How to connect the ground wire of the three pin socket? Three pin socket which is the ground wire

How to wire the three-pin socket.

1. Single-phase three-pin socket wiring.

1) Single-phase three-hole socket wiring, the right jack is connected to the live wire, the left jack is connected to the neutral wire, and the upper aperture is larger than the other two sockets to connect the protection neutral wire.

2) When connecting, the excess insulating skin of the three wires should be removed, the copper wires should be exposed, and the wires should be glued together and put into the corresponding holes; If the thread is too long, it is recommended to cut off a section and connect it according to the corresponding position.

3) Single-phase three-hole socket wiring, but also pay attention to the neutral line is to be connected to the trunk of the neutral wire, not between the trunk of the neutral wire and the ground wire. Otherwise, if the neutral line is disconnected, the voltage will be led to the neutral wire jack through the electrical equipment, and then transmitted to the shell of the electrical appliance by the connecting wire, which will cause people to touch the electrical shell and cause the risk of electric shock.

2. Three-phase three-hole socket wiring.

1) How to wire the three-phase three-hole socket with switch? First of all, use a voltage tester before wiring to test out the neutral line and the live wire; Then use a screwdriver.

will be plugged. The screws are removed.

2) Then connect one end of the neutral wire to the side with the N mark (usually the left side), and connect one end of the live wire to the end with the L mark (usually the right side).

3) Under normal circumstances, the ground wire is used in the wall with a flower wire, or it can not be connected, and the upper cover is screwed after it is connected.

Three-pin socket wiring method.

1. In the power supply system where the neutral point is not grounded, protective grounding must be carried out.

In a neutral grounding system, the equipment housing can be zeroed protection. However, these two protection methods do not allow them to be shared in a low-voltage grid at the same time.

2. Adopt protection to connect to zero.

If the electrical equipment is damaged due to insulation, the short-circuit current generated by "phase" to "zero".

It is much larger than using a protective grounding method, so that the fuse can be driven in a short time.

Or the automatic air switch takes action to quickly cut off the power supply.

3. Since the neutral line and the phase wire are generally laid in parallel, it will be safe and convenient when using the protection to connect to zero.

4. When using a single-phase socket as a protection zero, the right jack of the single-phase three-hole socket is connected to the phase wire, the left jack is connected to the neutral wire, and the upper jack is connected to the protection neutral wire. However, the neutral wire must be connected to the trunk of the neutral wire, not between the left jack terminal and the neutral trunk. Note: Three-pin sockets must be installed in strict accordance with the correct wiring.

Precautions for wiring of three-pin sockets.

1. Pay attention to whether it is electrified.

When wiring, be sure to cut off the circuit live wire to avoid the circuit load.

2. The color of the wire should match.

When connecting the three-prong socket, it is necessary to pay attention to the color of the wire to be uniform, generally the neutral wire will use the cold color wire, and the live wire will use the warm color wire, and the other color is the ground wire.

3. Pay attention to the quality of the wire box.

When connecting the three-hole socket, it is recommended to pay attention to the stability of the wire box, it is recommended to fix it with cement or sand, and if the wire box itself is damaged, it should be replaced in time.

The three-pin socket ground wire is connected to the PE terminal, the live wire is connected to the L terminal, and the neutral wire is connected to the N terminal.

Look at the three-eye socket: the left zero and the right fire ground wire. The power live wire ready to be connected to the three-prong socket is first led to the terminal of the switch, and the other terminal of the switch is connected to the terminal at the bottom right of the three-prong socket; The neutral wire is connected directly to the terminal on the lower left, and the ground wire is connected to the terminal on the upper part.

In this way: the two wires of the live wire and the other terminal of the switch lead to the terminal at the bottom right of the three-eye socket are connected from the switch terminal hole to the three-wire socket.

The two holes below the three-hole socket are used to connect the power cord, the zero wire is usually connected to the left hole, the fire wire refraction and the right hole are connected, which is what we often call the left zero and the right fire, and the large hole shell above is connected to the grounding protection wire, its function is that if the electrical equipment leaks to the metal shell outside, it can use the protective grounding wire to pour the current into the ground to prevent electric shock.

The ground wire is connected to the wire pile, and the grounding wire is generally grounded when wiring

The top one in the middle is the ground wire.

The three-pin socket marked with L is the fire wire, the one marked with N is the zero wire, and the remaining one is the ground wire.

