new user apprentice - batten holder/line conductor termination??

[kris jones]

Hi all,

this is my first post on here. I have searched the web but cant find a straight forwards answer (or an answer at all) for this question which is part of my c&g course.

- how is pvc insulation protected against high temperature in batten holder type fittings?

and also

- why do the neutral and CPC conductors need to be terminated in the corresponding numbered terminals on the line conductor? (i imagine it will go bang otherwise!)

hope someone can help!!??

kris

 

[The Ghost]

1 Heatproof sleeving
2 Don't understand the question

 

[SparkyChick]

Hi Kris,

Welcome to the forums.

For protecting cables against heat, I use heat resistant sleeving. It's also available in blue and green.

And like @Vortigern I don't understand the second part of your question.

 

[SparkyChick]

Having just re-read the second part... are you talking about in the consumer unit? Where the neutral and CPC should be terminated against the same circuit/MCB number on the corresponding earth and neutral bar?

 

[Rpa07]

1) using suitably rated batten fittings to protect against that temperature expected
2) if RCD protected circuit, resetting would not be possible (plus a whole host of other issues if it not RCD protected)

 

[kris jones]

sorry perhaps i wrote the q out wrong...

- state why the neutral and cpc conductors should be terminated in the corresponding numbered terminals on the line conductor

 

[Rpa07]

Doesn't matter how many times you type the question - it's still badly worded!

 

[The Ghost]

terminals on the line conductor

...inside the consumer unit? I think you got it right @SparkyChick

 

[The Ghost]

Anyway we terminate the line/N/E in numbered terminations so we can easily visually identify which N belongs to which L and E thus being able to identify (especially!) singles coming in and ring circuit ends for end to end test etc.

 

[kris jones]

thank you. I didnt write the q im just retyping it for you. that makes complete sense now though. I too couldn't figure it out hence asking. many thanks to everyone

 

[The Ghost]

using suitably rated batten

And that will protect the insulation?

 

[Rpa07]

Contained within the batten fixture, yes as it was manufactured to do so. Suitable fittings and accessories is the main point here.

 

[westward10]

Most good quality modern battens, assuming you mean batten holder and not pendant holder like you get at a ceiling rose come with the removable lamp holder pre wired to the terminal base, these conductors will be suitably rated and your pvc insulated conductors which you wire to the base need no further protection.

 

[davesparks]

Do you actually mean a fluorescent batten fitting and not a batten holder?

 

[The Ghost]

In any event if you are asked in an exam "...how do you protect insulation on a cable in a light fitting..." and answered get a heatproof light fitting I dont think that would get a mark. But ....you never know with C&G wording.