Hello,
I have RB760iGS and the poe out connected to CAPac. If i have 3 CAP can all CAP not use external power? I mean 1st CAP power provided by RB760, 2nd CAP provided by 1st CAP and 3rd CAP provided by 2nd CAP?
No, PoE daisy-chaining has some limitations. Specs say that if using hEX PoE provided power adapter (24V), maximum output current is 1000mA which roughly translates to 24W. Single cAP ac consumes up to 13W, so in theory only single cAP ac can be powered off a hEX PoE port. In reality two will likely work, but 3 almost certainly not.
Even worse, OP has hEX S and it’s max PoE output is only 500mA.
Oh, indeed. In that case the only way to power more than one single cAP ac off that powered port is to use 48V power adapter (separate item).