UK Wiring emergency lights

[Scifen]

Hi Guys, how would you wire three gang two way switch for emergency lights so you have 3 feeds coming to the switch aswell as 3, 3 core and earth going to the light aswell as 3, 3 core and earth being strappers to the others 3 gang two way switch new to electrics so help would be appreciated cheers

 

[westward10]

Not a Regulation then.

 

[Dustydazzler]

All I have ever seen is advice about old colours and how they correspond to new colours, but not how to oversleeve harmonised colours for different uses.

The official guidance from the iee and niceic at the time was to not use black as neutral post harmonisation.
It was to use grey sleeved blue.
Black sleeved g/y

 

[Andy78]

The official guidance from the iee and niceic at the time was to not use black as neutral post harmonisation.
It was to use grey sleeved blue.
Black sleeved g/y

Like I say, I have never seen that guidance written anywhere, heard it plenty of times though and it is the convention I tend to use.

 

[davesparks]

I had a thing from the niceic around the time of harmonisation it was a big A4 leaflet about de neutralise black when converting old colours to new. Think several cable manufacturers also produced their own leaflets of de neutral black as well...

It’s even in the brown on site guide I think

Will try to dig it out later

The niceic made up that nonsense but as far as I know it never featured in the regulations.
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The official guidance from the iee and niceic at the time was to not use black as neutral post harmonisation.
It was to use grey sleeved blue.
Black sleeved g/y

Do you have any evidence of the iee supporting this?

The convention was to use red for live, yellow for another live or earth and blue for neutral. Red became brown, yellow became black and blue became grey, so to continue the same convention Black is used for live or earth and grey for neutral.
This can keep joints between the two neater/easier as the cores should naturally line up if you have the cable the right way round.

 

[Dustydazzler]

The niceic made up that nonsense but as far as I know it never featured in the regulations.
[automerge]1569226857[/automerge]


Do you have any evidence of the iee supporting this?

The convention was to use red for live, yellow for another live or earth and blue for neutral. Red became brown, yellow became black and blue became grey, so to continue the same convention Black is used for live or earth and grey for neutral.
This can keep joints between the two neater/easier as the cores should naturally line up if you have the cable the right way round.

Yes black becomes a live or earth

The grey became the neutral

If adding new cable to an old installation

That was the official recommendation iirc
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Will try to dig out my old brown on site guide later and take a picture