This is from a 4 bedroom house. The top row are 10 amp (Lights), Cooker is 32amp, 20amp (Immersion) 10amp (Boiler + Pumps [heating system controls, for some reason the entire heating system.. boiler,
pumps, timers etc.. is connected via a 5amp double pole switched spur as the only item on that radial circuit.
The black marks are just dust. There were a LOT of cobwebs
It's an installation dating from the 1970s originally. Although the age of this unit isn't quite clear. It does pre-date current RCD requirements as only the sockets are RCD protected.
We're adding more lights so that top row will be a lot fuller and as they're "touchable" and include plug-in switch controlled free standing
lamps, we're going to RCD protect them. Should be easy enough there's still space on the board
This unit is VERY typical though. Older ones are identical the only difference being that the breakers would all be neozed (or even diazed) fuses.
(note the main fuse!)