What size of cable to use for electric car charging piles

China [CN]

Charging piles are a very common energy supplement nowadays, but there are still a lot of people who don't know how many square feet of cable are needed to install a charging pile. The thickness of the harness of the charging pile is not uniform, but mainly depends on the storage capacity of the charging pile and the voltage that the harness is subjected to when circulating electricity.

First of all, the charging pile has single-phase and three-phase, regardless of dual-phase or single-phase, first of all to convert to AC incoming current how large. For single-phase charging pile (AC charging pile) I=P/U; for three-phase charging pile (DC charging pile) I=P/(U*1.732). From this, it is derived that the cable is selected according to the current magnitude.

Secondly, cable selection can refer to relevant manuals or regulations such as:

(1) Single-phase charging pile is generally 7KW (AC charging pile) I=P/U=7000/220=32A Copper core cable of 4 square mm should be used.

2、Three-phase charging pile (DC pile)

15KW Current 23A Cable 4 square mm;

30KW Current 46A Cable 10 square mm;

60KW current 92A cable 25 square mm;

90KW current 120A cable 35 mm2;

All charging posts should have zero and ground wires. So single phase should have three core cable and three phase should use five core cable.

For further information, please visit or search for cable specifications and quotes: https://www.omgevcable.com