John Rumm wrote:
Bob Eager wrote:
Or on a separate circuit, linked to a visible non-maintained emergency
light (say, on the stairs). If the power fails, you have light where
needed. If the circuit fails, the light comes on and you get a visual
indication.
Having one of those on the lighting circuit that illuminates the CU is a
good plan as well I think. That way you are not groping in the dark to
reset a MCB or RCD.

Specially when you've left the cover off the CU because you're in the
middle of something, and somebody trod on it and cracked it so you're
waiting on a new cover down the wholesalers as well as a three for the
price of two pack of tuits

Not that any of us would ever do that, no no no.

Owain