How To Judge the Neutral Wire and the Ground Wire?

Is there any difference in the color and diameter of the neutral wire and the ground wire? How to judge the zero wire and the ground wire in an irregular line place? If the neutral wire is reversed, what will be the consequences (such as a three-hole socket, in a three-wire four-wire power distribution system)?

Nowadays, in the three-phase five-wire power supply line, the colors of yellow, green and red are easy to distinguish (with an electric pen or a multimeter). Find the color of the wire from the neutral wire from the distribution box through the watt-hour meter. Or find it with a multimeter. The wire coming out of the ground terminal of the distribution box is naturally the ground wire. Mark the neutral wire and complete the wiring.

In the regular line, the ground wire should be a two-color wire, especially in the wiring of the three-hole socket. In this way, it will not be reversed for the neutral or ground wire, there will be no consequences.

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