Morning all,

I've just moved into a new (to me) 1950's ish house, and as part of my
moving in, decided to identify which circuits are which breakers are at
the CU.

I have two mains rings (upper and lower floors) that have the ends
connected to two breakers.

I have found one uk.d-i-y thread dating from 1999 suggesting this as
appropriate when connecting more than 10 computers on a single ring,
but have not come seen this in anywhere I've lived before. However,
this is also the biggest place I've lived, so maybe that's it.

So...
1) Is / was this normal practice at any time?
2) What's the likely impact ? (breakers not tripping in the event of a
fault?)
3) How urgently (if at all) should I look to change it?

thanks in advance,
Michael.