Why does my mother always turn off the electrical appliances at home when it thunders?

Because of the fear of fire, it is easy to cause electric shock when thunder, causing fire, and electrical appliances are also easy to be damaged.

Lightning has a high degree of uncertainty and high risk, in case lightning hits a certain part of the power grid at a certain moment, it is likely to lead to the failure of electrical appliances, plus lightning can burst out of energy in an instant is very amazing, the possibility of breaking down the insulator is not impossible

Because a short circuit occurs during thunder, it is necessary to turn off the electrical appliances at home.

Why do they say that when it rains and thunders, the power should be turned off! Does there any truth make sense in this?

I still remember that when I was a child, I still remember that in our childhood, we could often hear very loud thunder, lightning and thunder in the summer, and many people would be very scared. At this time, our parents usually tell us to quickly turn off the electricity on the TV in the house. Otherwise, the TV will burn out.

The previous high-tech is not as developed as everyone is now, although there is a TV when I was young, but it is different from everyone today, it is very likely that many post-90s have not seen the previous TV, the TV set that my parents watched is all that kind of desktop all-in-one machine, there are two antennas on it, and the antenna is used to receive data signals, only with data signals can you **TV programs. But now the technology is more developed, and all the TVs you watch can be received immediately by wireless network, which is very convenient, so it's okay to watch TV dramas and thunder now.

When the working voltage changes in summer and the daily thunder and lightning strikes, the direct impact on the computer is very large. Because at this time, there is a possibility of instantaneous surge protection and peak working voltage anytime and anywhere will immediately make a clear change in your switching power supply and server, if your switching power supply has a maintenance role, the damage is a little smaller, otherwise, you will wait for boredom.

Destruction of televisions. When I was young, when I heard thunder, everyone would hurry to turn off the electricity of the TV and all kinds of household appliances, just like the TV, there is an antenna on it, and the antenna is not wood, it is a metal product, and the metal material can be conductive, we all know. If the antenna is still receiving data signals in the case of thunder, it is very easy to cause a short circuit fault of the TV, or damage the TV, which is very scary.

There is also the possibility of electricity coming to people. In the case of thunder, everyone will continue to hear that you can't stand under the uncle, the key is also because the thunder and lightning must be very easy to touch very high objects, and the trees are relatively tall, so it is very easy to be struck by lightning, and people in the shade of large trees can undoubtedly avoid it. Nowadays, with the improvement of our daily life standards, lightning protection has long been effective, so it is very rare to be struck by lightning.

During thunderstorms, high voltages are generated between the clouds, and large currents can be released through the outdoor sky or AC power. If the TV antenna plug or power plug in the user's home is not unplugged, lightning may damage the appliance and cause lightning to strike the machine.

Because thunder will be the wire in a short period of time to generate a high voltage, so that the TV will happen, killing the people around, will have a great impact on our lives and property.

Because this prevents the wires from generating high voltage and burning the TV, the TV must be turned off when there is a thunderstorm.

Because this may prevent the wires from creating a low-voltage environment and thus burning the TV, it is necessary to turn off the TV during thunderstorming.

In times of thunderstorms, high voltages are generated between clouds, and large currents can be released by outdoor ground-level or interchangeable power sources. If the TV antenna plug or power plug in the user's home is not unplugged, lightning can or may shatter the appliance and cause lightning to strike the machine.

The high voltage generated by the strong movement of the atmosphere can be instantaneously discharged through the power line or antenna (mainly long wire) of electrical equipment, resulting in internal breakdown (high-voltage damage) or melting (power damage) of electronic components in electrical equipment, and finally causing permanent damage to electrical equipment

And the strong magnetic field caused by this high voltage and strong discharge sometimes produces high voltage in the transformer of some electrical appliances, burning electronic components Good electrical appliance manufacturers will do the corresponding lightning protection measures when designing circuits and designing printed circuit boards, high-rise buildings must be equipped with lightning rods, and do not use electrical appliances when thundering

TV: When watching TV during thunder, the image is very unstable, the interference is large, and the mood is always a little scared, worried about the plane crashing and dying, is this possible?

