On a rainy day, the ground is damp and there is a broken wire, how many meters should you keep with

1. If the low-voltage electric (220V, 380V) wire is broken on the ground, you can rest assured that you can walk through, (you will not have a problem if you step on the breakpoint barefoot) There is no unsafe factor.

Because it doesn't form a step voltage, you, the wires, and the earth are equipotential, and the voltage between your feet is 0, and no current flows through the body. It's just like a normal chassis grounding. If there is leakage at one end of the case, the operator will not be electrocuted.

2. If the high-voltage line above 10kV is broken and falls on the ground, you should keep a safe distance of at least 20 meters from it.

Don't panic once you get within 20 meters, as long as your feet are at the same distance from the landing point of the wire, you can jump off with both feet at the same time, or jump away with one foot.

Sprinkle some dry lime in the corner of the wall and put some coarse salt, the cost is not high. Because these things contain deliquescent characteristic substances, which can absorb water, and can dehydrate and die of cell structures, they can not only solve the problem of dampness, but also kill things that should not survive in the room (of course, people are not in the range of being killed), if conditions permit, increase the temperature in the room on the day of dehumidification, such as burning with an open flame to provide temperature, such as burning a large pot of alcohol (do not play with fire, playing outdoors at night is a bonfire, and changing it to daytime or indoor is arson) so, This will solve the problem of damp or mossy in your room.

Eight meters is safer to stand on one foot.

On rainy days, broken wires may be electrified, and the liquid on the ground also has the possibility of conducting electricity on rainy days, there is no specific way to get away from it, but it is definitely as far away as possible, the ground is damp at least three meters away, and the farther the water flows, the better.

However, it should be noted that if it has been broken for a long time, it may not have electricity, and if it has just been broken, it is likely to be electrified.

On the importance of one-legged kung fu, what is a step voltage electrocution? That is, when a live wire of the overhead line falls on the ground, the potential of the landing point is the same as that of the live wire, and the current will flow from the landing point of the wire to the earth, so the ground is centered on the wire landing point, forming an electric potential distribution area, the farther away from the landing point, the more dispersed the current, and the lower the ground potential. Step voltage electrocution, as the name suggests, is that there is a voltage in one step, and then it is electrocuted.

Once you mistakenly enter the step voltage zone, you should take small steps, do not land with both feet at the same time, it is best to jump away with one foot, walk towards the opposite area of the grounding point, and gradually leave the step voltage zone.

Why is the bird not electrocuted when standing on a power line? Because the bird has the same voltage between its feet and there is no potential difference, it will not be electrocuted. Even if a person has two feet on the same power line, and his body does not touch another wire or conductor, he or she will not be electrocuted.

Because the overhead wire only falls into the ground, so that the earth is electrified, the farther away from the wire, the lower the voltage, at this time, if people accidentally walk into the then there is a potential difference between the two feet, this is the "step voltage", there will be a current flow through the human body and electrocution.

In the case that the voltage of the wire cannot be determined, take the landing point as the center of the circle, and after five meters, put the feet together and jump outward.

The high-voltage wire will not be short-circuited in rainy days, the day between the two wires is wet, and it will not be short-circuited, because the distance between the two wires is relatively large, in a larger distance, even if the air is relatively humid, the resistance is very large, so it will not conduct electricity, on the tower where the high-voltage line is erected, the high-voltage wire is always hung under a long string of well-insulated porcelain bottles, so that the high-voltage line is insulated from the tower. In addition, when installing high-voltage power lines, do not drag them on the ground. Otherwise, due to the friction between the wires and the ground, the otherwise smooth surface is damaged, and many burrs appear, and these burrs will cause tip discharge, which will cause leakage.

There may be electricity, don't touch it, and don't pay attention to it too close!

First of all, it is necessary to keep a certain distance from the wire, and it is best to keep more than five meters if the voltage cannot be determined, and then report to the local power supply bureau.

Due to the dampness of the road surface, the electric current conducts electricity through the water, which is also a conductor. If the fire wire of a single-phase power supply line falls to the ground, it is easy for people to walk by on its side and form a stride electrocution.

The cause of stride electrocution: the current is along the lower body of the person, from the feet through the legs, crotch and to the feet and the earth to form a pathway, when the person is subjected to the action of high voltage and higher stride voltage, the feet will cramp, so that the body falls to the ground. This not only increases the current acting on the body, but also changes the path of the current through the body.

As a result, higher voltages may flow through the body's vital organs, such as from head to hand or toe, when stepping. So, it's safest to keep a distance.

Immediately leave in small steps, you can also jump and walk, to avoid the stride voltage electrocution, to stay away from the floor wire, you can call the ** alarm!

