Next message: Norm of Bandersnatch: "lv-ab: ER Casualty Two"
I had just this situation at Green Cove Springs marina for many years.
Fortunately my 240 volt gear tolerated the low voltage, as Arild says
around 185 volts, but some of my neighbors were not so fortunate.
Norm
S/V Bandersnatch
Underway for Norfolk VA
>
> REPLY
> There is an additional undocumented featuer availabel with this model
> transformer.
> For those people docked in marinas fed from 3 phase power transformers,
the
> so called 220V in a50A 4 wire socket is often only 208V nominal and drosp
> way down to 185 durin gpeak load periods.
>
> If you take the Charles transformer and wire it in reverse so that you use
> the two 15% taps on the secondary side to L1 an dL2 on the shore cord side
> then the ratio change will produce an honest 220V from the 208 supply.
>
> If the input side has the center tapped winding then this center point
> becomes your neutral for 120V.
>
> Arild
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