Thanks for comments.
The main issue I am looking to solve is the solid neutral connection between two 3ph/4w individual service switchboards through a common generator. Although this technically is an additional neutral-ground connection (code violation) in reality is it an issue?
Since the...
Thanks alehman,
The application is not a double ended service, however, using partial differential ground fault relaying could effectively compensate for the solid neutral connection between the two switchoards through the generator paralleling swgr if 3ph/4wire systems are used.
After further...
Thank you for your comments.
1) Local inspectors have indicated the grounded neutral must remain at service switchboards since fed from grounded wye transformer (250-24B)
2) If switchboards remain as 3ph/4w with no neutral loads. I would plan to connect the paralleled generators to each...
Background: I am involved with an existing data center project with following equip:
(1) 12.47kv / 277/480 delta wye utility transformer connected to 3ph/4w, 3,000A service switchboards "1" and "2"(swbd 2 currently fed from swbd 1 via breaker)
Currently two generators (only one on-line at a...