First of all, we face the socket three-prong, the top hole of the socket is generally the grounding wire, the left is the zero wire, and the right is the fire wire, I hope to help you.

Three-prong socket. Of course you can, it's not grounded. But people have left three frames, it is best to connect the ground, because it will be safer to use, especially the electrical appliances with metal parts, when the shell is electrified, the electricity on the metal shell can be transmitted to the ground through the ground wire, so that people are not prone to the risk of electric shock.

If the wire is not grounded, it is fine, but once it is not guaranteed for personal safety.

No grounding wire. Electrical appliances can be used normally, but there are certain safety hazards.

If electrical appliances such as washing machines and refrigerators leak out, the shell will be electrified, and electric shock accidents can easily occur. Some electrical enclosures are made of plastic or other insulating materials, so there is no risk of electric shock. There is a special protection zero connection on the three-prong socket.

Jack, when using zero protection, some people often only connect the terminal head of this hole directly to the neutral wire introduced into the socket only in the bottom of the socket, which is extremely dangerous. Therefore, the dedicated grounding jack should be connected to the dedicated protective ground wire when wiring. Additional Information:

Correct wiring method of three-hole socket: 1. In the power supply system where the neutral point is not grounded, protective grounding must be carried out, and in the system where the neutral point is grounded, the equipment shell can be connected to zero protection. However, these two protection methods are not allowed to be shared in a low-voltage power grid at the same time.

2. The use of protection zero connection has the following characteristics: the use of protection zero connection electrical.

The use of high-power electrical appliances must have reliable grounding, low-power electrical appliances have reliable grounding is the best, no problem is not big, so your three-hole socket depends on what electrical appliances you use, high-power or grounding wire is good, relatively safe, low-power depends on yourself, you want to connect, it doesn't matter much!

According to the requirements of the national electrical technical specifications, the three-pin socket needs to be grounded; However, if there is no grounding wire at home, the three-pin socket will have to be left ungrounded.

Three-pin socket is not grounded wire, our household electricity is basically no ground, as long as a leakage protector is installed, the problem is solved, I hope it can help you.

It can be without a grounding wire, and it can work normally with electrical appliances, strictly speaking, if it is not grounded, if there is no grounding wire, for example, if an electrical appliance has a leakage phenomenon, the shell will be electrocuted if it is directly electrified.

If there is a lack of protection zero wire (ground wire) in the incoming line, it can not be connected, and the ground wire must not be connected privately to prevent accidents. For safety reasons, a leakage protector can be installed.

One of the three-pin sockets is connected to the ground wire, and if the ground wire is not connected, it can still be used, but it will be troublesome if there is leakage.

It doesn't affect the use, but it's very unsafe!

Directly connect the ground wire and fix it on the ground wire identification interface on the socket.

If there is no ground wire, and the water pipe at home is a metal pipe, and the water pipe is connected to the earth, you can also wrap the wire core tightly around the metal water pipe, and the other end is connected to the ground wire interface of the socket, or directly connected and fixed on the metal electrical shell.

Answer: Hello, the general socket grounding wire needs a suitable wire to be combined with the power of a specific electrical appliance, if the use of a large power appliance, but with a small wire to assemble, it will make the wire heat, shorten the service life of the wire, and even cause a fire. Joints should be avoided as much as possible when setting up wires, and if joints are really needed, they should be carried out in the correct way, and the joints should be wrapped tightly with insulating tape. The installation of socket grounding wire in the home room can take two forms, one is the surface installation, the other is the hidden concealment, the concealed installation is laid in the wall, ceiling and other places, must be operated by professionals.

Do not squeeze and overfold the wire when it is surface-mounted, and be sure to fix it firmly.

If the problem is solved, can you give a like, you can chat with me privately.

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Electrical safety is an important common sense in arranging wires in the home, and it is best to hire a professional electrician to install the wires. Should household sockets be grounded? If so, how?

1. How to connect the socket to the grounding wire.

1. First of all, we need to drive an angle iron into a place against the wall, the length of the angle iron can reach meters, and then lead out the ground wire, which can be connected to the electrical appliances used, or directly introduced into the distribution box.

2. When accessing the socket, it is necessary to follow the principle of left-zero-right fire to the ground, draw out the ground wire in the distribution box, peel off the skin of the ground wire, that is, the yellow and green wire, connect it to the wiring post above the socket, wrap it well, and wrap it with insulating tape.

