The ground wire is a line in the home circuit, and it is also an extremely important line. It provides the last line of security defense in our circuits and allows us to be more. safe when using electricity. Safety, the installation of the earth wire in the domestic circuit is therefore an absolute priority. In fact, many people don't understand the role of the ground wire, much less how to properly ground it. So how to connect the ground wire correctly? Come take a look with me below!
How to properly ground the ground wire
1. The first method is to prepare a copper or aluminum wire with a skin , then connect one end to the ground The jack contact piece of the cord, and the other end is directly connected to the ground. If the mobile socket is connected to the earth wire, then an iron nail should be connected to the exend of the thread. It can be plugged in every time it is used, but it should be noted that you cannot touch the ground wire when turning on the power. is on.
2. The second is to use steel pipes or other metal pipes buried underground to serve as ground wires. As for which metal pipe to choose, you need to make a judgment based on the strength of the ground. Then between the distribution box and each use wires to connect the outlets so that the ground wire can be grounded.
3. The third method is to use various conductors, such as iron rods, copper rods, etc., and bury them underground with tools. The burial depth is 1.4 meters, which can be used as ground wires. . If you want to serve as a neutral line, you need to drive it into the ground about two meters.
A properly connected ground wire, in additionto play a protective role in our daily electricity consumption, can also act as a “lightning rod” during storms to prevent lightning strikes, particularly in certain high-rise buildings. a ground wire should be used, and if necessary, it should be used in conjunction with a real lightning rod, in order to better avoid lightning disasters.
The simplest ground wire method:
The first method is to make a ground wire on a three-port outlet. The left port is the neutral wire. , and the right port is the neutral wire. The mouth is the live wire and the middle is the ground wire.
The second method is to bury metals with good conductivity underground, such as iron pipes and copper pipes, and then use wires to connect the metal to the distribution box and distribute them at various takes.
The thirdMy method is to connect to the earth wire in the middle of the three-phase socket embedded in the wall of modern houses.
The fourth method usually involves connecting a wire to a small iron box on the outside of a regular building (with a metal ground inside).
The fifth method is to dig a pit underground at home, then place the iron plate at the bottom of the pit and weld a steel bar. If a ground wire is needed, connect the wire directly to the bottom of the pit. steel bar.
How to properly ground the ground wire
1. First, take a copper (aluminum) sheathed wire, connect one end to the ground contact and the other. end to the ground, if the connection wire between the mobile socket and the ground is connected to an iron nail, then use the plug-in. Do not touch the ground wire when the device is energized.
2. Put the threadfrom earth to earth, bury it in the earth with steel pipes, angle irons and other metal objects. Select it according to the earth resistance value, then connect it to the distribution box with wires. , then distribute it to each socket.
3. Take a conductor (such as an iron rod, copper rod, etc.) and push it into the ground to a depth of 1.4 meters. If you want to use it as a neutral line, simply sink it 2.1 meters deep. If you want to use it as a lightning rod, you need to add a copper plate at the bottom of the conductor. The surface area is greater than 40 square centimeters. It is best to add salt around it.
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< p>How to put correctment to ground the ground wire is as follows:
1. When the three-prong plug is connected to the ground wire, it should be zero on the left and hot on the right. For a reliable machine like a washing machine, devices with a metal casing must also be grounded. In addition, when the ground wire is grounded, it should be covered with metal objects such as steel pipes and buried underground, then the wires are connected to the electrical box, and finally each line is connected to each socket.
2. For household earth wires, the independent phase of the 3 phase socket used on the wall is the earth wire, but for some older buildings it has no earth wire, you can disassemble it. and check it out. If there is a wire on a phase, it is the ground wire.
For factories, they are equipped with electrical distribution cabinets, so they all have earth wires. Just do itconnect to the main body. For a bungalow, when grounding the ground wire, you can first dig a pit about 50cm long, then insert the steel channel into it, and then fix it after connecting it.
Methods to distinguish the ground wire:
1 You can use a multimeter to distinguish the connection between the black and red test leads. If there is a reading, it is usually the live wire. If there is no reading or the data is very small, this is the neutral wire. And if there is no numerical value, it is represented by a ground wire.
2. If you want to distinguish the neutral wire and the ground wire, you can distinguish them according to the leakage protector in your house. Since the main function of the leakage protector is leakage protection, when the current on the live wire goes to ground, it will be felt as a leakage.
At this time, the circuit breaker will break. You can connect the other two wires in place and then push the switch. If the protector indicator switch appears, it means the ground wire is connected. If it operates normally and does not trip, it means the neutral line is connected.