The wiring method of 380V three-phase electricity is: green wire, red wire, blue wire is connected to the live wire, and the yellow wire is connected to the ground wire (ground wire neutral).
The socket used for the 380V voltage is a four-conductor socket. In addition to the three colored wires red, green and blue, which are respectively connected to the three-phase live wire, the third wire is. connected to the functional ground wire (neutral wire), let's see how to wire it.