The influence of mains voltage on audiophile equipment

The thread starts as follows: I live in N Wales and the local distribution company is Man Web. I have spoken to them as my household voltage is between 245 to 252vac. they tell me they peak at 253vac. Most modern equipment I believe is rated at 230vac with a 10% tolerance(The EU runs on 230v apparently), which would indeed go up to 253vac.

I have read though that a 230v transformer will run at a higher temp when on 250v mains. I am curious as I have just had a power supply burn out (230 rated) and wondered if there was any connection.  I am not an electrical engineer and wondered if anyone could enlighten me. Also I would be very interested to know what the voltage is in other parts of the UK. If you have a figure please post.

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