We have a contractor in the training centre at the moment. He is dressing conductors and re-terminating connections in several distribution boards on our testing rigs. Frequent dismantling has caused a birds nest of what was just a short while ago, neatly dressed boards. Loose connections, damaged conductors ends and mcb terminals.
Not unexpected but it does indicate that there is disadvantage in too much disconnection and re-connection. Doing so a few times during the life on an installation might be ok but do we really need to? Sure, some test procedures do require dismantling but for certain procedures such as R1+R2 continuity tests might it not be reasonable to accept the technical constraints and simply leave conductors connected.
I note GN3 shows the cpc remaining in the earth bar but with the line disconnected. The test App promoted for candidates preparing for AM2 shows both line and cpc disconnected. The problem is that often these publications are treated as sacrosanct by those setting assessments. Deferring could be costly for a candidate.
