Mark Williams wrote:

If you're extending a 30A ring then the terminals only need to be
rated at 20A each (just as would be the case if you could fit all the
conductors in for your two spurs) and you can get six of them in one
box...

I wasn't objecting to the expense! My point - as I thought was clear - was
that I'd always been led to believe that there should be as few breaks in
the ring circuit as possible, and so one was better than two.

Bert
http://www.bertcoules.co.uk