Voltage / currnt

Output / Illumination

Output Temperature

Left side graphic shows characteristics of PV panel. It usually shows at 25 degree C. Max operation point is the most efficient to generate power. Charactristics curve move up and down depending upon illumination(rain, cloudy or sunny.) and it also move left and right depending upon temparature. 　
As you can see above, Voltage and current charactristics curve changes in variety of fators. You have to think about this when you select rating currnt of circuit breaker. We recomend that you get panel data from manufacures.

Generation power depending upon weather

Output curve

Generated power really depends on weather fators. It may gerenate 10% or less rainy days or night. This makes difficult condition to choose circuit breaker. Rating current refered maxinum current does not work if SPD becomes short circuit condition by lighting strike on rainy days, it does not work. Internal disconnector must cover this case to protect circuit.