1. Don't overload electricity. If the power load exceeds the specified capacity, it shall apply to the power supply department for capacity increase. Large-capacity electrical equipment such as air conditioners and ovens should use dedicated lines.
2. Choose qualified electrical appliances, and don't buy and use fake and inferior electrical appliances, wires, trunking (pipes), switches, plugs and sockets.
3. Don't lay wires and connect electrical equipment without permission or ask unqualified decoration teams and personnel. Find qualified units and personnel to install and repair electrical appliances.
4. Do a good job of grounding protection for the metal shell of electrical appliances requiring grounding, and don't forget to install grounding wire for the three-eye socket and socket box; Don't change the three-eye plug into two-eye plug at will.
5. We should choose the fuse suitable for wire load, and don't arbitrarily thicken the fuse. It is forbidden to use copper wire, iron wire and aluminum wire instead of fuse.
6. Don't wipe the charged lamp holder, switch and socket with wet hands or wet cloth.
2. What is the common sense of safe use of household appliances?
When buying household appliances, you should buy qualified products recognized by the state, and don't buy "three noes" fake and shoddy products.
Read the product manual carefully after purchase, pay attention to the voltage and power, and do not exceed the allowable load of household power sockets, fuses, meters and wires before use. First, the common sense of safe use of household appliances (1) When buying household appliances, you should buy qualified products recognized by the state, and don't buy "three noes" fake and shoddy products.
Read the product manual carefully after purchase, pay attention to the voltage and power, and do not exceed the allowable load of household power sockets, fuses, meters and wires before use. (2) When installing household appliances, pay attention to the use environment of the appliances.
Do not install household appliances in damp, high temperature, dusty, flammable and corrosive environments. (3) Kitchen, storeroom and other places that are easy to be affected with damp and corrode, always check for leakage. Generally, the test pen can be used to test on walls, floors and equipment shells.
(4) When using household appliances, the power cord should have a complete and reliable plug. It is not allowed to insert the wire directly into the socket. Don't use two-pin plugs and two-pin sockets instead of three-pin plugs and three-pin sockets, so as to avoid charging the metal shell of household appliances due to wrong plug connection and causing electric shock casualties. (5) Electric heating equipment, such as electric heaters, electric stoves, electric heaters, electric showers, electric irons and soldering irons. The current is high and the heat is high, so everyone should switch on and off by themselves. It is forbidden to operate with plugs, and the socket capacity should meet the requirements.
(6) Switches and fuses are not allowed to be installed on the ground wire and zero wire. It is forbidden to connect the grounding wire to pipes such as tap water, gas and heating.
(7) When using household appliances, don't touch the switch and shell with wet hands. Use electric appliances such as hair dryer and soldering iron, and don't wind wires on your hands.
When moving electrical appliances, cut off the power supply and don't pull the wires by hand. (8) Don't pull wires or connect electrical equipment randomly, and don't use the method of "one line at a time" to connect electricity.
(9) When the insulation of the power cord of household appliances is damaged, it should be wrapped with insulating cloth, and it is forbidden to wrap it with medicinal tape such as Shangshi Zhitong Ointment. (10) After using household appliances, cut off the power supply at any time.
When it is necessary to cut off the power supply in case of sudden emergency, be sure to cut the wire with electrician tongs, and don't pull the wire by hand. (1 1) Don't fly kites, shoot birds or install antennas near power lines, don't tie animals to poles and stay wires, and don't dig holes or borrow soil near poles and stay wires to prevent poles from breaking.
(12) In case of electrical equipment failure or leakage fire, immediately turn on the power switch, and do not use water or acid-base foam extinguisher to extinguish the fire before cutting off the power supply. (13) Don't hang clothes on the wires to avoid electric leakage and electric shock due to damaged insulation.
(14) The wire breaks and falls to the ground, so don't go near it. 10kV high-voltage line should be at least10m away from the conductor landing point, and report to relevant departments for emergency repair in time. (15) Don't touch the lamp holder, switch and socket with wet hands.
When replacing the light bulb, turn off the switch first, and then stand on the dry insulation. Don't pull the light wire too long or pull it around.
(16) If women find someone getting an electric shock, they should quickly cut off the power supply or connect wires with dry wooden sticks, bamboo poles and other insulators, so that the person who gets an electric shock can be separated from the power supply immediately. If the person who gets an electric shock is in a coma and stops breathing, he should be given artificial respiration immediately and sent to the hospital for rescue as soon as possible.
(17) When digging the ground, you must first contact the local power supply department, read the signs indicating the location of underground cables, and take reliable measures to prevent accidental injury to cables, causing casualties, power outages and other accidents. (18) Do not pile combustible materials such as coal and other items near poles, substations, power distribution rooms and switch boxes in buildings to build houses.
