How many output amps is a 75 kva 208v-480v?

1kw=1.25kva

by this relation 75kva=60kw

p=1.732*380*I*1

I=60000/1.732*380*1

I=91Amps

Power factor is irrelevant to this question. You don't need to convert the kV.A rating to kilowatts, simply divide 75 000 V.A by (1.732 x 380). The answer is 114 A.

This, of course, assumes that the question refers to a three-phase generator and that 380 V is the line voltage.