> OK, so what *is* the correct mains voltage in the UK?
Get a multimeter and a car and you could probably make a nice picture :-)
> I was always taught at school that the mains was exactly 250V.
I never heard that before.
> and then revised again to
>
> 230V +/- 10%
>
> which would therefore allow anything between 207V to 253V.
>
> So does that *really* mean that all UK equipment is supposed to work
> with absolutely any voltage that falls between 207V and 253V?
Yes.
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