Feeders Can be derated by number .551.73 Table.
Is it one feeder when you use pass thur lugs at each pedestial??or go by number of Pedestial?? I'd say 3 pedestails = 80% on feeder.
Also when you have 3 and use 80% do you still have to go by 125% load for continous duty??Another words (load 9600VA x 3 = 2880 x 80%= 23040 Divided by 240 = 96 amps.
then 96 x 125 % continious duty = 120 amps. I think you stop at 96 amps.
This is using Pass thur lugs at each Pedestail rated for amperage passing thru.