Are they worried about the meter cans, or about the rating of the breakers after the meter cans?
Obviouslly, if they have a paralleled network of xformer secondaries, they couldn't expect everyone to have less than 10KAIC at the meters.
I think they may just be wanting a series rated listing between your 400A breakers, and the breakers in the meter cans.
If thats true, your 400A breakers would just need an AIC large enough for the calcualted available current (I think I saw 22KAIC?), and they would have to be series listed with the breakers in the meter cans.
That should be very easy to do.
Obviouslly, if they have a paralleled network of xformer secondaries, they couldn't expect everyone to have less than 10KAIC at the meters.
I think they may just be wanting a series rated listing between your 400A breakers, and the breakers in the meter cans.
If thats true, your 400A breakers would just need an AIC large enough for the calcualted available current (I think I saw 22KAIC?), and they would have to be series listed with the breakers in the meter cans.
That should be very easy to do.