Only just spotted this thread.
The first picture in post #22 is of the very same type of power switch/fuse that I have for the mains supply in my workshop.
I installed it when I built the workshop in 1989, mainly because it was available in my misc. junk box at the time.
It easily carries 13 amps with no fuss or over-heating.
Just for a laugh, it has an old B.S.I. electrical safety pass label hanging fron the knob. Tony.