In article ,
Owain writes:

One aspect is that if it needs a keyswitch then there's an argument that
the fuse carrier shouldn't be within reach of pupils either. So you
could use a FCU at high level with a keyswitch lower down, which might
keep everyone happy.

The gridswitch fuse carrier is retained by a screw,
so you need a screwdriver to take the fuse out.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]