Second, the household socket should not be grounded.

1. When installing the socket, many electricians may only connect the neutral wire and the live wire, but they ignore the ground wire, in fact, there are many household appliances that must be connected to the ground wire. For example, air conditioners and water heaters, these power is relatively large.

2. Some people refute that if leakage protection has been done, there is no need to ground the wire, but in fact, it is the opposite.

3. We need to understand the role of the ground wire, the live wire is electrified, the voltage is 220 volts, the neutral wire is usually uncharged, and the ground wire is a safe return route. If there is a leakage of electricity in the shell of the electrical appliance, the connected wires will be transferred to the ground, and the human body will not be in danger of electric shock even if it comes into contact with the earth, so it is a life guarantee line.

4. Although the leakage protector can play a protective role in critical times, it will not play any protective role in case of failure or tripping problems. Therefore, for family members, there will be certain safety hazards if the ground wire is not grounded.

5. If the ground wire is connected, even if there is a problem with the household appliance and it is electrified, it can be transferred, which can avoid electric shock to the family.

Summary: It can be seen that when arranging wires at home, some electrical appliances must be connected to the ground wire, even if there is a leakage problem, it can also protect the life safety of the family.

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When using a single-phase socket for protection zero, correct wiring is a must. The right hole of the single-phase three-hole socket is connected to the phase wire, which is commonly referred to as the live wire, the left hole is connected to the zero wire, and the upper hole is connected to the protection zero wire, that is, the ground wire.

However, this neutral wire (ground wire) should be connected to the trunk of the neutral wire, not between the left hole terminal and the neutral trunk. If the neutral wire is broken once the neutral wire is broken, the voltage of the phase wire is transmitted to the housing of the equipment through the left jack of the electrical equipment to the working zero line, and then transmitted to the housing of the equipment by the connecting wire, so that the person who touches the housing of the equipment is electrocuted, so it is necessary to install a three-hole socket in strict accordance with the correct wiring method.

First, the neutral point is not grounded in the power supply system, must be grounded for protection; In systems where neutral ground protection is in operation, the equipment shell can be zeroed protection. However, in a low-voltage grid, it is not allowed to have both protections at the same time.

Second, the zero connection protection has the following characteristics:

If the electrical equipment with zero protection is damaged due to insulation, the short-circuit current generated by "phase" to "zero" is much larger than that of the protected grounding method, so it can prompt the fuse or automatic air switch to act in a short period of time and quickly cut off the power supply;

Generally speaking, the neutral line and the phase line exist in parallel, so it is safe and convenient to use the zero connection protection.

1. The three-pin socket has 3 power cables, the red one is the live wire, the green one is the neutral wire, and the black one is the ground wire. The size and diameter specifications of the pins are highly demanding, and the length, as well as the distance between the pins, are all factors to consider.

2. For single-phase electrical equipment, you can use a three-pin plug and a matching three-pin socket. The three-hole socket has a professional ground wire, and when the zero is selected for maintenance, some often only connect the hole terminal pile head directly with the zero wire introduced into the socket at the bottom of the socket, which is very dangerous.

Precautions for the purchase of three-pin sockets.

1. Choose a path.

It is necessary to buy three-pin sockets in regular large supermarkets, hypermarkets and other shopping malls, so that the quality is more guaranteed.

2. Recognize the brand.

Look for the brand, don't choose the brand socket that has been ** or has been punished.

3. Look at the appearance.

You can look at the appearance, a good three-hole socket shell is finely made, there are no burrs on the edge of the shell and jack, and the jack scale is symmetrical; And the poor quality socket, the shell workmanship is rougher.

4. Hole type.

For the hole type of the three-pin socket, it must be the new national standard socket with five holes, and do not buy a three-pole jack on the plug-in board.

The standard grounding is with a meter long 5 * 5 angle iron, vertically smashed into the land with round steel or wires into the distribution box, there is no condition to do grounding to tie the grounding wire to the water pipe or cast iron sewer line, the ground wire on the socket is marked as E, the standard grounding wire is connected with yellow and green two-color wire, there are more electrical leakage accidents, it is recommended that you do a good job of grounding, and then install an air switch with leakage protection to improve the safety factor.

The top hole of the three-pin socket is grounded. Looking at the plug, you can also see that the foot of the ground wire on the plug should be a little longer than the other two pins. The ground wire on the socket is marked as E, which is generally distinguished by a yellow and green two-color wire connection.