NEC says use a controller with a rating 25% more than your isc..not working amps which is less than Isc
I don't know how the output would ever reach that point
Unless maybe there was a dead short on the output at STC..?
And even then you could not exceed Isc
And morning star says the controller will handle 130% of the rated input and taper the amps
Which means NEC wants you to use 36amps Isc not the panel working amps for a 45amp controller that the MFG says will handle 58 amps input
Now I believe Morning star, I would have no qualms connecting 700w aka 41amps to that controller
But I would have second thoughts about some of these other controllers
The NEC and controller MFG are not using the same play book
There has got to be done middle ground for quality and price point
How long until the market sorts itself out
