whisky-dave wrote:

Andy Burns wrote:

It's an inlet, if it was the opposite gender, the trailing lead would
have to have live pins ...

Yes and inlet the 3 pin socket is used to plug in an IEC lead the
socket end of that lead plugs into a socket on the PAT tester.

The Pins DO NOT/should NOT supply voltage in a IEC lead and

Presumably the PAT tester supplies voltage to a 13A socket, and a
13A-C13 lead under test is 'looped' back to the C14 inlet, so the
tester can check continuity?

I don;t see such things being called fixed plugs and that is why I
asked what a fixed plug is.
Presumably to avoid confusion where plugs are usually male and sockets
are usually female? The C13 lead is overall "male" because it plugs
inside the female C14 socket, but the individual terminals are female in
the lead and male in the inlet?