Common sense of students' electricity consumption ppt 1. Elementary school students' common sense of safe use of electricity.

1. Don't touch the power switch and electrical appliances with wet hands to avoid ().

2. Don't connect too many plugs in the same socket, because when the load of the wire socket is too large, it is easy to cause wires ().

3. Don't touch the electrical switch when taking a bath, because water is easy to conduct electricity, so in case of leakage, it is easy to cause ().

4. When you want to check or repair electrical appliances, please turn on the power supply first ().

5. Don't insert metal objects into the socket at will, because metal objects are easy to conduct electricity, and the current will be conducted to you along the metal, causing the danger of ().

6. If there are children at home, please don't let the children use the socket as a toy, and don't insert your fingers into the socket, so as not to cause ().

7. Household appliances and wires should be avoided in damp places, and don't stand in the place () when starting the appliance.

8. Before use, the plug must be completely inserted into the socket, because if the contact is poor, it will cause the situation of ().

9. When the electric heater and iron are not in use, unplug them and cut off the power supply, so as not to cause a fire.

10. When purchasing electrical appliances, choose energy-saving and up-to-standard electrical appliances; Before using new electrical appliances, be sure to read this book carefully to understand the correct use. The voltage and current of new electrical appliances should be consistent with the power supply.

2. True or False (3* 10=30 points)

1, touch the power supply with a certain part of the human body. - ( )

2. Plug in the power plug with wet hands.

3, all kinds of electrical appliances, plugs and sockets, wires, lamps are damaged, aging phenomenon, can also be used. - ( )

Pupils can play with electricity in private. - ( )

5. Metal products can directly contact the power supply. - ( )

6. The wires on the roadside are all dropped, so you don't have to avoid them when you see them. - ( )

7. Don't bake clothes on electric heating equipment. - ( )

8. Take care of power facilities and don't fly kites near overhead wires and distribution transformers.

- ( )

9. Don't hang the clothesline on the wire. - ( )

10. It is strictly forbidden to set up power grids without permission, and to guard against theft, hunt, catch rats and fish with electricity. - ( )

Three. Short answer questions (10*4=40 points)

1. Why can't wet hands touch the live switch?

2 What should I do if there is an electrical fire?

2. Primary school students' knowledge of electricity prevention and safety

How to use electrical appliances safely? Nowadays, TV sets, refrigerators, washing machines, electric irons, hair dryers, electric fans and other household appliances are increasingly entering the family.

When using household appliances, besides using electricity safely, we should also pay attention to the following points: 1. Various household appliances have different uses and methods of use, and some of them are more complicated. General household appliances should be studied and used under the guidance of parents, and dangerous appliances should not be used alone.

2. If there is smoke, sparks, burning smell, etc. , should immediately turn off the electrical appliances and stop using them. 3. Electric appliances such as hair dryers, rice cookers, electric irons and electric heaters will emit high heat when in use. Pay attention to stay away from flammable items such as paper and cotton cloth to prevent fire; At the same time, pay attention to avoid burns when using.

4. Avoid using electrical appliances in humid environment (such as toilet), and don't let electrical appliances get wet, which will not only damage electrical appliances, but also cause electric shock. 5. Fan blades of electric fans, dehydration cylinders of washing machines, etc. Rotate at high speed when working, and do not touch with hands or other objects to avoid injury.

6. In case of thunderstorm, please stop using the TV and unplug the outdoor antenna to prevent lightning strike. 7. Electrical appliances are easy to be damaged by moisture corrosion after being put on hold for a long time, so they need to be carefully checked before being reused.

8. When purchasing household appliances, you should choose qualified products with reliable quality.

3. What is the knowledge about campus electricity safety?

1. Avoid overloading the household power cord and replace the worn-out power cord to avoid accidents.

2. The total risk and home risk of household power supply should be reasonably configured to protect household appliances.

Every family must have some necessary electrical appliances, such as test pens, screwdrivers, rubber pliers, etc.

4. In any case, it is forbidden to replace the fuse with copper or iron wire, and the size of the fuse must match the capacitor.

5. The power plug and socket should be safe and reliable, and damaged ones should not be used. The power cord connector should be wrapped with insulating tape.

6. When household appliances are continuously connected to the power supply, disconnectable switches or connectors must be adopted. It is forbidden to insert the wire directly into the socket hole.

7. Be sure to cut off the power supply when moving household appliances to prevent electric shock. It is forbidden to move household appliances by dragging wires; It is forbidden to pull the plug by dragging the wire.

8. Wet hands cannot touch live household appliances, and household appliances in use cannot be wiped with wet cloth. The power supply must be cut off before household appliances are repaired.

