Double of lighting circuit

[MidsTW]

I already took some advice on this before but I wanted to double check it is correct.

I was adding a light to the upstairs lighting circuit. I installed a new switch and then the light. The nearest ceiling rose didn't contain a live so I used a permanent live from a switch and the neutral from the ceiling rose. Laid out as shown in the image. Where the live isn't used I just trimmed it back inside the grey sheathing.

 

[EFLImpudence]

I don't know the layout obviously but as long as it's all done properly then, yes as long as it's all on the same circuit.

You should not have cut off the unused wires.
It wouldn't be a live if you haven't used it (being picky)
Have you done the same with the unused wire in the other cable?

You could have connected it to earth or used both together for the Live (and Neutral supply).

(the permanent live is the loop)

 

[MidsTW]

Thanks. I think I just bent back the unused neutral from the switch where I borrowed the permanent live.

Yes it's all on the upstairs lighting circuit. And sorry I didn't understand the bit about connecting to earth etc?

 

[EFLImpudence]

Unused wires should be connected to the CPC (earth wire) - at both ends obviously.

This way, anyone working on it later will see that.
Your cut off wire could be live.

 

[MidsTW]

Ahhh I understand! Makes sense.

 

[MidsTW]

As it is a ceiling light upstairs it's not much hassle for me to correct that either so may do that before re boarding the loft or is it worth buying some single neutral/live cable?

 

[EFLImpudence]

I wouldn't bother buying single and earth cable.

 

[MidsTW]

Okay thanks, I will terminate correctly when I'm next free