Who's right? Hopefully me!

[Deleted member 26818]

According to BS7671, you can use whatever colour you want excepting G/Y, as long as you identify at the terminations.
I do a lot of work where there is a permanent line and a switched line. Usually one is brown the other is black. It depends on the site as to which is which.

 

[Pete999]

Not quite sure what a CP Scheme has to do with it I think the OP is referring to the person in charge of the centre (Bossman) and his tutor.

Read my previous post

 

[Toneyz]

Read my previous post

Please explain what the connection is to a CP Scheme.

 

[Pete999]

Please explain what the connection is to a CP Scheme.

IMO if the OP, who as it seems, has received conflicting advice, the training center's usually have some affiliation to a CPS member, example NICEIC approved, that sort of thing.
If he get failed for taking the advice from his Tutor, and it proves out to be the wrong advice, as in this case, I feel his recourse will be to contact the CPS and air his complaint to them, whether he will get anywhere is debatable, you have to agree to that surely, or maybe you don't.

 

[telectrix]

I use twin brown when I can saves marking cable ends

problem with twin brown is you need to ID which is which, otherwise you have a 50/50 chance of L feed into L1 and switched L into C, at the switch.

 

[Drew34]

Thanks for the help guys I will just pull it back out.
Lesson learned

 

[AJshep]

Sounds to me like the training centre didn't want you to waste any more of their cable.

These training centres don't make much money you know

 

[Pete999]

Sounds to me like the training centre didn't want you to waste any more of their cable.

These training centres don't make much money you know

You Jest?

 

[AJshep]

Yes the last paragraph was meant to be taken jestfully.

Although I'm sure that's what they would tell the OP if he asked.

 

[Ian1981]

problem with twin brown is you need to ID which is which, otherwise you have a 50/50 chance of L feed into L1 and switched L into C, at the switch.

Didn’t think it mattered really L or C and L1 are identified as live terminals

 

[Pete999]

Didn’t think it mattered really L and L1 are identified as live terminals

It would matter if you had a 2 or 3 gang switch and needed to loop the L to the other switches.

 

[Ian1981]

It would matter if you had a 2 or 3 gang switch and needed to loop the L to the other switches.

but then I wouldn’t have used twin brown as my switch would be mains fed with just a switch live and neutral to the light

 

[Pete999]

but then I wouldn’t have used twin brown as my switch would be mains fed with just a switch live and neutral to the light

Perhaps next time you could explain your reasoning with a little more detail, that would have avoided any misunderstanding.

 

[telectrix]

i prefer to use 3c/E for switch drops id new works. then you have L, N, S/L at both light/s and switch/es. makes it easy for retro fitting smart switches etc.

 

[Ian1981]

I thought it was obvious if I had mains at the light then I’d use twin brown at the switch and it wouldn’t matter which way they connected to the light switch

 

[ipf]

Didn’t think it mattered really L or C and L1 are identified as live terminals

What if you've got a point in a lighting circuit not identifying a sw L?
Bleedin' 'ell....easy for all these DIY ers.

 

[Pete999]

I thought it was obvious if I had mains at the light then I’d use twin brown at the switch and it wouldn’t matter which way they connected to the light switch

Would that be a single gang or multi ganged switch?

 

[Ian1981]

Would that be a single gang or multi ganged switch?

Light switch would indicate 1 switch.
If I said switches then it would be more than 1
One gang I mean

 

[Ian1981]

Deleted

 

[Ian1981]

What if you've got a point in a lighting circuit not identifying a sw L?
Bleedin' 'ell....easy for all these DIY ers.

Sorry I don’t follow you?