How to connect the ground wire at home

When you say ground wire, you should mean protective ground wire.

It depends on where you live. Most cities are buildings now. Regular developers connect protective grounding to the distribution box of every household, and every three-eye socket has protective grounding. For the real estate developed by informal developers, it is necessary to open the cover of the distribution box and check whether the incoming wires of the distribution box are three wires, one of which is connected with the shell of the distribution box. Usually, this kind of wire is a two-color wire (there are two colors on the wire), and there are many wires connected to it at the same time.

If there are only two incoming wires, there is no protective grounding wire. If you live on the first floor or build your own house, you need to do your own grounding. Grounding electrode is more troublesome to do, and it is more difficult for ordinary families to do it according to grounding standards. It is really necessary to do it. If the floor is high, the grounding electrode should be made first, and the wire not less than 4 square millimeters can be led to the home. When the protective grounding electrode is used, the grounding resistance should not be greater than 10 ohm.

The protective grounding must not be connected to the steel water pipe, which is very dangerous. The leakage of other people's household appliances will cause the shell of your household appliances to be charged!