Whether the person has been electrocuted, and what to do if someone is found to have been electrocut

Yes, we all know that electricity is divided into positive and negative poles. When a conductor is connected between the positive and negative poles, an electric current flows through the conductor. Similarly, wires are also divided into positive and negative wires.

The human body is a conductor, the human body is larger, when it touches the wire, the two wires are connected together, forming a short circuit, and there is a large current flowing through the human body, which is the reason for the electrocution. Since the bird is smaller, it only touches one wire, its body and the wire it is standing on are equipotential, and there is no electric current passing through the body, so they will not be electrocuted.

You have to consider what the voltage you are exposed to, as you say "live wire" usually refers to residential electricity, the voltage to the ground is 220V, standing on an insulated bench is enough to isolate you from the ground, although both hands are on the same live wire at the same time, but there is no voltage difference, there will be no current flowing through you, so it will not cause harm. Note that if you are caught on different phases, there will be a voltage difference of 380V between your hands, and there will be an electric current flowing between your hands, which is a very dangerous situation, because the current is flowing through your heart! In the same way, it is the same situation for a bird to stand on a high-voltage line, if there is no voltage difference, there will be no current flowing, and it will not cause harm.

If you are in contact with high voltage, even if there is an insulating stool is very dangerous, each voltage level has a certain safety distance, even if you do not contact with it, as long as it is close to a certain distance range, it will also form a discharge injury, pay attention to keep a distance from the high voltage line is the right way.

No! We can think of the human body as a resistor and wire in parallel, the wire is a short circuit to the human body, so the human body has no current flowing, and the principle of why this sparrow standing on the high-voltage line will not be electrocuted is the same.

Electric shock occurs when there is a voltage between the person's hands that causes the person to be electrocuted.

False, the sparrow stands on the high-voltage line because the sparrow's feet are separated by less and the resistance is smaller, because i=u r, the voltage does not change, the resistance decreases, and the current also decreases.

The bird can withstand such a large current, and there is no harm to the bird.

Don't mislead upstairs, at that time, because, in fact, this has nothing to do with the size of the object, the main reason is that they are all contact live wires, which means that there are only positive electrodes and no negative electrodes in the circuit, and no loops can be formed, so there will be no current.

Yes: No, it won't. Unless this line of fire is high-voltage.

Practice is the only criterion for testing truth.

The following methods are found to have been electrocuted:

1) Turn off the power switch or unplug it immediately.

(2) When the power supply cannot be disconnected, immediately pick up the wires with insulators, such as dry wooden sticks, bamboo poles, etc.

3) Once the electrocuted person is disconnected from the power supply, he must immediately transfer him to a ventilated and dry place to lie on his back, then loosen his shirt and trouser belt, check his breathing, and touch the artery in his neck to see if there is still a pulse.

4) If the breathing and heartbeat of the electrocuted person have stopped, mouth-to-mouth artificial respiration and cardiac compressions should be carried out alternately at the same time, and even if the person is sent to the hospital, the rescue still cannot be stopped.

5) After the electrocuted person is rescued, if there is a burn, the wound must be washed with cold water, then covered with disinfectant dressing, and sent to the doctor for diagnosis and treatment as soon as possible.

(6) In the process of rescuing the electrocuted person, do not use metal objects or wet objects to move the wire, do not use your hands to directly contact it before it is out of the power supply, and try not to move the electrocuted person with wet objects after it is out of the power supply.

Expansion: Everything has two sides, and while electric energy brings convenience to people's lives, it is also a hidden danger in people's daily life. According to statistics, the number of people who die from electric shocks in our country can reach thousands every year.

Therefore, it is imperative to improve the safety awareness of electricity in life. Today, I will take you to what to do if you find an electric shock in your life.

The injuries of electric shock to people are mainly electrical burns and electric injuries. Among them, electrical burns are mainly local thermo-optical effects. Light ones can only be seen with **burns, and heavy ones can hurt muscles and bones. The tissue at the entrance of the current will be carbonized with black.

Electroshock injury refers to a person caused by a strong electric current that comes into direct contact with the human body and obstructs the function of the organ through the body's tissues. Whether it is an electrical burn injury or an electric shock injury, the degree of loss is generally related to the current intensity, voltage, current contact time, the way the current passes through the body, and whether there is insulation jealousy (wearing rubber-soled shoes, standing on a dry board).

After an electric shock injury, mild cases present only with nausea, palpitations, dizziness, and transient loss of consciousness, and recovery usually leaves no sequelae. Severe shock injuries can lead to shock, cardiac arrest, and even death. After electroconvulsive recovery, dizziness, palpitations, tinnitus, dizziness, hearing or vision impairment recover on their own, but it takes a longer time to recover.

In addition, electric shock injuries can also cause damage and rupture of internal organs.

The reason is because of the static electricity that occurs in the human body, and the reason for the electric shock when the hand touches the metal in winter is the result of the external "discharge" of static electricity in the body.

A person's electric shock is caused by an electric current, and the reason why there is an electric current is that the object in contact (such as a wire) discharges electricity to other wires or the earth, so that the current flows through the body, and when it reaches a certain current, it will die.

And the reason why there is a current flowing is because there is a voltage difference between the wire and the ground or another wire, and if there is no voltage difference, there is no voltage, and there must be no current.

Common electric shock accidents are generally caused by the absence of leakage protection measures and man-made paralysis.

There are no leakage protection measures: it means that whether it is a single-phase or three-phase electrical equipment to install a leakage protector, because the leakage protector is sensitive, the power supply is cut off for a short time, so as long as it can be reasonably selected and correctly installed, the use of leakage protector has an obvious effect on personal safety, preventing equipment damage and preventing fire.

Carelessness: More than 85% of a large number of electric shock accidents are caused by wrong operation and illegal operation. The main reason is that the safety education is not enough, the safety system is not strict and the safety measures are not perfect, and the quality of the operators is not high.

Common forms of electric shock are single-wire electric shock and double-wire electric shock. Single-line electric shock is also called single-phase electric shock, such as electric fan leakage accident, etc., at this time, the human body is subjected to a voltage of 220 volts, which is very dangerous. Double-wire electric shock is a two-phase electric shock, if the human body contacts any two phases of the three wires at the same time in the three-phase power supply, it will cause a two-wire electric shock accident, and the voltage added to the human body is 380 volts, which is the most dangerous.

The voltage below 36V is a safe voltage, as long as the current flowing through the human body is not more than 10mA, the person will not be electrocuted.

There are several causes of electric shock; (1) One hand touches the live wire, and the other hand or other part of the body touches the neutral wire, so that the current is generally greater than 10mA. (2) Touch the line of fire with one hand, the ground is damp land, the shoes are wet, and the current passes through the human body, which is also greater than 10mA. will be electrocuted.

Therefore, when working with electricity, it is required to wear insulated boots, and the feet are insulated from the ground, and the second is to pay attention to one-handed work as much as possible to avoid other parts of the body from contacting the ground or the zero line.