If I don t have a ground wire at home, can I connect the ground wire myself? What are the dangers of

The metal shell of the electrical appliance may be directly or indirectly connected with the live wire, if there is no ground wire, people come into contact with the shell, the current will flow through the human body to the earth, and in serious cases, it will cause electric shock accidents. If there is a good grounding wire.

The current will then flow to the ground through the ground wire and will not endanger personal safety. If there is no ground wire in our new house, then it must not meet the requirements, and we can report it to the relevant department. So is it necessary to have a ground wire?

For example, a friend now asks such a question: Is it okay for a circuit in the home to be ungrounded? How does it work?

<> have qualified grounding wire, grounding resistance.

4 ohms, leakage will trip as soon as possible. Leakage protection malfunction air switch.

Also trips. Leakage protection, air switch are broken, and the wire will be hotly damaged. Even in the most extreme cases, even if the electrical appliance is electrified, there will be no current in the human body, because the electricity will leak from the ground wire.

Our rural self-built houses generally ignore this line, and how to deal with it when there is no grounding point for the grounding wire in the home? with galvanized pipes.

Or one end of the galvanized angle iron is driven into the ground to a depth of more than 2 meters, and the other end is used as a connection point to effectively connect to the user's distribution box with copper wire.

to the ground.

And check the leakage protector regularly.

to ensure proper functioning. There is a detection button on the leakage protector, press it at least once a month to see if it can be tripped. If it can be tripped normally, you can press the reset button to close and use.

Yes, there are two main wires in the home circuit, the live wire and the neutral wire, and the ground wire is also required for electrical appliances with metal shells to ensure the safety of use.

The leakage protector can be installed on the entrance line, and the room is not obviously damp, and there is no problem with keeping the home environment dry! If you find that your home has serious water leakage, humid air, mopping the floor every day, and mopping the door and window tightly, it is easy for the line to be damp and cause a leakage accident. Then the risk of electric shock increases and endangers the safety of our lives.

Therefore, whether it is a residential or commercial place, there must be a grounding wire.

Yes, but you should follow the correct method of safe electricity use. If the household appliance has leakage and there is no grounding wire, there is a risk of electric shock If the ground in the home is relatively humid and there is no ground wire, there is a leakage situation, and it is also easy to be electrocuted.

It's really not possible to do a protection zero.

Connect a leakage switch.

It is not allowed to use the neutral wire as the ground wire.

Installation of ground wire: For general customers, as long as the angle steel of 40 40 4 2500 mm is used, and the ground meter is vertically driven into the ground by mechanical penetration, the resistance value requirements of the grounding resistance can be met. Then weld with a round steel with a diameter of 8 and lead out of the ground meter, and then connect to the grounding pile of the electric water heater with a wire of the same material and model as the introduced power phase wire.

There's no way, it's better not to use:

In the case of no ground wire, it is best to connect a leakage protector on the entrance bus. In this way, when leakage occurs in indoor circuits or electrical appliances, it can play a role in power-off protection and prevent electric shock accidents. However, the protection function of the leakage protector should be checked frequently, and there is a test button on the leakage protector.

In addition, when buying a leakage protector, you should consider the size of the electrical load at home to choose, generally 10 20a, you can ask an experienced electrician to help purchase and install, so as to avoid accidents.

You can use an angle iron of more than meters to drive into the ground at the foot of the wall, and then lead out of the ground wire.

All electrical appliances that use three-pin power plugs, the ground wire must be properly grounded, and in the current newer housing, the power cord is single-phase three-wire, and the ground wire has been connected. Old-fashioned houses are generally only single-phase two-wire system, there is no ground wire introduction room, with the increase of household appliances, should be connected to a ground wire into the room.

Answer: If there is no ground wire, it is okay not to connect, according to the standard ground wire, you need to take a metal rod and insert it into the ground. And the depth is also required. But if you want to pursue a less standard, you can wrap the line around the faucet or the anti-theft window, which is better than nothing.

Question: Is it okay to have a 220v car charger at home without a grounding wire?

If it is closer to the outside, you can buy a grounding rod and use a hammer to smash it into the ground. The charging pile has a large current, if there is no special difficulty, it is better to ground, for the sake of your own safety.

The question is that there is no grounding wire at home in the countryside, all cement floors cannot be grounded, whether the charging village can be used if it is not grounded, and whether it will burn and damage the charging village.

There is a requirement that the grounding must be less than 4 ohms.

Answer: Generally, the charging pile will be equipped with a protective device, and it is not allowed to be used if it is not grounded. But there are also vendors who secretly block it. It stands to reason that the cement floor in the countryside will not be very thick, and the grounding rod should be able to be smashed into it.

