On 07/05/2018 18:40, Harry Bloomfield wrote:
dennis@home submitted this idea :
Screw terminals always work loose which is why they aren't used on
important things. What was the last time you saw chock blocks on
aeroplane wiring?

Screw terminals are very common on mains wiring, from a few amps to
thousands of amps. Even crimped lug connections are held on terminals by
nuts and bolts.

Nuts and bolts aren't screw terminals and they use lugs not wires.
They are significantly different.