9. Household electric heating equipment and heating equipment must be far away from gas tanks and gas pipelines. When the gas leaks, first open the window for ventilation. Never connect the power supply, please ask professionals to repair it in time.

10. When using electric heating devices such as electric irons and soldering irons, be sure to stay away from flammable materials. After use, cut off the power supply and unplug it to prevent accidents.

1 1. Don't drag the power cord on the ground to avoid tripping people and damaging the insulation.

12. If household appliances are found to be damaged, please ask trained professionals to repair them, and don't disassemble them to prevent electric shock.

13. If household appliances burn, smoke or catch fire, the power supply must be disconnected immediately, and water or foam extinguisher shall not be sprayed.

14. For household appliances (such as hair dryer, electric soldering iron, etc. ) It is often used in your hands, and it is forbidden to wrap wires around your hands. Insulating gloves must be worn when using electric tools such as electric drills.

15. Household electricity should be equipped with qualified leakage protectors with overvoltage protection to ensure the personal safety of electrical appliances.

16. indoors, the power cord hidden in the wall should be placed in a special flame-retardant sheath, and the cross section of the power cord should meet the load requirements.

17. Household appliances that are often used should be kept dry and clean. Do not wipe the surface of household appliances with corrosive or conductive liquids such as gasoline, alcohol, soapy water and decontamination powder.

18. When taking a bath, the household electric shower must be powered off first, and reliable measures should be taken to prevent sudden electrification.

19. It is forbidden to use the power supply voltage of 220V for household doorbell and hair clipper, and safe power consumption below 36V should be used.

20. Don't get close to or touch any live parts of household appliances, especially the high-voltage output parts of black-and-white and color TV sets, so as to avoid electric shock.

2 1. If the incoming line is found to be in direct contact with trees and buildings, in order to prevent the wires from being worn out, trees should be cut down in time, or insulating sleeves should be added to the incoming line.

22. If someone gets an electric shock and can't directly contact the person who gets an electric shock, use a wooden stick or other insulation to remove the power supply, so that the person who gets an electric shock is separated from the power supply.

23. It is forbidden to connect wires from public lines without permission. It is forbidden to drill wells, set up TV antennas and fish under high and low voltage wires. It is forbidden to tie animals, ropes and drying items on the pole to avoid electric shock.

24. Don't touch trees, telephone poles and stay wires with your hands in thunderstorm weather to prevent electric shock.

25. Found that the wire is broken, whether charged or not, should be regarded as charged, should keep enough safe distance from the wire breakpoint, and report to the relevant departments in time.

26. It is necessary to advocate civilized and law-abiding use of electricity and put an end to all forms of illegal and illegal stealing of electricity.

4. All common sense of electricity use, short.

1, electric shock accident: (1) Definition: The injury caused by a certain intensity of current passing through human body belongs to electric shock accident.

(2) Danger: It is related to factors such as current size and power-on time. 2. safe voltage: The voltage is not higher than 36V.

The power circuit voltage of 380V and the household circuit voltage of 220V both exceed that of safe voltage. 3. Electric shock form of low-voltage circuit: single-line electric shock: people standing on the ground come into contact with the fire line; Double-wire electric shock: people come into contact with live wire and neutral wire at the same time.

The human body is a conductor. When the human body becomes a part of a closed circuit, current will flow. If the current reaches a certain level, an electric shock accident will occur.

If one hand touches the live line and the other hand touches the zero line, the human body and the wire form a closed circuit, and current flows through the human body, causing an electric shock accident. If one hand touches the live line and the other hand stands on the ground without touching the zero line, the conductor, human body and the earth will also form a closed circuit, and current will also flow through the human body, thus causing an electric shock accident.

4. It is easy to get an electric shock: (1) The insulation of wires connected with electrical appliances and sockets is damaged; (2) The electrical enclosure is not grounded; (3) drying clothes on the steel wire; (4) The outdoor antenna of the TV set is in contact with the wire; 5. Electric shock accident of court circuit (belonging to low-voltage electric shock): It is caused by direct or indirect contact of human body with live wires, and it forms a path with ground wire or zero wire. Therefore, it is necessary to distinguish between zero line and ground line. Although there is no voltage between the ground wire and the zero wire under normal circumstances, the ground wire and the zero wire must not be connected, otherwise it will easily lead to an electric shock accident.

6 voltage electric shock accidents: divided into high voltage arc electric shock and step voltage electric shock. 7. Principle of full power utilization: Do not touch low-voltage charged bodies, and do not approach high-voltage charged bodies.

8. Electric first aid: The current passing through the human body may stop the heartbeat and breathing, and the heat generated by the current will also burn the limbs. If someone gets an electric shock, never pull the electrocuted person directly. In this way, the person who saves lives will also become part of the closed circuit and get an electric shock.

