I have an well point pump which is connected to an outside socket. The cable feeding the existing socket, plug and pump comes out of the wall of the house on which it is mounted. The socket is really old (decades) and the housing is made of metal. It has a turnable switch which turns the power on or off. It also has a screw in disk which holds the plug into the socket around its outside.
The electrician who was paid to perform a CoC inspection reckons that it needs to be replaced with an outside plug to meet the CoC standards.
I'm curious as to what sort of outside plug is the correct one to replace it. And what else needs to be done to make it (or other outside sockets) standards compliant.