If the 7kw charging post is indoor with a pipe, 2.5 square BV wire is enough. 7KW if the current is about 14A for three phase, the switch can choose 25A. If it is single-phase, the current is about 35A, the air switch should choose 40A and above.
As the energy replenishment device of electric vehicle, the charging performance of electric vehicle charging post is related to the service life of battery pack and charging time. This is also one of the aspects that consumers are most concerned about before purchasing an electric car.
Achieving fast, efficient, safe and reasonable power replenishment for power batteries is the basic principle of EV charger design, in addition, the applicability of the charger to various power batteries should be considered. The scheme of the charger in the ground charging station, the charger consists of a rectifier that can convert the input AC power into DC power and a scheme power converter that can adjust the DC power of the charger in the ground charging station. By inserting the plug with a wire into the socket matching on the electric vehicle, the DC power is input into the battery to charge it.
Of course, according to the actual situation of the user to choose the appropriate specifications of the charging cable, please visit or search for advice more content: https://www.omgevcable.com