The power supply should be cut off immediately, and the wire should be connected with insulation such as a dry stick, so as to save the electric shock. If the person who gets an electric shock stops breathing, artificial respiration should be given to the person who gets an electric shock as soon as possible, and medical personnel should rescue him.

5. How do primary school students use electricity safely?

First, learn to read the signs of safe use of electricity.

Clear and unified signs are important measures to ensure the safety of electricity use. Statistics show that many electrical accidents are completely caused by inconsistent signs. For example, because the wires are not uniform in color, the wires are connected to the casing of the equipment by mistake, which leads to electrification of the casing and contact casualties.

Signs are divided into color signs and graphic signs. Color signs are often used to distinguish wires with different properties and uses, or to indicate the safety level of a place. Graphical signs are usually used to warn people not to go near dangerous places. In order to ensure the safe use of electricity, color signs and graphic signs must be used in strict accordance with relevant standards. The standards adopted in China's safety color code are basically consistent with the draft international standard (ISD). The commonly used safety colors are as follows:

1, red: used to indicate prohibition, stop and fire fighting, such as signal lights, signal flags, emergency stop buttons on machines, etc. , all indicate "forbidden" information in red.

2. Yellow: used to mark danger. Such as "careful contact" and "pay attention to safety"

3, green: used to mark safety. For example, "working here" and "grounding gas".

4. Blue: used to mark enforcement, such as "Safety helmet must be worn".

5. Black: Geometry used to mark images, text symbols and warning signs.

According to the regulations, in order to facilitate identification, prevent misoperation and ensure the safety of operators and maintenance personnel, different colors are used to distinguish equipment features. Such as electrical bus, phase A is yellow, phase B is green, phase C is red, and the exposed grounding wire is painted black. In the secondary system, the AC voltage loop is yellow, the AC current loop is green and the signal and warning loop is white.

Second, the safety precautions:

With the continuous improvement of living standards, there are more and more places to use electricity in life. Therefore, it is necessary for us to master the following basic knowledge of safe use of electricity:

L, know the master switch, learn to turn off the master switch in an emergency.

2. Don't touch and test the inside of the power socket with your hands or conductive objects (such as wire, nails, pins and other metal products).

3. Don't touch the appliance with wet hands or wipe it with wet cloth.

4, electrical appliances should be unplugged after use; Do not pull the wire forcibly when plugging and unplugging the power plug to prevent the insulation layer of the wire from being damaged and causing electric shock; The insulation layer of the wire is peeling off, so it is necessary to replace the wire in time or wrap it with insulating tape.

5, found someone get an electric shock to try to turn off the power in time; Or use dry wooden sticks and other things to separate the electric shock victim from the charged electrical appliances, and don't save people directly by hand; Younger students should ask adults for help in this situation, and don't handle it by themselves to prevent electric shock.

6. Don't remove or install the power cord, socket and plug at will. Even if it is as simple as installing a light bulb, it should be turned off first and carried out under the guidance of parents.

Third, the common sense of home safety electricity use

1, the household power cord should not be overloaded, and the worn and aging power cord should be replaced in time to avoid accidents.

2. The total risk and home risk of household power supply should be reasonably configured to protect household appliances.

3, temporary power supply to use qualified power cord, power plug and socket to be safe and reliable. Damaged ones cannot be used, and the power cord connector should be wrapped with tape.

4. When the temporary power cord is close to the high-voltage transmission line, it should keep a sufficient safe distance from the high-voltage transmission line (10KV and below 0.7m; 35kV， 1m； 1 10kV， 1.5m； 220kv，3m； 500 kV, 5 meters).

5, it is forbidden to wiring from public lines.

6, line connector should ensure good contact and reliable connection.

7, room decoration, hidden in the wall of the power cord should be placed in a special flame retardant sheath, the power cord section should meet the load requirements.

8. Use electric tools such as electric drills. Insulating gloves must be worn.

9, in case of household appliances on fire, should first cut off the power supply, and then put out the fire.

10, the wiring of household appliances must be correct. Ask professionals if you have any questions.

1 1, household appliances should be equipped with qualified leakage protectors with overvoltage protection function to ensure personal safety when using household appliances.

12. When household appliances are used, they should have good shell grounding, and public grounding wires should be installed indoors.

13, wet hands can't touch live household appliances, can't use wet cloth to wipe household appliances in use, and power supply must be stopped before household appliances are repaired.

14, household electric heating equipment, heating equipment must be far away from gas tanks and gas pipelines. When the gas leaks, first open the window for ventilation, never turn on the power supply, and ask professionals to repair it in time.

15, using electric irons, soldering irons and other electric heating devices. Must stay away from flammable materials, cut off the power supply and unplug the bolt after use to prevent accidents.