In fact, as long as the outdoor antenna is not connected, the TV is used indoors, and there is generally no need to be frightened, because although the thunder and lightning are powerful, before entering the room, the thunderstorm clouds have already discharged with the earth. In the short discharge process, most of its huge energy is converted into heat, light and other energy, so it will not cause harm.

Usually when lightning strikes, when watching TV during the event, most of the interference on the screen and in the accompanying sound is the radiant energy of lightning, not the energy of induction or discharge. This kind of radiant energy generally does not damage the TV.

However, it must be emphasized that it is dangerous to use an outdoor antenna or to watch television outdoors during a thunderstorm, and lightning protection measures must be taken if it is monitored.

Electric light: When thunder, the voltage becomes very large instantly, which will cause the electric light to ignite and cause a disaster. But there is usually no need to turn off the lights, because the voltage increases, and the work of the substation is suspended at the same time, that is, the power is out, so the lights at home will automatically turn off the power even if they are not turned off, which is safe.

Computer: The voltage of the powerful lightning will cause the semiconductor integrated circuit to be instantly broken down and lose its original polarity, so the integrated circuit will be damaged, the computer is composed of a large number of integrated circuits, and the integrated circuit will be broken, and the computer will be broken.

In addition, the voltage of thunder is very high, and the instantaneous high-voltage discharge will cause the nitrogen in the air to be broken down and burned, which is to release a lot of heat, and it will also burn the computer.

Furthermore, the type of lightning belongs to static electricity, and those who know the circuit know that static electricity is the first killer of integrated circuits.

Thunder has the opportunity to cause the wire to produce instantaneous high voltage At this time, the high voltage may break through the electrical components, and the serious one may cause **, and the slight one will also burn the fuse tube So if it is an area with more serious thunder, sometimes even the electric lights must be turned off, because it may suddenly burst on, hurting people nearby Of course, if the clouds are very high, it will have no effect Generally, those thunders that sound more scary, the clouds are low, and they must be turned off at this time!

We need to find out if the building where the home is located has lightning protection. Many new residential areas and high-rise buildings will generally be installed with lightning rods, and some communities will be equipped with SPD lightning protection devices, and it is relatively safe to use household appliances in buildings equipped with these lightning protection devices. As for some bungalows and rural houses, they are generally shorter, and generally speaking, it does not matter if there is thunder, because there are relatively high objects to draw the lightning away.

However, for external TV antennas and satellite receivers (commonly known as 'pots'), be sure to unplug the power supply when thundering, because such objects are more susceptible to lightning strikes. Although it is possible to use household appliances in buildings with lightning protection devices during lightning strikes, there are two things to be aware of: one is that it is best not to use mobile phones during thunder, and the other is not to use solar water heaters.

Because the installation position of solar water heaters is generally higher than the lightning rod on the roof of the building, it is easy to become the target of lightning strikes. When preventing lightning strikes indoors, the outdoor antenna of the TV should be separated from the TV during thunderstorms, and connected with the grounding wire, and the doors and windows should be closed to prevent spherical lightning from entering the room and causing harm. During thunderstorms, it is best for the human body to leave the lines and equipment that may be invaded by lightning waves, that is, try not to use electrical appliances for the time being, it is best to unplug the power plug, do not hit, and do not get close to indoor metal equipment, such as radiators, water pipes, and sewer pipes; It is necessary to leave the power line, the first line, and the broadcast line as much as possible to prevent the secondary discharge of these lines and equipment to the human body.

Also, don't wear damp clothes and don't go near damp walls.

Thank you for the trouble to adopt!

Before discussing this issue, it is important to understand that lightning damages household appliances.

mechanism. The instantaneous high current generated by lightning is the culprit of damage to household appliances, which will lead to the burning or breakdown of electrical components, and the probability of lightning directly hitting household appliances or household appliances connecting wires is very small, most of them are caused by the surge caused by lightning induced current to damage household appliances.

