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aus+uk / uk.d-i-y / Re: Why do circuit breakers go up for on and down for off?

Re: Why do circuit breakers go up for on and down for off?

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https://www.novabbs.com/aus+uk/article-flat.php?id=88948&group=uk.d-i-y#88948

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Date: Sun, 19 Feb 2023 08:38:09 -0800 (PST)
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Subject: Re: Why do circuit breakers go up for on and down for off?
From: tabbyp...@gmail.com (Animal)
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by: Animal - Sun, 19 Feb 2023 16:38 UTC

On Saturday, 18 February 2023 at 20:09:39 UTC, SteveW wrote:
> On 18/02/2023 15:05, Max Demian wrote:
> > On 18/02/2023 13:14, The Natural Philosopher wrote:
> >> On 18/02/2023 12:43, Max Demian wrote:
> >>> On 18/02/2023 00:29, Commander Kinsey wrote:
> >
> >>>> Mains was always AC wasn't it?
> >>>
> >>> If course it wasn't (in the UK). Mains was AC or DC, and 120V (or so)
> >>> to 250V (or so).
> >>>
> >>
> >> Mains was always AC post WWII and probably post the advent of consumer
> >> tube radios and IIRC was always 240VAC post WWII.
> >>
> >> "The Electricity (Supply) Act 1919 merged the 600-odd local generating
> >> companies into area boards, who in turn were centralised into the
> >> Central Electricity Board by the Electricity Supply Act 1925. That is
> >> when the voltage was standardised at 240V, and the National Grid created.
> >
> > And then the EU stole ten of our good, English volts!
> >
> > Have we got them back yet?
> No they didn't. The reference simply changed to 230V, so that 220V and
> 240V countries could use the same, single design of 230V equipment,
> designed with a wide enough tolerance to cope with the lowest permitted
> voltage on 220V systems and the highest permitted voltage on 240V
> systems. The voltage supplied did not change.

never ceases to amaze me how many can't understand that.

Subject	Author
Re: Why do circuit breakers go up for on and down for off?	Animal