get the right unit

Like for like (manrose cdt200) arriving tomorrow.
And the xpelair ximx100 just listed on eBay

 

[RandomGrinch]

It has been prohibited for many years.

514.4.2 amendment 2 of BS7671:2018

514.4.2 It is no longer permissible to oversleeve the green/yellow protective conductor in a multicore cable to use it as a live conductor.

It sort of suggests that it was permissable before before 2022?

 

[Sparky3]

514.4.2 amendment 2 of BS7671:2018

It sort of suggests that it was permissable before before 2022?

14th Edition Regs 1966 edition.

 

[RandomGrinch]

14th Edition Regs 1966 edition.

Fair enough, but through the editions, that message becomes ambiguous...

If it explicitly states that single core cables can only be used as a protective conductor and can't be overmarked at their termination, then where does that leave multi core cables; especially when you were also told that cores shall be identifiable at their terminations, and only preferably throughout its length.

The wiring regs are an evolving document. That can lead to ambiguity and contradictions.
The writers of the regs must have seen that there was enough ambiguity here to 'allow' oversleeving of a green/yellow core in a cable, or why would they bother to tighten up the definition?

 

[Sparky3]

Fair enough, but through the editions, that message becomes ambiguous...

View attachment 369230
If it explicitly states that single core cables can only be used as a protective conductor and can't be overmarked at their termination, then where does that leave multi core cables; especially when you were also told that cores shall be identifiable at their terminations, and only preferably throughout its length.

View attachment 369231

The wiring regs are an evolving document. That can lead to ambiguity and contradictions.
The writers of the regs must have seen that there was enough ambiguity here to 'allow' oversleeving of a green/yellow core in a cable, or why would they bother to tighten up the definition?

When I served my time in the 1970's with Norweb it was instilled into us.

As far as I'm aware, the tightening up was to stop the likes of kitchen fitters, plumbers and the 2 week wonders using the earth conductor as a live wire.