"but you want to stay inside the 45amps limit.
Not really
You want to stay within the WATT limit on the input side for the operational voltage 12, 24, 36, or 48" - the controller will stay with the 45 amp limit input watts output amps
Argggh! But you said if you go close to the 45 the controller will heat up and you want to stay well below that limit.
Me personally I would go with the 60 amp controller if I had 600 watt array in a 12 VDC system - yes I said they heat up etc.. I design my systems on the conservative side. AM Solar and many others do not they sell 600 watt arrays (6 of their 100watt panels) hooked up in parallel with a 20Voc using the 45 amp version controller. For me that's not a good design
Sticking with our discussion the rated max array size for the 45 amp 12 Volt operation systems is 600 watts - so we have been using that as the figure
Now you don't care if you go over the 45?
You cannot go over the 45 amp it is limited by the controller
Remember input watts out amps
I meant just use bigger panels at the same Voc to get more wattage as one choice.
I understood buy had to comment - thought you had some magic powers and could make a larger panel
