Qucik question regarding light in loft

[nitro23456]

Hi

Can I use some spare 2.5mm twin and earth I have left over from another job to spur off the existing lighting circuit to add a loft light:

lighting circuit --- triple junction --- 2.5mm t/e --- fused switch --- flurescent strip light

or should I buy some 1.0 or 1.5mm? what fuse in the switch?

 

[Spark123]

Use 1mm or 1.5, 2.5 is a pain to work with in most domestic accessories made for lighting circuits.
As you are taking it from an existing lighting circuit then no need to have another fuse.

 

[nitro23456]

thank you for the reply

I guess what I am asking is CAN I use the 2.5mm? I realise the smaller sizes are easier, but is 2.5 going to be ok?

 

[Spark123]

There is nothing technically wrong with using a bigger size, however as I said it will be a pain in the backside to work with. It might also confuse someone later on when the see 2.5 in use and think it is from a socket circuit.
Personally I'd use 1.5mm, given the price of new cable it isn't going to break the bank to use it.

 

[nitro23456]

cheers.