"Pablo" wrote in message
...
Do the regs allow two DBs to be connected in parallel protected by only
one
mcb.
i.e. a cable feeds DB1 then another cable goes from DB1 to DB2 but
connected
directly to the feed for DB1.

Our inspectors don't allow it, we must run from
separate MCBs or Henley blocks of a suitable rating.

I suspect it's the overcurrent in the terminals you are
using for paralleling

An instance we had was running a DB for emergency lighting
paralled into the lighting DB - not allowed