The percent impedance is how much current has to be applied to the primary to get FLA on the secondary. So if you're apply 100% to your primary, all you gotta do is multiply your secondary FLA by 100/name-plate impedance.
E.g.: 278A(100/4%) = 6,950A SCC
Yeah, you just stick a bunch of 2500A fuses together. :whistling2:Never seen a 7000A fuze before !
Any one else seen one?