Schematic of a single phase transformer with single coil primary and three separate two-wire secondaries.
The secondaries are isolated from each other [individually wound to the core] and have no center taps.
Note polarity marks on all coils are on one end only [typically on a certain #1 end].

Any comments???

Scott SET...posted 06/23/01
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Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!