Kiek šildymo vamzdžių turi džiovinimo linija?

A drying line usually has 39 heating tubes. The power of each heating tube is 2KW, the total power is 78KW, and it uses 380V power supply. When calculating the required cable cross section, considering that the current corresponding to 78KW is 156A, under three-phase power supply, at least 35mm² cable is required.