If you have a standard delta connection then you will only have one
voltage available. Without other transformers of course.
With a 3 phase wye connection (which I assumed that it is if you have
two voltages available) you will not have 220 volts and 120 volts at the
same time. Unless of course there are other transformers involved.
But from a simple wye connected 3 phase line the relationship between
one leg and two legs is 1.732.
So if you have 220 volts across two legs, then across one leg you will
have 127 volts. If you have 120 volts on one leg then across two you
will have 208 volts.
73
Gary K4FMX
Carlos Augusto S. Pereira wrote:
> Yes, Dave is right. The laundery machine is connected to a 220v outlet. The
> lower voltage measured is 217 and the highest is 222.
>
> 73 Carlos PY4RO
> ----- Original Message -----
> From: Wt8r@aol.com
> To: garyschafer@attbi.com ; carlos.augusto@superig.com.br ;
> amps@contesting.com
> Sent: Monday, April 14, 2003 12:28 AM
> Subject: Re: [Amps] Question about ampifiers
>
>
> In a message dated 4/13/03 10:16:27 PM Eastern Daylight Time,
> garyschafer@attbi.com writes:
>
>
>
> Hi Carlos,
>
> If you are getting your power from a 3 phase line, and you have 120
> volts then there should be only 208 volts across the two phases. I ran
> into that problem at a military installation I was at one time. There
> was no 240 volts to be had. Only 120 and 208 or 3 phase. The amp would
> not work well on the 208.
>
> 73
> Gary K4FMX
>
>
>
> It depends on the configuration of the transformer feed the outlet, either
> "Y" or "Delta". It is conceivable that a small transfomer could be obtained
> to perform the conversion and thereby raised the voltage.
>
> 73 de
>
> Dave, WT8R
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