Designer69
Senior Member
the new 400a mcb panel would need to be within 10 feet of the xfmr secondary terminations.
your cleanest way is, install new fused disconnect switch on xfmr secondary, go to a wireway then to your 400a mlo and your existing 225a mcb panel.
your cleanest way is, install new fused disconnect switch on xfmr secondary, go to a wireway then to your 400a mlo and your existing 225a mcb panel.