David Hansen wrote:

MCBs do have advantages of ease of operation and resetting, though
if one operates more than once in a blue moon then there is probably
something wrong with the circuit or something connected to it.

This is true, though not the whole story. The time it takes to replace
a fuse wire at a guess 2 or 3 times in the life of an installation is
less than the time taken to go get some mcbs and retrofit them. Oft
overloooked in the rush to '''upgrade.'''

And the cost is 50p.


NT