SJT ;

I have uploaded some drawings to the Technical Reference Section, which cover Transformers and Feeders + OCPDs.

Please refer to the following linked page, for a few examples per your scenario:

Transformers & Feeders: 3 Phase 4 Wire Wye

*** NOTE ***

Click on the underlined text above, to open that linked page.

BTW, Additional setups - such as Deltas, 3 Phase 3 Wire Single Voltage Systems, and 1 Phase Systems, are available for viewing at the Technical Reference Section.

Refer to the Technical Reference Section Main Page
for additional linked pages.

Scott

Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!