In the middle is the ground wire, the left neutral wire, and the right live wire.

It's the same when connecting to AB, AC, and BC.

A, B, and C represent the three phase wires of the three-phase power supply. Note that when connecting the equipment, you must pay attention to whether the equipment uses 220V or 380V. If you connect it incorrectly, the motor will burn out and cause a fire.

Furthermore, if too many devices are used, the three-phase load balance must be ensured, that is, the device loads on the three connection methods AB, AC, and BC must be the same.