looking to upgrade my panel from a 100amp service, and checked out the wire to see what I could get away with. turns out the cable says:
KAISER KATHENE (UL) SPEC 400 AWG AL 500 VOLTS TYPE XHHW
so, a little googlefu returned that this may be 400kcmil wiring, which is rated up to.... 280amps?! that can't be right? did I miss something here?