The AC input current limit is 50 amps and this is a combination of the power that it can carry through to the AC loads and the power that is is using for charging the batteries. The limit can be permanently adjusted in the software of if you get one of the remote controls available it can be adjusted on the fly as needed.
The maximum amount of power that it can consume for charging is limited by its 80 Amp charge rating and so that translates to approximately 8 Amps at 120 volts. The maximum charge current can be adjusted permanently in the software or on the fly as described in the paragraph above. When an input current limit has been set in the remote the charge current will automatically adjust to keep the total consumption within the limits set.