Single phase

[masterinbama]

I have a 161 KVA 480 to 120/240 single phase transformer. I plan on feeding it with a 400 amp 480 2 pole breaker. On the secondary I am going to feed 2-200 and 1- 100 amp main breaker panels. And of course all of the necessary grounding and bonding on the secondary.Anyone see any problems with my math?

 

[augie47]

Math is fine. Slight concern about your primary being large enough considering inrush.
(you sure it's not a 167 kva, 161 is odd size..changes little, but odd)

 

[hardworkingstiff]

Sounds like you aren't even getting close to taxing the transformer. Depending on the load calculations, you may be able to get by with a 100KVA transformer. I agree with Augie, 161 (vs 167) sounds suspect.

 

[masterinbama]

It is 167kva. Poor light and my poor short hand on the walk through got me on this one.