On May 29, 11:29�pm, (Don Klipstein) wrote:
In article , John Grabowski wrote:
*As I recall on a delta connection one of the phases will have a higher
reading to ground than the other two. �On a Y connection the reading to
ground will be the same. �In NJ, Public Service Electric and Gas will not
permit that high leg to be installed in the same panel as the neutral. �
The NEC allows it though.

� What you are describing sounds to me like a 240V "star" system with high
leg, a variant of Y. �Two of the phases are 240V center tap with the center
tap connected to neutral. �That provides four 120V legs. �The third is 240V
with one end rather than the center tap of that transformer's winding
connected to neutral to provide the "high leg". �It is possible to use the
center tap of that to provide a fifth 120V leg.

--
�- Don Klipstein )

What you are describing is called a zig zag connected transformer,
common in the US but rarely used in the UK except for producing a
phase shift for rectification purposes. (DC output more ripple free )
http://www.langlois-france.com/pdf/ZIG-GB.pdf