OK...Just to liven things up: Hypothetically, I do a board change and as part of that change we lower the height of the CU to something more sensible which means we need to extend the existing cables. Now, ordinarily that'd be a dappy box, din rail and din connectors. The stated reason for this reg change (according to BEAMA) is an increase in fires from poor terminations......so my plastic dappy box with twice the number of terminations which sits 2' higher than the new board, no-one cares about??