Here’s another plugtop. When it was plugged into a socket it looked fine but as soon as we unplugged it there was a tell tale discolouring around the neutral contact.
Once inside the plugtop you can see more evidence of heat damage around the neutral contact. Again we cut the plugtop off and replaced it with new. A quick check of the socket it was in also showed signs of heat damage arounf the neutral hole. The client was advised to have the socket changed as it’s not clear which (Socket or plugtop) was responsible for damaging itself and the other.