1mm or 1.5mm T&E for standard lighting circuit in your average house.

[123]

On these shores not many wholesalers stock 1.0mm T&E, so it's 1.5mm T&E generally used.

All wholesalers stock Twin Brown, PVC/PVC Brown or Blue singles, and PVC/PVC Brown or Blue singles & Earth. All in 1.5mm

 

[Phil Thompson]

Same for me, though have never bought a roll of the single blue only the brown.

Though had a kitchen job on Saturday looking an extra under cupboard light and glass cupboard light on with the rest.

Handily it was going above the light switch, so switch wire wasn’t a worry, but when I opened the switch it was all t&e in and t&e out.

 

[Andy19]

Shirley (!) you use a cable suitable for the design, not 'cos of its physical size?

Quite right, stick to the regs! Unless of course you can depart from the regs in a way that provides greater safety.

 

[sparksfly]

I like to tug a 1.5mm...a wee 1mm does not no do it for me !!, also useful for the odd socket.. although, have used 3c 1mm T/E easier for dimmer switch & 2way terminations.

 

[satori]

Margaret, Margaret, there's a fool down here calling you Maureen.

Twas Maureen when Harry Enfield did it, and Margaret when Little Britain did it. Ha! At last, I'm able to contribute to the forum... shame it's not on topic.