[Boatanchors] Running European 230 VAC on our AC - clarification
Sheldon Daitch
sdaitch at kuw.ibb.gov
Mon Oct 22 04:56:07 EDT 2012
Glen,
let me clarify.
That reference of the neutral leg was in regards to the
neutral leg of the equipment, not the neutral leg of the power system.
In other words, a 230VAC appliance, as used in the 230VAC countries,
the safety ground goes to the safety ground. The hot leg of the appliance
cord goes to the 230VAC phase leg and the neutral leg of the appliance
cord goes to the neutral leg of the power system.
If that same piece of equipment is connected to a US 230VAC circuit,
line-neutral-line, then on the equipment cord, the safety ground is
connected to safety ground. The hot leg of the appliance cord is connected
to a hot line, 120VAC above neutral and the neutral leg of the appliance
cord
is connected to other 120VAC hot line.
I should have been clearer and instead of writing:
"but in the US, the neutral leg would be 120VAC above ground"
I should have written:
"but in the US, the neutral leg of the device would be 120VAC above ground"
Sorry for the confusion.
Bob is correct in what I meant by the comments on the autotransformer of the
stove. That situation - the common of the autotransformer was indeed at
240VAC
above ground, not the more normal situation where the normal of the
autotransformer
is connected to the neutral leg.
When I lived in Germany, the outlets were not polarized and it was very
easy to
plug in the autotransformers "backwards" placing the common leg at
230/240VAC
above ground.
On 10/21/2012 6:58 PM, Glen Zook wrote:
> I didn't interpret that way! His statement "but in the US, the neutral leg would be 120VAC above ground" is confusing because in the US the neutral leg is basically at ground potential.
>
> Glen, K9STH
>
>
> Website: http://k9sth.com
>
>
> ________________________________
> From: "WA5CAB at cs.com" <WA5CAB at cs.com>
> To: boatanchors at mailman.qth.net
> Sent: Sunday, October 21, 2012 10:32 AM
> Subject: Re: [Boatanchors] Running European 230 VAC on our AC
>
> Glen,
>
> What he said was that what should have been the neutral connection for the
> autotransformer (the I/O common) was connected to Line, not Neutral. Which
> put what should have been the Neutral connection for the internals at Line
> (120 RMS) instead of near ground.
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