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This used to happen /many/ years ago with fuses. Then they came along with
bulbs that had a built in fuse to prevent this happening.

Well, the incandescent bulbs[1] we use here appear to have fuses in and
it still happens - so do you have another explanation? I suspect the
fuse still doesn't react as fast as the MCB.

[1]I think we've got two left - apart from those in the cooker hood. Got
several live spares in the cupboard though.

--
Skipweasel
Pay no attention to that man behind the curtain.