'But' is the 10mm2 shower feed on a 40 or 45A MCB, crammed into a tiny ceiling switch box, with a terminal that has worked loose and melted the insulation of the cable, shorting live and neutral together.e for all events, but.
'But' is the 10mm2 shower feed on a 40 or 45A MCB, crammed into a tiny ceiling switch box, with a terminal that has worked loose and melted the insulation of the cable, shorting live and neutral together.e for all events, but.
Still, it could be worse. Closing a MCCB on a 50kA fault is definitely on my not-to-do-list!Whatever the manufacturers claim, closing a MCB live, against a short circuit, is neither good for the MCB nor my nerves.