Oh don't worry I'm quite happy with cable of that vintage and happily admit some of mine are but I do a visual inspection every time they are used.Where is your sense of adventure
That particular cable I rejected before he put it down on the table.
In my situation it was a class 1 sound system in a 'village' hall for a speaker. The corner where I was allocated had no power, the person opening up (not sure if the hall hirer or some official) offered the 16A to 4x13A as the solution. I had been for a survey and took kit with me, by chance I had a drum of 1.5mm² blue 3183 which he was happy to pay for cost of cable and let me make the repair... during the hour of speaking and saved me from being too bored.So the big question is if the site where @SUNRAY was working was supplying a safe supply for @SUNRAY to use, not a clue what he was plugging in, did it need an earth, clearly using class II equipment is not a problem, if using class I equipment was the earth good enough for the equipment being used?
It was the usual 'used it for years without a problem' sort of conversation until I peeled of a section of outer followed by some of the green earth insulation. So yes I have given relief for the future but on the day it could have been a very different situation.So I am looking at it from the customers side, the guy was likely under pressure, and not an electrician, and possibly if like me had nothing or little to do we the pre event organisation. So was getting along as best as he could in a stressful situation and likely grateful that @SUNRAY took away some of the pressure of the day.