cable size

[uklad]

Hi all again, i was reading what ring mains was wired in 2.5mm and lights wired in 1.5mm, i know that the cable size shouldnt be smaller but can u put a lot bigger cable in are is that just as bad as smaller? Its not for any work being done just a qustion

 

[wingcoax]

Actually you can wire lights in 1.00mm. The sizes are minimum requirments and can be increased but at a cost, who would want to waste money on something you don't need?

 

[ban-all-sheds]

Hi all again, i was reading what ring mains was wired in 2.5mm

No, they are done with cable with a current carrying capacity of at least 20A and which will not, under the intended conditions of use, to be overloaded at any point for long periods.

can u put a lot bigger cable in are is that just as bad as smaller?

Ib ≤ In ≤ Iz

 

[Steve]

IIRC, streetlights are wired in 4mm²

 

[Guitarguy]

Streetlights can be wired in 4mm concentric. This is horrible to work with and 25mm ali concentric usually gets put in instead.

 

[Steve]

Streetlights can be wired in 4mm concentric. This is horrible to work with and 25mm ali concentric usually gets put in instead.

Streetlighter will be along soon

 

[Taylortwocities]

can u put a lot bigger cable in

Yes you can but you will find that the terminations on a lot of lighting switches/pendants/etc aren't big enough for cable larger than 1.5mm².

 

[ColJack]

switches at least will be able to take bigger as the are designed to take at least 2 x 1.5mm² cables ( for strappers and link lives etc ), but most ceiling roses are a little on the small side for getting 2 cables in..