t&e cable for 2 way switch.

[neiloneil]

Is it acceptable to run a single conductor next to twin and earth to allow me to rig up a 2way switch? rather than buying a reel of 3core and earth.

 

[bernardgreen]

Provide it has insulation ( red or brown ) and an outer sheath ( grey ) then yes, but buying single core might be un-economical compared to a short length of 3 core and E

 

[neiloneil]

thanks for your reply Bernard. I have plenty of t&e, so for the short length I need I will just use that and utilize the brown wire only.

 

[EFLImpudence]

Connect the CPC(earth wire).

Also, you could attach the Blue to the same terminal as the Brown.
You should sleeve the Blue with Brown but it will be obvious and all conductors will be Line so...

 

[neiloneil]

do you mean I should connect both earths together?

 

[ban-all-sheds]

Provide it has insulation ( red or brown ) and an outer sheath ( grey )

Surely the sheath may be any colour?

 

[amjmfareham]

Hi Neil,

To be honest, wouldn't it be easier to purchase a small amount of 3 Core and Earth Cable in the first place, from places such as Toolstation, as 10 Metres is only £8.37 and would be more economical than purchasing a drum of single core wire, and look much better in the process, but at the end of the day it is your choice!

Here is a link to it: http://www.toolstation.com/shop/Electrical/d190/Cable/sd2730/3+Core+&+Earth+Cable+(6243Y)/p77892

Kind Regards,

Andrew

 

[securespark]

Provide it has insulation ( red or brown ) and an outer sheath ( grey )

Surely the sheath may be any colour?

Surely the insulation may be any colour? (Provided it is marked at both ends)

 

[333rocky333]

Provide it has insulation ( red or brown ) and an outer sheath ( grey )

Surely the sheath may be any colour?

Surely the insulation may be any colour? (Provided it is marked at both ends)

Not any colour, single core G/Y cannot be used as he proposes, though unlikely to get sheathed singles in G/Y

 

[bernardgreen]

It could be sky blue pink, just as long as the insulation isn't green / yellow ( or green ) and the sheath is not the same colour as the insulation. ( so it can be clearly seen as insulation and sheath being separate material ).

 

[PBC_1966]

just as long as the insulation isn't green / yellow ( or green )

Does the current edition of BS7671 actually say that plain green may not be used as well as green/yellow?

 

[seasickstevie]

... just as long as the insulation ... and the sheath is not the same colour as the insulation. ( so it can be clearly seen as insulation and sheath being separate material ).

Is that now an actual rule?

Going back a while, we used to use Red/Red singles and Black/Black singles regularly.

 

[bernardgreen]

Does the current edition of BS7671 actually say that plain green may not be used as well as green/yellow?

I don't know but common sense suggests that plain green could imply earth so best avoided for live conductors

Is that now an actual rule?

Is it a rule that sheath and insulation must be different colours ? Maybe not but as they have to be leaid separately when the cable is manufactured having sifferent colours would be a lot easier.

 

[securespark]

Going back a while, we used to use Red/Red singles and Black/Black singles regularly.

Gosh, that is going back a while.

I'm old.....

 

[securespark]

Wasn't there a big discussion a while back about HVAC eng's using g/y for a switchwire?

I'm sure there was a consensus that it was, while not desirable, compliant (at that time anyhow).