Here's how I got it figured:

First the 240kva load would be 578a per phase.

Next I took the 34kva and the 41kva, that would be 34kva on a 240 single phase load, so I would have 141a additional on those perspective phases, leaving 7kva, on the 120v load.

So phase A is 578+141=719a
B is 578a
c is 578+141+58=777a

777a X 125%= 970A = 1000a Breaker for ocp


Shoot it down, and tell me where I am going wrong pls...


Dnk..