On 13/07/2019 09:59, Chris Green wrote:
Harry Bloomfield wrote:
R D S wrote :
Bought some sockets today, put the 2.5mm in, tightened the screw, the cable
promptly fell back out as the screw left too much room at either side.

Poor design. Better quality ones have a screw which can almost fill the
terminal hole if screwed all the way in, no space for a cable to
escape.

There seem to me to be very few well designed screw down terminals in
most 'standard' electrical items.

Many in Consumer Units are far too easy to get the wire/bus the wrong
side of the clamping plate. The ones in plugs and sockets often
suffer from the problem the OP describes. Many in junction boxes have
silly round ended grub screws that seem to be the most un-useful shape
they could possibly be.


And you cannot get the bus bar the wrong side of MK and Hager MCBs.

--
Adam