A. Where is the solar power system used? How is the solar radiation in the area?
B. What is the load power of the system?
C. What is the output voltage of the system, DC or AC?
D. How many hours does the system need to work every day?
E. How many days does the system need to supply power continuously if it is rainy or rainy without sunlight?
F. For the load, resistive, capacitive or inductive, what is the starting current?
G. the number of system requirements.