I have an application to feed 200A 480Vac single phase (2 phases) from an MCC bucket to a single phase transformer. The MCC bucket available is a 6" bucket and is planned to be supplied with a 3 pole 200A circuit breaker. Due to space limitations and manufacturer primary wiring, I do not have access to the line side to wire the Phase A back through the Phase B Line side so all 3 poles will see load current. Is it acceptable to provide a secondary load center with 2 pole 480V OCP at the transformer location?
A picture on the bucket would be nice.
If I can make a wild guess what I picture and what you are trying to do is to feed you 1ph transformer from a 6" bucket with 3p200at breaker which is mounted horizontaslly. To supply power from the 3,p breaker to a 2ph transformer simply supply the transformer missing 2 of the load side poles. No need to make it more complicated than that which I think that you are trying to do. Also, the bucket should be removable anyway which you don't need to do to remove to access the load end terminals.
See once you did not include the KVA of a 1ph transformer I would like to understand th as t the 200a breasker's is correct for the primary of this transformer.
Please not that if is difficult to provide a specific and detailed answer when the information as provided is not very detailed asnd specific wher any response that has been provided is not correct for the actual application.