sleeving

[paul b b]

i'v been chasing in existing circuits in a house and have found that some things are sleeved and other things not, for instance in 1 light switch there is 3c with gray and black fully sleeved, in another nothing, in another the brow has been sleeved with brown..i presume to tell that this is the cable to the light fitting (looped in switch).

nothing is sleeved in the rose.

just intrested in what should be. or should you sleeve everything in a switch and rose

thanks

 

[Andy™]

all conductors should be identified at all points

 

[steptoe]

[quote name='Andy

 

[meady]

I always sleeve live conductors wherever they are terminated, I have now started using t&e cable that both conductors are brown for my switch cables.

 

[PeatBog]

I've been tempted to use double brown wire for switch cables, but have avoided as I don't know how you would easily differentiate between live and switched live at switch, i.e. you want to connect live to common terminal and sw live to L1/2. Am I being simple!

 

[ianmacd]

Is it not a requirement in scotland to use the 2 brown t&e for switch drops?

 

[Lurch]

Am I being simple!

Yep, I worked with someone once who was struggling with a switch for some reason, turns out he was making sure the common and L1 cables went back in to the terminals they came out of, which is fine on switches with looped feeds and wotnot but for a simple 1 or 2 way there's no need.

So really, why would you need to differentiate? On most drops it would make no difference, if you need to work out what the difference is then you test the cable as you 2nd fix it, or use blue\brown on drops that need to be differentiated. You don;t need to be able to identify the feed and switch lines visually after installation though.

 

[spinlondon]

Unless you were changing the switchplate live.

 

[ianmacd]

Unless you were changing the switchplate live.

Surly your fingers would then tell you which was which?

 

[a1]

I use Twin Brown and earth too. (Or the usual blue, brown & earth).

 

[Andy™]

Unless you were changing the switchplate live.

why? just treat both as live

not that you should be changing a switch live anyway

 

[spinlondon]

[quote name='Andy

 

[PBC_1966]

And if you really need to know which wire is which at some later date, you can easily just turn the switch off and test each terminal to earth in turn with your meter.

 

[ianmacd]

Or neonscrewdriver.

*runs for cover*

 

[spinlondon]

And if you really need to know which wire is which at some later date, you can easily just turn the switch off and test each terminal to earth in turn with your meter.

Or use the American way.

 

[Lee321]

unless there is no possibility of confusion

 

[steptoe]

Or neonscrewdriver. *runs for cover*

100%

Applaud Smiley

 

[Megaohm7]

You should sleeve the conductors at all points so at least the person following on from you will know what is what so it is good practice and green/yellow sleeving on cpc's is often overlooked but again the sleeving should be in place . looks professional too

 

[Lee321]

You should sleeve the conductors at all points so at least the person following on from you will know what is what so it is good practice and green/yellow sleeving on cpc's is often overlooked but again the sleeving should be in place . looks professional too

sleeving on cpc's look professional :coat

 

[ProDave]

Is it not a requirement in Scotland to use the 2 brown t&e for switch drops?

No.

Why would it be? We work to the same BS 7671 as the rest of the UK.

We have our own building standards that differ from the rest of the UK, but I'm not aware or building regs stipulating wire colours.

P.S in this part of Scotland, loop-in-the-switch is the most common method for lighting, so we don't have switch drops to worry about.