cctalk Digest, Vol 88, Issue 2

[Patrick Finnegan]

I mean if you want to add a transformer to it you can do anything to want
with voltages. It doesn't provide you 120V from the service transformer.

Corner grounded Delta gives you a grounded 3 phase service (safer than
ungrounded) with one less wire than high-leg delta (3 instead of 4), making
it cheaper when the wiring was the expensive part.

Patrick Finnegan

On Tue, Jan 4, 2022, 22:16 Grant Taylor via cctalk <cctalk at classiccmp.org>
wrote:

> On 1/4/22 7:43 PM, Patrick Finnegan via cctalk wrote:
> > It's the even more obscure corner-grounded delta, which requires even
> > more care and can't provide 120V power, since the phase to ground
> > voltage is 240V.
>
> Why couldn't 120V be derived from either of the 240V phase and the
> grounded corner via a 2:1 transformer?
>
> I'm not sure how to get the two opposing 120 legs, or if they are
> strictly required in this instance.  I would wonder if it would be
> possible to ground the center tap on the secondary side of the 2:1
> transformer mentioned above or not.
>
>
>
> --
> Grant. . . .
> unix || die
>