xfmr question?

[steveng]

30kva 3phase xfmr
primary is 480, sec 208/120 wye
feeding 3 100 amp 3 phase load centers
loads consist mostly receptacle circuits/ computer loads
line side feeder ocpd is 40 amp
the xfmr is barrel lugged x 3 for secondary taps

question? what size ocpd on panels

 

[eric stromberg]

30kva 3phase xfmr
primary is 480, sec 208/120 wye
feeding 3 100 amp 3 phase load centers
loads consist mostly receptacle circuits/ computer loads
line side feeder ocpd is 40 amp
the xfmr is barrel lugged x 3 for secondary taps

question? what size ocpd on panels

This transformer has a FLA of 83.3 Amps on the secondary. Why is it feeding three 100 Amp load centers? :-?

Are these single phase (2-pole), or three phase load centers?

 

[steveng]

eric,:grin:
3 phase, we are using 3 pole 30 amp mains on 2 new panels
and fusing the 3rd existing panel with a 3pole 30amp disco