I'm having 2x150W (Vmp=17.9V and Imp=8.4A) panels installed IN SERIES to my boat (12V batteries), which is much more energy than I need.
I plan to use MPPT 100/20, which is limited at 290W in its input and 20A at its output.
Victron's spreadsheet calculator shows at 25C a theoretical maximum output current (at MPPT) of 24.5A, limited to 20A.
At 5C, this same current would go up to 26.2A.
I'm totally OK with not being able to use the full 300W power of my panels (MPPT limit=290W).
But my concern here is possibly causing some long term damage to the controller by exploring this 20A output limit too often.
Should I avoid this situation to keep the controller safe and healthy?