This poses a threat to the safe operation of equipment, and also brings difficulties to the maintenance and repair of electrical equipment, which affects the fire escape and causes hidden dangers. (19) Don't arbitrarily post publicity materials on poles, distribution rooms and switch boxes in the building, so as not to block the operation signs and affect the emergency repair work.
(20) It is forbidden to climb poles, transformers, etc. It is forbidden to open the switch box door in the distribution room and the building without permission to avoid accidents. (2 1) It is forbidden to lift (high) cars or set up scaffolding near overhead power lines.
(22) When household appliances or wires catch fire, before cutting off the power supply, it is forbidden to put out the fire with water to prevent electric shock accidents. Second, the shell of household appliances Most household appliances are made of single-phase power supply, whether with motors, such as electric fans, hair dryers, refrigerators, etc. Or transformers or heating wires, such as televisions, irons, incandescent lamps, etc. If the shell is not grounded, although there is no problem with its own insulation, its metal shell often appears "charged" phenomenon, which can make the test pen glow, but ordinary voltmeter can't measure it.
At this time, you can carefully check and judge with a test pen. (1) The power supply is AC and DC appliances or wires below 500 V. When the shell or skin is tested with a pencil under normal power-on, the neon light bulb will not emit light.
When the insulation performance drops, leakage or damage occurs, breakdown occurs, and wiring errors occur due to some reasons, such as moisture, aging and damage of insulation, neon bulbs will glow. Its brightness is proportional to the measured voltage. The higher the voltage, the brighter the neon bubble.
(2) Method of distinguishing live wire from neutral wire: When testing 220/380V three-phase four-wire power supply line, the conductor to be tested that makes neon bulbs glow is live wire, and the conductor that does not glow is zero wire. (3) Method for judging alternating current and DC: When testing alternating current, both ends of neon lamp bulb are lit; When testing direct current, only one end (negative end) is on.
3. What are the common safety knowledge of household appliances?
1. It is forbidden to move running household appliances by hand, such as desk fans, washing machines, televisions, etc.
2. It is forbidden to repair live lines or equipment at home by hand.
3. It is forbidden to touch with wet hands and wipe lamps, switches and other electrical appliances with wet cloth.
4. It is forbidden to change the three-eye plug into two-eye plug at will.
5. It is forbidden to pull and connect wires indiscriminately.
6. Without permission, it is forbidden to install electrical appliances on the original line.
7. Unqualified electrical equipment is strictly prohibited.
8. It is forbidden to use electric irons, hair dryers, electric stoves and other electrical appliances without supervision.
9. Fishing, theft prevention and hunting in private power grids are prohibited.
10. It is forbidden to use lead wire and copper wire instead of fuse as fuse. Wait a minute.
4. What are the tips for electricity safety?
Pay attention to the following points when using electricity safely:
1, don't go barefoot to repair or move live lines or equipment at home, such as desk fans, washing machines, televisions, etc. , to avoid electric shock;
2. Don't touch electricity with metal, don't touch the power supply when your hands are wet, and don't wipe lamps, switches and other electrical appliances with wet cloth;
3. Install the three hole socket correctly, and don't change the three-hole plug into two-hole plug at will;
4. Use the power cord correctly, and don't pull and connect the wires indiscriminately;
5. Do not install electrical appliances on the original line without permission;
6. Use household appliances correctly, and do not use electrical equipment that does not meet safety standards;
7. Develop good habits. Unplug the electric iron, hair dryer, electric stove and other appliances when they are unattended or not used for a long time.
8, lead wire, copper wire, etc. are strictly prohibited. Replace the fuse as a fuse;
9. Use leakage protector to prevent personal electric shock and electrical fire.
I hope our answer is helpful to you.
5. Small knowledge of household electricity safety
First, the home circuit.
1. The main components of household circuits are low-voltage power supply lines, voltmeters, knives, fuses, electrical appliances, sockets and switches.
2. Connection mode: All electrical appliances in the home circuit are connected in parallel, and each electrical appliance is connected in series with an open circuit. The on-off of one electrical appliance will not affect the normal work of other electrical appliances, and each socket in the circuit is connected in parallel. The insertion of useful electrical appliances will not affect the normal use of other electrical appliances.
3. Distinguish between live wire, neutral wire and ground wire: The low-voltage power supply line is connected to the household circuit by two wires, and there is no voltage between one wire and the ground, which is called zero wire. There is a voltage of 220V between the other one and the ground, which is called the live wire. The voltage between live wire and neutral wire is 220 volts. In three hole socket, there is a wire connecting the shell of household appliances with the earth, which is called grounding wire. Although the voltage between the ground wire or live wire and the zero line is 220V, the ground wire and the zero line must not be connected, otherwise it is easy to cause an electric shock accident. You can use a test pen to distinguish between live wire and zero wire. Touch the metal body at the end of the pen with your hand, and the tip of the pen touches the wire (or the wire connected with the wire). If the neon tube glows, it means it is in contact with the fire line.
