I read the result wrong. 2s 2p works fine for 4 x 445 watt panels.
Classic Sizing Tool
PV Module Data | | |
| Power | 445 | Watts |
| VOC | 48.9 | Volts |
| VMP | 40.9 | Volts |
| ISC | 11.54 | Amps |
| IMP | 10.89 | Amps |
| VOC Temp Coef % | 0.33 | C |
| VMP Temp Coef % | 0.45 | Amps |
Environmental Data | | |
| Coldest Ambient Temperature | -22 | F |
| Hottest Ambient Temperature | 104 | F |
| Nominal Battery Volts | 24 | Volts |
PV Array | | |
| Number Of Modules In Series | 2 | |
| Number Of Parallel Strings | 2 | |
| Total Modules | 4 | |
| Rated PV Array Power | 1780 | Watts |
| Anticipated Array Power @ 104 F | 1660 | Watts |
| Rated PV Array Current | 21.78 | Amps |
| Battery Charging Current @ 28.8V | 61.8 | Amps |
| VMP (Maximum Power Point Voltage | 81.8 | Volts |
| VOC (Open Circuit Voltage) | 97.8 | Volts |
| VMP @ -22 F | 102 | Volts |
| VOC @ -22 F | 115.6 | Volts |
Charge Controllers | | |
CLASSIC 150/LITE CLASSIC 200/LITE CLASSIC 250/LITE
| Max Operating Voltage | 150 | 200 | 250 |
| Max None Operating VOC (HyperVOC) @ 48V Nominal Bat Voltage | 174 | 224 | 274 |
| Maximum Number Of Modules In Series Configuration | 2 | 3 | 4 |
| Max Number Of Modules In Series Using HyperVOC | 3 | 3 | 4 |
| Max Allowable Output Current Per Classic Based On This Current | 94 | 74 | 62 |
| Max Allowable Wattage Per Classic Based On This Configuration | 2700 | 2123 | 1779 |
| Present PV Array Wattage Of This Configuration | 1780 | 1780 | 1780 |
Design Check | | | |
| Max VOC | OK | OK | OK |
| Temp The Classic Enters HyperVOC | -214.6 F° | -493.6 F° | -772.6 F° |
| Array Power (Wattage) | OK | OK | EXCESSIVE |
| Classics Required | 0.7 | 0.9 | 1.1 |
NOTE: MidNite Solar recommends a second controller be added after 1.2
WARNING: MidNite Solar makes no representation, warranty or assumption of liability regarding the use of the String Calculator. This tool uses data provided by other parties (such as PV module specs) and makes calculations based on assumptions which may or may not prove to be valid.
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