"Jim Gregory" <jim.greg@[EMAIL PROTECTED]
> wrote in message
news:jKE%j.20988$Zs3.14821@[EMAIL PROTECTED]
>
> "Eeyore" <rabbitsfriendsandrelations@[EMAIL PROTECTED]
> wrote in message
> news:483EA2A2.461A042@[EMAIL PROTECTED]
>>
>>
>> wb wrote:
>>
>>> Hi,
>>>
>>> When I was a kid in the 60's I distinctly remember measuring the
>>> line voltage at the wall sockets with my Simpson 260 and it measured
117
>>> - 120 volts AC. I measure pretty much the same where I am now. Line
>>> voltages vary from place to place. the voltages have been called 120,
>>> 115, 117 and 110 in my lifetime.
>>
>> The 'official US voltage is 120V.
>>
>>> 220 has been called 220, 230 and 240.
>>
>> No.
>>
>> In mainland Europe the mains was typically 220V and in the UK it was
>> 240V.
>>
>> For 'EU harmonsation reasons' it's been decided to call it 230V
although
>> it
>> may now measure a nominal 220, 230 or 240V since few places have
actually
>> changed anything ! Where I live it actually measures 250V.
>>
> You must live close to a substation's secondary. Voltage Harmonisation
> levels are legal entities. How often do your 230V tungsten lamps die?
Can
> you not sue the Board for device-failure costs if your single-phase
busbar
> exceeds 6% of the advertised 230V, ie, when reaching 244V or more?
> Jim
Yes. The provider has a legal responsibility to keep both voltage and
frequency within the limits stipulated I thought I had read, Jim, that
the
limit was 230V-6% / +10%, so at 253V in the UK still falls within the
"limits of harmonisation"
My workshop is situated in an old undustrial area, and in
winter especially, the load is considerable.Despite this the
voltage varies from 230V by only 2V or so. So about 1%
Iain
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