I was doing a PIR or is it a EICR any way there is a 3 phase commando socket hanging out the steel trunking and on removing the DB cover it is supplied directly from the main switch this is used for events inside a large games hall, so it should be on a OPD right but how do I rate it supply to this board is from a 63A MCCB as there is no way of telling what will be plugged in to this do I protect it by a OPD of under 63A
Pict
Pict