On 10 Aug, 11:19, Dave Osborne wrote:

They're harder to bolt-crop.

That just makes the idiots work harder, when the point is to stop
them behaving as idiots at all.

Many isolator switches look like this:
http://www.tlc-direct.co.uk/Images/P...3/EULB204P.JPG
The padlock goes through a plastic shield around the switch. Now
who's seen these in service where someone has cut the _switch_ to
remove a padlock(?!?!) because it's easier!