If there is no ground wire inside the house, you can use a galvanized steel pipe to connect a ground wire about 5 meters around the perimeter of the house. First, a hole with a depth of one meter is dug in the ground, and then copper rods or galvanized steel pipes are buried in the hole, and the depth of burial into the ground needs to exceed one meter. After the grounding is completed, the grounding resistance value should be measured, if it does not exceed 40 ohms, it means that the grounding is qualified, if it exceeds 40 ohms, it means that the grounding is unqualified, and the grounding needs to be increased again.

Then you need to wiring and route a wire to where you need to wire it to make the connection. It's more troublesome.

Methods for your reference.

The first case: it is found that there are no ground wires in the whole house. In general, it is necessary to rework it all. Families cannot use the zero-connection protection method;

The second case: it is found that none of the residential units have introduced ground wires from the outside. It is necessary to make a new pole in order to introduce the ground wire, and there are several ways.

Column reinforcement lead method: open the steel bar of the column, measure its grounding resistance, if it can reach about 4 ohms, weld the grounding terminal on the steel bar, and draw the ground wire from the grounding terminal;

Indoor and outdoor planting methods: plant an inch of hot-dip galvanized water pipe in a convenient and humid place close to the distribution box, and also lead out the ground wire to the distribution box;

Gas pipes, fire pipes, water pipes, heating pipes: Introducing ground wires from the above buried metal pipes is actually a simple but not very reliable method, but it can be done.

The grounding resistance of the connected pipeline must meet the basic requirements of 4 ohms, or the ground resistance of all metal pipes must meet the standard;

The equipotential ground wire of the bathroom is connected to the newly made ground wire;

All metal pipes into the house must be connected, and it is best to connect them with the equipotential endpoints of the bathroom to achieve whole-house and local equipotential;

Ground failure alarm installation.

1. If there is no grounding body, install the ground wire, use galvanized steel pipe or galvanized angle iron, and drive it into the ground at least 2 meters below. Galvanized ones will not rust.

2. If you use welding, the joint needs to be treated with anti-corrosion, 3. If you hit a point less, you can play a few more, which can reduce the grounding resistance.

3. Connect with galvanized flat iron.

4. The grounding wire is introduced to the grounding terminal of the user's distribution box.

5. The grounding wire of the household appliance shell is connected to the grounding terminal of the distribution box. The joint connection should be firm and reliable.

When many people decorate at home, they will consider a problem, whether the electrical sockets and electrical connections at home need to be equipped with ground wires? In fact, in the previous old-fashioned decoration, there was no such thing as installing a ground wire. Because there was no electricity in the previous house, the wires were all connected back, and naturally there was no way to install ground wires.

However, the current commercial housing or self-built houses will take into account the grounding wire.

According to the regulations of the state, it is necessary to ground the wire. First of all, the incoming line in our home needs to be equipped with a leakage circuit breaker.

In order to prevent the leakage of electrical appliances in the home, it will cause harm to the human body and electrical appliances, and even cause fires. Secondly, our electrical appliances all need to be protected by grounding.

Measure. That is, when connecting wires, one is the live wire, one is the neutral wire, and the other is the ground wire. In order to be when the electrical appliances in the home leakage, high voltage.

It will be removed from the wire without causing an electric shock hazard to the human body.

One might wonder if it would make a difference if there was no grounding wire. What is a ground wire, that is, a lightning cable, is usually a wire that introduces electricity to the earth. The biggest function of the grounding wire is to avoid direct damage to people when leakage occurs in the household, and to lead the electricity of the charged metal to the earth.

There is also a kind of lightning protection grounding.

It can protect power electronics from lightning strikes and play a protective role. Both safety grounding and lightning protection grounding are used to provide a safe protective measure for electronic power equipment or personnel, and to protect the safety of these equipment and personnel.

Generally, the ground wire is selected in a humid place, and the galvanized angle iron of about 1m5 is driven into the ground, and then the wire is led out of the room. Of course, there are also ground wires that are connected directly to metal conduits that may meet the earth, such as our water pipes. Here is a warm reminder, if you directly punch a nail wiring on the wall, then the effect is not as good as the one that directly drives the galvanized angle iron into the ground.

This is because practices like this only release static build-up on the device, not protection.

Sockets without grounding wires do not affect the use of appliances with triangular plugs, nor do they affect the lifespan. It's just that if there is a leakage that will hurt people, maybe you won't leak electricity once in ten years, and if you leak once, it can be fatal.

