"Lurch" wrote in message
...
On Sun, 6 Mar 2005 20:36:19 -0000, "Mike" 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.

Er, sounds a bit Heath Robinson, like.

Possibly. But as I said this was a common approach to wiring in the 70s and
could be what the OP has.