Brown sleeving at looped in switch

[shockfreesince93]

Hi, Can anyone tell me if I need brown sleeving on any of the neutrals at a looped in switch connected for oneway use. This seems a little pointless as they are all bunched together in a terminal block, but thought it was worth checking.

Many Thanks.

 

[Taylortwocities]

I do not understand your question.
Neutrals are never sleeved brown. They should be sleeved blue or black.

Are they really neutrals? Or are they switched lives?

 

[shockfreesince93]

My terminolgy is probably poor but I beleive it's customary to slip a brown sleeve over the blue wire returning from a switch to a junction box as it has become a switched live. I was wondering how this looks in a looped in switch when the switch essentially doubles as the junction box. The nuetral loop cables are permenantly connected to the blue cable from the lamp. The switch makes a connection between the live loop and the brown supply cable to lamp.

I hope this makes a bit more sence. 17th edition course doesn't start for a few weeks so I guess we're stuck with my pigeon sparky 'till then.

Having written this explanation as much for my own clarity I am now more confident that there is no reason for the sleeving in this instance. Please feel free to tell me I'm wrong if you know otherwise.

Always grateful

 

[rjm2k]

Live = Brown or Red Sleeved Brown
Neutral = Blue or Black Sleeved Blue
Switched Live = Black or Blue Sleeved Brown

Neutral = Neutral = Neutral always marked as Neutral

Black cores or Blue cores USED as Switched live are marked as LIVE but just because they were orginally blue/black doesn't mean they WERE Neutral.


Have you looked at this?

http://www.diynot.com/wiki/electrics:lighting:lighting_circuit_layouts

 

[Taylortwocities]

If I understand your second post correctly.

All the blue or black wires in the back of the switch are connected together in a terminal block, yes? If so this is the neutral loop and no sleeving is needed there.

There are two wires connected to the switch these are brown or red, yes?
If so, these are the permanent live in and the switched live out and also do not need sleeving.

The only time sleeving is needed is when a wire is a live or switched live wire has insulation of a different colour than red or brown. Then you need to sleeve it to show that it is, or may become, live.

PS a C&G 2382 "17th Edition" course will only teach you how to read the subject index in BS7671. It will not give you any skills wrt electrical installation work.