Excuse me for being a bit dense, but there's no reason why I can't use a 2.5mm² T&E for my lighting circuits, is there?
It's just that I don't want to crack open a new reel of 1.5mm² when I have a load of 2.5mm² leftover. I can take the unused 1.5mm² back to B&Q, but they might be a bit annoyed if I try it on with a long offcut of mains cable!
I presume the use of 1.5mm² is something to do with the size of cable you can fit into the dainty little terminals in light fittings and switches?
I'll be using a pair of 6A MCBs ready for my lighting spurs, of course, and a job-lot of 20A junction boxes in the loft to make the connections between these 2.5mm² 'busbars' and the light fittings (I also have a load of 1.0mm² I can use for short spurs to the light fittings and switches.)
And BTW, what exactly is the problem of having a ring circuit for your lights??
It's just that I don't want to crack open a new reel of 1.5mm² when I have a load of 2.5mm² leftover. I can take the unused 1.5mm² back to B&Q, but they might be a bit annoyed if I try it on with a long offcut of mains cable!
I presume the use of 1.5mm² is something to do with the size of cable you can fit into the dainty little terminals in light fittings and switches?
I'll be using a pair of 6A MCBs ready for my lighting spurs, of course, and a job-lot of 20A junction boxes in the loft to make the connections between these 2.5mm² 'busbars' and the light fittings (I also have a load of 1.0mm² I can use for short spurs to the light fittings and switches.)
And BTW, what exactly is the problem of having a ring circuit for your lights??