Your inverter has what is known as "pass thru" current. In other words, it is the TOTAL amount of current that can run through the inverter and it cannot be exceeded. The output from your inverter is fed to several different 15 and 20 amp circuits. Some, like mine, power the microwave also.
In any case, you have two circuit breakers on your inverter and they are each equal to 1/2 of your TOTAL pass thru current. One of these two circuit breakers could easily be tripped if your TOTAL draw from several different outlets fed by your inverter exceeds 1/2 of the "pass thru" capacity.