I have a
600v three phase gen, 60hz, 40kw, 50kva, 8pf
Class h insulation
And a
Three phase transformer
45kva, 600v primary
208vy/120v secondary
4.8 impedance
Conductor temp at 170 deg.
Out of the secondary on the transformer I will go to a three phase panel.
I need to know the conductor size between the gen and the primary of the transformer and between the secondary of the transformer and the panel.
Also any tips tricks or hints would be greatly appreciated
All runs are less than 5 feet.
Thanks in advance

Are you seriously asking this question on a Home & Garden message board?

There is a whole section in the NEC that will tell you how to size transformer conductors.

Read the Book!!

This is hardly a DIY question! Look online at NEC Section 450 and 455.