Once upon a time on Tue, 22 Aug 2000,at 6:19pm Mark Rode wrote about:...
> 120 >> 12 volt transformers for PC devices such as hubs, speakers and
> modems never have polarized plugs.
> However I have always made sure that the transformers are plugged in at the
> correct direction relative to the printing on the device so as to put the
> hot lead on the right. This is not always easy to arrange without loosing
> some outlets on a surge protector or UPS.
>
> Because the transformers never have polarized plugs I am not sure that this
> is in fact necessary ?
> Is this a good idea or does it matter ?
>
> Thanks
> Mark Rode
It will not make any difference since you are connecting a transformer
which will provide isolation between the device being powered and the 120
volt circuit. Otherwise there would be a polarized plug and ground on
these transformers.
ken
Kenneth J. Kovler
o http://www.bcpl.net/~kkovler
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