"David W.E. Roberts" wrote:

Hello David

DWER| Should lighting circuits be on a ring like power circuits?

"Should"? No.

"Can" Yes.

Either ring or radial, it depends mostly on the load expected. Not
many would require more power than a radial, either 1.0 or 2.5mm, can
supply. No point putting in a ring unless you do need more power since
it uses almost twice the wire - /although/ some layouts might actually
make it more economical to install.

If you've got one in and are wondering if it's right, just don't
worry; whichever it is.

--
Simon Avery, Dartmoor, UK
uk.d-i-y FAQ: http://www.diyfaq.org.uk/