Is the ground wire in the three prong socket really connected to the ground?

Under normal circumstances, the ground wire in the three-hole socket is connected to the earth, if it is not connected, it can only be said that the total ground wire of your home is not connected to the earth.

A ground wire is a wire in an electrical system or electronic device that is connected to the ground, to the enclosure, or to a wire with a reference potential of zero. On general electrical appliances, the ground wire is connected to the shell to prevent electric shock accidents caused by the internal insulation damage to the shell.

This depends on whether your home's power supply has a grounding wire and is good.

For example, if there is a grounding wire in the socket on your socket, then the socket strip can be connected to the socket strip through the middle tab because it is three blades.

If it is connected, it is really connected to the ground, there are standard regulations, to be precise, it is connected to a steel bar, and the steel bar is buried deep underground, and the standard resistance can not exceed how much.

Many rural areas are not connected, but they can also be used, and there is no grounding inside.

The ground wire is connected to the earth, and the general function is to channel the leakage current into the earth to protect people from being injured by electric shock. Now the electric air is open with leakage protection, and with the grounding wire, it is better to quickly protect and trip in the event of leakage.

The ground wire in the three-hole should be actually connected to the ground, and it must be connected to the ground electrode of the same system as the neutral wire.

It is to be grounded, but it is usually not directly connected to the earth, but to the ground wire of the power cord.

The embodiment in the three-prong socket is indeed simply inside. Because it is connected to the earth through the grounding device of the wire, it does not feel like it is on the ground, but it is actually connected to the ground.

The ground wire of the three-pin socket is really connected with the earth, unless the ground wire of the three-prong socket is not connected or the circuit does not have a ground wire, the ground wire is not only connected with the earth, but also communicates with the zero wire, but the zero wire and the ground wire at the user end can not be connected together.

Right! Grounding is to use steel to drive into the soil at least half a meter deep underground! In the event of a leakage, the current is channelled directly into the underground through the underground connected by electrical appliances! And not through the human body into the ground! Because of the grounding wire.

And the resistance of the steel is smaller than that of the human body! Electricity will pass first!

All three-prong sockets must be connected to a ground wire.

The grounding wire is a grounding method for us to use electricity, which is commonly used protective grounding.

To protect personal safety, when there is a leakage, the electricity will go directly to the ground, not to the person. If the electrical equipment is not protected to ground, when the insulation of a certain part of it is damaged, the shell will be electrified, and at the same time, due to the capacitance between the line and the earth, the human body will suffer from the danger of electric shock if it touches the shell of the electrical equipment with damaged insulation.

After the protective grounding of the electrical equipment is implemented, the grounding short-circuit current will pass along the two paths of the grounding body and the human body at the same time. Ground resistance.

Generally below 4 ohms, and the body resistance.

It is about 1000 ohms, so the current flowing through the human body is almost equal to zero through the shunt action of the grounding body, so that the danger of electric shock in the human body under the short-circuit fault current is avoided.

Protective grounding can do the following:

1) Provides low impedance between the device and nearby metal objects.

connection to reduce the risk of electric shock;

2) Provide a low-impedance path to the ground fault current to return the power supply to make the fuse.

or the circuit breaker can be actuated;

3) Induce current to lightning.

Provides a low-impedance discharge path to the ground;

4) Provide a discharge path to the ground for the electrostatic charge to prevent electric sparks or arcs.

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 three-pin plug wire is not connected to the ground wire, why is the ground wire electrified?

Hello dear, happy to solve the problem for you, <>

The three-pin plug wire is not connected to the ground wire, why is the ground wire electrified? A: 1

It is because the ground wire is not wired, so after plugging in the electrical appliance with a three-wire plug, the leakage of the electrical appliance is sent to the ground wire to make it live. 2.If it is an empty socket, it means that the socket may be used for a long time, and there is already leakage due to dirt or carbonization between the poles, and it needs to be cleaned or replaced with a new socket, otherwise the increasingly serious leakage will lead to heat generation, and there will be fire hazards if the temperature rise is too high.

The three-pin plug wire is not connected to the ground wire, why is the ground wire electrified?

Hello dear, the three-wire socket does not have a grounding wire, and there is electricity when the electric pen touches the ground wire hole, so there must be a problem with that socket. The three wires of the socket are independent, and the socket is made of insulating materials, plus the three wires are only live wires, neutral wires, and ground wire sockets, and there is no possibility of induction electricity. The biggest suspect is that the socket material contains conductive impurities.

It's better to replace it with one.