Ok this should be good.We have 2 37.5 kva xfmers taking 575v 3ph down to 480v 3 ph.The info on the xfmer says kva of both xfmers times 2 times 5 times .86 total= 324 amps primary the secondary 388 amps.My questions are in the wire sizes we were told to use and ocp.They said 500 kcmill.I figured 600 kcmill primary. And 450 ocp on the pri they said 400 Should the secondary condutors be rated for the avalible 388 x 1.25 or the load calculated being used by the machines. The load panel is 400amp panel no ocp inside.Or if someone has a sugestion I`d love to hear the alternatives for this job.
