Jack the Lad wrote:
No electrician worth his salt would insert/tighten/remove cables on a
live circuit unless he has a death wish.

Nonsense!


Therefore,he should switch off
the supply and check that the circuit is 'not live' before commencing
work.

Sometimes you just *have* to work on live circuits, sometimes there just
isn't a choice. It isn't that dangerous.


Why then do I see electricians screwdrivers and pliers which claim to
be 1000 volts fully insulated,or are these made purely for the idiots
to use?

See above answer.

--
Grunff