We recommended a factor of safety of at least 1 25 meaning you would multiply the current from your panels by 1 25 and then compare that to the 30 amps.
How to match solar panel with battery.
26 45 amps x 1 25 33 amps and would be too much for the controller.
Solar panel output is measured in watts.
Match the solar panel to the battery.
Then the moment the cloud dims in which the solar panel can t produce enough voltage the relay will change the inverter s source which is from solar panel to battery.
For example five 100 watt panels in parallel would be 5 29 x 5 26 45 amps.
The vmpp of your array or single panel should be 1 15 to 1 3 times the nominal battery voltage.
The inverter will get the source from the solar panel while the battery is being charged.
Solar panels you should design your system such that the voc voltage open circuit of your solar panel s are between 1 4 and 1 8 times your nominal battery bank voltage.