Be sure to ground the wire. The ground wire can protect our safety, if the ground wire is not connected, the home with high-power electrical appliances is easy to be electrocuted, and the ground wire can transmit part of the electricity to the ground.

Because a leakage protector is installed, there is no need for a grounding wire.

Some rural households use electricity, there is no grounding wire, as long as the leakage protector is installed, it also plays a role in preventing electric shock, and there is grounding protection in the electrical circuit.

If there is no grounding wire, if a person touches an electrical appliance, the current will flow into the earth through the human body, and the leakage will also trip in an instant, so as to ensure personal safety. To put it in layman's terms, installing a leakage protector in a circuit with a grounding wire is to ensure that the electrical leakage is not charged and that people are okay when they encounter it. In the circuit without grounding wire, it is necessary to install a leakage protector to ensure that people do not harm when they encounter leakage electrical appliances, which used to be called electric shock protectors.

What should be paid attention to with the grounding wire

1. First of all, the staff of the sail ground line must go through professional training, and only the stool bureau can operate with relevant operation certificates. Moreover, before the grounding wire, it is necessary to check the electricity first, and look at the site and the existing power**, so as to avoid the wrong power outage and cause the charge to hang the grounding wire.

2. Secondly, when the grounding wire is grounded, it is necessary to check whether the copper wire of the ground wire is broken, whether the screws are loose, etc., and replace and repair it in time if it does not meet the requirements. Moreover, when driving the grounding pile, try to operate on a viscous surface, otherwise if the surface layer is soft, it may cause looseness or weathering.

3. Then the grounding wire can not be connected with the branch wires such as pull wires, metal pipes or ** wires, because these branch wires are not only too large and unstable, but also lead to induction electricity once the charge is too large, which will cause harm to the human body, and in serious cases, it will cause more damage.

What should be paid attention to with the grounding wire

1. First of all, the grounding wire staff must undergo professional training and have relevant operation certificates before they can operate. Moreover, before the grounding wire, it is necessary to check the electricity first, and look at the site and the existing power**, so as to avoid the wrong power outage and cause the charge to hang the grounding wire.

2. Secondly, when the grounding wire is grounded, it is necessary to check whether the copper wire of the ground wire is broken, whether the screws are loose, etc., and replace and repair it in time if it does not meet the requirements. Moreover, when driving the grounding pile, try to operate on a viscous surface, otherwise if the surface layer is soft, it may cause looseness or weathering.

3. Then the grounding wire can not be connected with the branch wires such as pull wires, metal pipes or ** wires, because these branch wires are not only too large and unstable, but also lead to induction electricity once the charge is too large, which will cause harm to the human body, and in serious cases, it will cause more damage.

There is no ground wire at home, and the grounding wire method is as follows:

1. I found that there was no ground wire line in the whole house. In general, it is necessary to rework it all. Families cannot be scattered by the method of zero protection. Fast Rent.

2. It was found that none of the residential units introduced ground wires from the outside. It is necessary to make a new ground pole in order to introduce the ground wire, the column reinforcement lead method, open the steel bar of the column, measure its grounding resistance, if it can reach about 4 ohms, weld the grounding terminal on the steel bar, and lead the ground wire from the grounding terminal.

3. Indoor and outdoor planting methods, plant an inch of hot-dip galvanized water pipe in a convenient and humid place close to the distribution box, and also lead out the ground wire to the distribution box. Gas pipes, fire pipes, water pipes.

4. Heating pipe ground wire method: The introduction of ground wire from the above buried metal pipe is actually a simple but not very reliable method, but it can be done.

Basic information of the grounding wire:

The grounding wire is a wire that directly connects to the earth, which can also be called a safety route, and when it is dangerous, it directly transfers the high voltage to the earth, which is a lifeline. Due to the poor insulation performance of household appliances or the humid use environment, the shell of the household appliances will have a certain amount of static electricity, and in serious cases, electric shock accidents will occur.

In order to avoid accidents, a wire can be connected to the metal shell of the electrical appliance, and the other end of the wire is connected to the ground, and the grounding wire will bring static electricity into the ground and release it once the electrical leakage occurs. In addition, it is more important for electrical maintenance personnel to use the soldering iron to solder the circuit, sometimes because the electric soldering iron is charged and the integrated circuit in the electrical appliance is damaged.

Friends who use computers sometimes ignore the grounding of the pure mainframe, in fact, the grounding wire of the computer's mainframe can prevent the occurrence of crashes to a certain extent. Grounding wires in the power system is an important tool to ensure that workers are guaranteed in the event of an unexpected voltage on equipment and lines that have been cut off. According to the ministry, the grounding wire must be made of bare copper flexible wire of more than 25mm2.