How to calculate the maximum current of non-PV lines

The maximum current is: maximum output current × 1.25

For example, the maximum output current of a 4kW inverter running on AC220V is 16.7A. According to the above formula, the rated capacity of the cable and overcurrent protection device connected to the inverter output circuit is at least 16.7A × 1.25 = 20.9A

最大电流为：最大输出电流×1.25

例如，一个运行于AC220V的4kW逆变器最大输出电流为16.7A。根据上面公式，连接在这
个逆变器输出电路上的电缆和过电流保护装置额定容量至少为16.7A×1.25=20.9A