On 4-6-2009 11:41, Invisible wrote:
> OK, so what *is* the correct mains voltage in the UK?
> 
> I was always taught at school that the mains was exactly 250V. But I 
> can't find any documents anywhere which claim that this is the case.
> 
> According to Wipikedia (which is never wrong), the original 
> specification was
> 
>   240V +/- 6%
> 
> This was then revised to
> 
>   230V +10% / -6%
> 
> and then revised again to
> 
>   230V +/- 10%

IIRC it used to be 240 (or perhaps 250) for some islands and 220 for the 
mainland of Europe. The 230 is the result a committee trying to 
standardize the EU.

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