"Lurch" wrote in message
...
On Sat, 05 Mar 2005 21:03:17 +0000, Mark Carver
strung together this:

I have two ring mains, (downstairs and upstairs) both fed from 32A MCBs
in the consumer unit. The 'downstairs' MCB has three live connections,
so I assume there's a spur somewhere ?

Sounds like it.

Might not be. When we tended to have smaller CUs it was quite common to run
three wires from the CU through sockets in various directions and join them
all together at some remote point so that all sockets had dual routing.

Not sure if this is still allowed in the latest wiring regs though.