No. The 220V discharge distance is very small, generally in a few millimeters, and it will be fine if you don't contact it directly, but if you hang it on a damp tree on a rainy day, try not to touch the tree, and it will not produce a step voltage.

The wire is composed of one or several soft wires, covered with a light and soft sheath; A cable consists of one or several insulated wires wrapped around a tough outer layer made of metal or rubber.

Cables and wires are generally composed of three components: core, insulating cover and protective sheath. The characteristics of commonly used cables are as follows: CEF - ethylene propylene rubber insulated neoprene sheath, marine flame retardant power cable.

CVV - PVC insulated, PVC sheathed marine flame retardant power cable. Oxygen chamber wires often use BV, BX, RV, RVV series wires.

Among them: BV - copper core PVC insulated wire, long-term allowable temperature 65, minimum temperature -15, working voltage AC 500V, DC 1000V, fixed laying indoor, outdoor, can be applied openly or covertly. BX - copper core rubber insulated wire, the maximum use temperature is 65, applied indoors.

RV - PVC insulated single core flexible wire, the maximum use temperature is 65, the minimum use temperature is -15, the working voltage is AC 250V, DC 500V, which is used as the internal wiring of instruments and equipment.

RVV - copper core PVC insulated and sheathed flexible wire, allowing long-term working temperature 105, working voltage AC 500V, DC 1000V, used in wet, high mechanical protection requirements, often moving and bending occasions.

Actually,"Wires"with"Cables"There are no strict boundaries. Generally, the products with a small number of cores, small product diameter and simple structure are called wires, those without insulation are called bare wires, and the others are called cables; The larger conductor cross-sectional area (more than 6 square millimeters) is called a large wire, the smaller one (less than or equal to 6 square millimeters) is called a small wire, and the insulated wire is also called a cloth wire This is relatively simple and easy to understand.

The power cord is not in contact with the conductor and will not be electrocuted under normal circumstances. The conditions for electric shock are many. Dampness simply increases the likelihood that the wall will conduct electricity.

It doesn't matter if there is water at the end of the thread!! Have you ever heard of thunder on a rainy day and being struck by lightning because rain conducts electricity? The rain is not continuous!

There are two possibilities for you to be electrocuted: 1. Rain or thread contact with the human body. Pathways are formed.

2. High pressure breaks down the air to form charged ions, but the possibility of normal 220 is very rare. But there are safety risks associated with this. It is advisable to deal with it, this one is better to deal with, you can also say that.

Although the voltage of 220V is not enough to form a large stride point voltage range! But it's still dangerous under a rain-soaked tree! It's best not to go into the area under the canopy!

The floor step voltage of 220V voltage is not considered on dry ground! But in a humid environment, it's best to be 1 meter away!

As long as the point that the person touches is more than one meter away from the point where the wire leaks, the electricity will not be available to the person.

Sprinkle some dry lime in the corner of the wall and put some coarse salt, the cost is not high. Because these things contain deliquescent characteristic substances, which can absorb water, and can dehydrate and die of cell structures, they can not only solve the problem of dampness, but also kill things that should not survive in the room (of course, people are not in the range of being killed), if conditions permit, increase the temperature in the room on the day of dehumidification, such as burning with an open flame to provide temperature, such as burning a large pot of alcohol (do not play with fire, playing outdoors at night is a bonfire, and changing it to daytime or indoor is arson) so, This will solve the problem of damp or mossy in your room.

In cases where it is not clear what the voltage of the broken wire is, the distance from the wire is 10 meters, the farther away the better.

How to deal with wire disconnection in a humid environment:

In this case, you must not run away, when the feet are grounded separately, a "stepping voltage" will be formed, and the damage will be greater. When a person perceives a threat from the stride voltage, he or she should quickly put his feet together and immediately jump out of the danger zone with one or both legs.

First aid method for electric shock:

The first thing is to get the electrocuted person out of the power supply quickly, the sooner the better. Because the longer the current acts, the more damage it will take.

To disconnect from the power supply is to disconnect the switch, knife switch or other circuit breaking equipment of the part of the live equipment that the electrocuted person is in contact with; or try to disengage the person from the live equipment. In the absence of power, the ambulance personnel must not only save people, but also pay attention to protecting themselves.

Before the person is electrocuted from the power supply, the ambulance personnel are not allowed to directly touch the injured with their hands, because there is a risk of electric shock.

If the person is in a high place, he or she will fall from a height after disengaging from the power supply, so take precautions.

If the electrocuted person touches the low-voltage live equipment, the rescue personnel should try to quickly cut off the power supply, such as pulling the power supply, switching or knife switch, and pulling out the power plug.

Perform CPR in complete safety and call 120 Ambulance**.