First, cable current carrying meter ---- calculation formula
The cable is used to transmit electrical energy, and the electric power is calculated as
W = 1.732 * U * I * COS φ
Where: W-- electric power, unit kW
U-- voltage, unit kV
I-- current, unit A
COSφ- system natural power factor
It can be seen from the above formula that to transmit electrical energy, there must be current flowing through the line, and the greater the current through the line, the more electrical power will be transmitted. The current carrying capacity refers to the current carried by the line wire. When used, the maximum load current required by the load must be less than the long-term allowable carrying capacity of the wire in the air. For example: 25 square millimeters of copper core wire, the long-term allowable carrying capacity in the air is 105A, when your main equipment is running, the running current can only be less than or equal to 105A, never greater than 105A.