The message
from Tim S contains these words:

[1] Not hard, but you *need* the bloke to go through it as some stuff is not
obvious until you've heard it.

Out of interest - are you supposed to take the backs of such plugs as
you can and check the security of the terminal screws? Checking the fuse
value make sense, of course, and while you're at it checking nothing's
loose would make sense.

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