One, what is the role of the ground wire
1, the general electrical appliances will be connected to the wire and the motor casing, so that the main role is to prevent electrocution accidents, and at the same time effectively protect the family's electrical safety.
2, if the electrical equipment leakage occurs, but as long as the ground wire is connected, then the current will be introduced directly into the earth, and part of the current will pass through the human body, but is a safe value for people's lives will not cause danger. So one of the most important role of the grounding wire is to be able to prevent people from being electrocuted to death.
Two, how to access the ground
1, some electrical appliances at home above the socket there is a terminal is connected to the ground, such as refrigerators or washing machines, its metal shell can be accessed to the ground.
2, then we can use a steel pipe buried in the earth, connected to the wire, and then finally connected to the distribution box, respectively, and the various outlets connected to the ground will be able to access.
Three, the socket does not have access to the ground how to do
1, if there is no access to the ground, we can make a simple ground, will be able to solve the problem. Need to prepare the relevant materials, such as an angle, and then to prepare three, the length of each to reach 1.5 meters, but also to prepare a number of wires as the ground to use.
2, the next need to dig a pit, from the corner of the wall is about 2 meters, to dig a height of 2.5 meters, the width is not much to ask, to be able to put an angle can be.
3, you can sprinkle some salt in the pit, the purpose of doing so is to reduce the resistivity of the soil, and then to put the flat steel into the angle steel above, the two steel pipes connected.
4, the last step is to be wired, you need to punch holes to access the wire, and then introduced into the distribution box, this way it will be able to directly connect with all the sockets at home.
Summary: some appliances at home need to be connected to the ground, in order to play a protective role. If there is no ground wire, will bring endless trouble, the consequences are no one can afford.