Oh, I don't doubt that - "people without the slightest understanding of what they are doing" do undertake electrical work. However, I don't think there's much mileage to be had by talking to such people about any sort of testing or testers!We do come across it.I'm maybe missing something, but I can't think of any way that it can be achieved by anyone with the slightest understanding of what they are doing.
That's true - but (just like the one I linked to) they almost invariably have a warning on the front about this 'inability' of the device (or any device). Perhaps they ought to put an asterisk or something next to the "wiring correct" to link it to the warning that an N-E reversal might be present (and not write the warning 'sideways')?I think the point raised about socket testers and N-E reversal is important because even with such an occurrence the tester reads "wiring correct".
Kind Regards, John