In fact, you don't have to worry too much about using electrical appliances in thunderstorms, now there are lightning protection facilities in the house, which can effectively reduce the threat of lightning to household appliances, but for safety, it is best to turn off the appliances during a thunderstorm and unplug all external cables (such as power cords, TV antennas and ** cables, etc.).

Peace be upon you.

Because there are generally two situations for lightning to enter the room: from the power line and from the signal line.

Power intrusion. On modern buildings, we can see lightning protection devices, when the building is directly struck by lightning, a strong current is directed into the ground along the grounding lead, preventing lightning damage to the building. We also need to take some necessary lightning protection measures indoors. Technically:

We need to install power lightning protection devices on computers, household appliances, communication equipment, etc. But in fact, because high-rise buildings have relatively complete lightning protection measures, users in the building generally do not need to consider lightning protection from the perspective of power supply.

Signal line intrusion.

The invasion here is mainly caused by the lightning surge caused by induced lightning. Induced lightning generally comes from lightning strikes and inter-cloud discharges, among which the induced surge voltage generated by lightning strikes is larger, and electronic information equipment within a range of 500 meters may be damaged by it. According to the theory of lightning electromagnetic pulse and practical experience, it has been proved that

The main cause of damage to electronic computers and other information equipment is caused by lightning-induced surge voltage, which can introduce induced surge voltage waves into the equipment through various signal leads, destroying its chips and interfaces. Therefore, signal lightning protection devices should be installed between the signal lines.

Specifically, we can take the following measures on the personal computer networked system:

1 In the modem, including cable

modem and xdsl

modem) and the home signal line (such as ** line), a signal lightning protection device is installed.

If you have a good grasp of electronic and electrical technology, you can purchase your own TVS tube to make a simple lightning protector, which is the most economical.

2 If you use UPS as a microcomputer uninterruptible power supply, it is recommended that you install a power surge arrester to protect UPS before UPS.

3 Purchase a modem with lightning protection. This modem** may be a little more expensive, so look at its features when you buy it.

Thunder is generally accompanied by lightning, a violent electrical discharge. In times of lightning, induced electricity is generated in the power grid, which is superimposed on the original voltage to form a surge shock. Generally, such a voltage is higher than the rated voltage of the electrical appliance, so it will burn out the electrical appliance.

If you have an antenna at home and place it outside the house to receive the signal, if you use it when lightning strikes, you are more likely to be struck directly by lightning, and the consequences are unimaginable.

Because it's thunder and lightning.

Arcs can be generated.

The arc [that is, the surge, the instantaneous current can penetrate the electrical shell] will follow the wire.

and so on into the family.

to the original appliances of the appliance.

Cause damage thanks.

Thunder is a sound that is formed due to lightning, so the root is still in the lightning. Lightning is a strong discharge phenomenon in nature, and one of the characteristics of electricity is to take "shortcuts". That is to say, lightning will choose the direction of the least resistance of the object that first touches it, (the principle of lightning rod is to take advantage of this characteristic) and the power supply tower and the wires connected to it meet this condition, so the possibility of wires guiding lightning into household appliances is greatly improved, and the possibility of household appliances being struck by lightning is also increased simultaneously.

Because lightning will cause a short circuit in the wires, generating a higher than normal voltage of electricity, such a high-voltage electricity will impact the electrical appliances, and the electrical appliances will burn out.

Now is the typhoon season, so there will be rain and thunder from time to time, for lightning is generally avoided, can not be prevented, for electrical protection, in the case of not using such as ants can be pulled out of the power supply, and other things should also be pulled, one can avoid lightning damage, and secondly, it can save electricity, for refrigerators, because the restart of refrigeration consumes more electricity, so you can add a power regulator, one can protect electrical appliances, two can reduce losses. Don't watch the TV when it thunders, and pull out the power cord and TV cable, and the TV cable will sometimes burn the TV when it is plugged into the rubber shirt.

Electrical appliances are often damaged by lightning and are also related to lightning protection, and if the lightning protection at home is not good, it will also cause an impact.

This is caused by a variety of factors, 1. It is because your lightning protection facilities are not good. 2. It is because your family often does not pull out the electrical plug.