What is the load current of 4 square wires?

11 Feb.,2025

The two factors of current and voltage are critical to the influence of wires. If the voltage or current passing through the wire does not meet the standards, the wire may be damaged, thus affecting its normal operation. So, how much current can a 4 square meter wire generally carry?

 

    The two factors of current and voltage are critical to the influence of wires. If the voltage or current passing through the wire does not meet the standards, the wire may be damaged, thus affecting its normal operation. So, how much current can a 4 square meter wire generally carry?

    The load capacity of wires is not only related to voltage, but also to current. Different voltages and currents will cause differences in the load capacity of wires. The current that a 4-square-meter wire can carry is related to the core material and the cross-sectional area of the wire.

    The allowable long-term currents of copper-core wires with cross-sectional areas of 2.5 square meters, 4 square meters, and 6 square meters are 16A-25A, 25A-32A, and 32A-40A respectively; the allowable long-term currents of aluminum-core wires with cross-sectional areas of 2.5 square meters, 4 square meters, and 6 square meters are respectively The long-term currents are 13A-20A, 20A-25A, and 25A-32A respectively.

    Let's take computers in Internet cafes as an example. One computer consumes 200~300W (about 1~1.5A). If there are 10 computers, a 2.5mm² copper core wire is needed to supply power so that the wires are not exceeded. Load usage.