Protection against overload current

[SUNRAY]

Yes, I did think of that 'other side of the coin', but I was responding to the comment which I took to be referring to repeated unplugging/re-plugging 'loosening' things.

As for that 'other side of the coin', although what you say is undoubtedly true, it's quite often (literally) years between occasions when some of my kitchen/utility room appliances get unplugged (often probably only a handful of times in the entire lifetime of the appliance) and, although the pins don't stay 'bright';, I've never experienced any electrical issues as a consequence.

Kind Regards, John

I know all about staying plugged in, our spare bedrom which is always called the office was set up as an office at one end and a radio studio the other and not a plug was moved between 1994 and 2012, the ham radio shack is basically running on 3 extension leads and they have not been unplugged since 1994, however a 4th was removed last year and the plug [and hence I assume the socket] was in a really grotty state. all of them have had big loads on an ocassional basis without any apparent problem.