Multiple FCUs

[JohnW2]

Perhaps the answer is for the fuse holders in FCUs to be re-designed such that the rating of the fuse is determined by the holder. This would require that there was also a range of matching fuses where the mechanical size was related to the fuse's rating making it impossible to fit a 13 amp fuse into an FCU protecting a 3 amp circuit.

...or, perhaps, phasing out 'FCUs' and replacing them with accessories containing MCBs -on the basis that it has been suggested (and is obviously at least partially true) that householders/DIYers are probably less likley to change an MCB than a cartridge fuse.

That won't of course prevent the determined, un-informed and thoughtless person changing the FCU at a later date.

That, of course, is bound to be the recurring issue in this discussion - and there clearly is a limit to what one can attempt to 'design against'!

Kind Regards, John.