4. The watt-hour meter is used to measure how much electricity users use, and it is installed in front of the user's main switch. Electric energy meters can be used to measure the power of electrical appliances. 5. Function of fuse: fuse is used to protect the circuit. Lead-antimony alloy is used for household insurance, with high resistivity and low melting point. When the current is too large, it will generate more heat to make the temperature reach the melting point and automatically fuse and cut off the circuit. Remember not to use other wires instead of fuses. Selection of fuse: it is normal that the amount of I is greater than I. The fusing current of a general fuse is about twice the rated current.
Second, there are basically two reasons for the excessive current in household circuits.
1. Short circuit: Short circuit means that the current directly connects the neutral line and the live line without going through the electrical appliance. In order to avoid short circuit, it is necessary to check the line in time to see whether the conductor or insulation layer is damaged, whether the wire is bumped or damp.
2. The total power of electrical appliances is too large: when the voltage between live wire and neutral wire is constant, the main current I = p/u ... When the more electrical appliances are connected in parallel, the greater the total power P and the greater the current I, which is the same as the result of short circuit. The current I is large enough to heat the fuse and automatically cut off the circuit. If there are several high-power appliances connected at home, remember to stagger the use time.
Third, the common sense of safe electricity use.
1, cause of electric shock: the human body is a conductor, and the resistance is about 1000 ohm (only varies from person to person). When people get an electric shock, the current will flow into the earth through the human body, and the human body will directly or indirectly touch the fire line, and people will get an electric shock accident. When the current flowing through human body increases to 1 mA, people will feel numb. When the current exceeds 8~ 10 mA, it is difficult for human hands to leave the charged body. When the current passing through the human body reaches 100 mA, people will suffocate and stop their heartbeat in a short time. Therefore, the main cause of electric shock death in human body is that large current passes through human body. Practice has proved that only the current not higher than 30~40 mA and not higher than 36 volts is safe.
2, the form of electric shock:
(1) Single-line electric shock: When a person stands on the ground, his hand touches the fire line or an object connected with the fire line.
(2) Double-line electric shock: People get an electric shock when their hands touch the live wire and the ground wire respectively.
(3) High-voltage arc electric shock: People get close to high-voltage lines (or high-voltage charged bodies), causing air arc discharge and getting an electric shock (lightning is the same).
(4) High-voltage step voltage electric shock: When a person walks into the place where the high-voltage line falls, the step voltage between the front and rear legs exceeds 36 volts and he gets an electric shock.
3. Rules for safe electricity use: Do not touch low-voltage charged bodies (such as 220 volts) and do not approach high-voltage charged bodies.
4. Electric shock first aid:
(1) cut off the power supply quickly (turn on the master brake or master switch);
(2) Turn on the power cord with a dry stick and a bamboo stick, so that the person who gets an electric shock can quickly disconnect the power supply;
(3) In case of electrical fire, all parties must cut off the power supply first, and then splash water to put out the fire;
(4) artificial respiration rescue.
6. What is the common sense of household electricity safety?
(1) Use the power cord correctly. The main line of household power cord should be at least 4mm2 copper core wire, aluminum skin wire or plastic sheath line, and good quality flexible cord should be used for electrical equipment that moves frequently. The seriously aged wires should be replaced in time.
(2). Don't use metal to get an electric shock; Don't touch the power supply when your hands are wet.
Metal objects are conductive. Never touch the power supply with metal objects such as screwdrivers and nails to avoid electric shock. It is dangerous and impossible for us to touch water with our hands, including wet towels, and to touch the power supply.
(3) Use household appliances correctly. Read the instruction manual of electrical appliances carefully, and pay attention to its precautions and maintenance requirements. General household appliances should not be switched on and off frequently. After use, not only turn it off, but also unplug it. If the temperature is abnormal, the power supply should be cut off for inspection and troubleshooting, and a voltage regulator should be added to the line.
(4) form good habits;
That is, when plugging and unplugging the power supply, it is very dangerous not to hold the power supply by hand, but to hold the wire by hand. If the wire is aging, it is easy to get an electric shock.
(5) Do a good job in fire prevention and extinguishing. When people leave home or sleep, check whether the electrical appliances are cut off. In case of electrical fire, don't panic. First, cut off the power supply in time and shout for help to the neighbors. Call the fire alarm number 1 19. At the same time, use the water, wet quilt or fire extinguisher prepared at ordinary times to extinguish the fire quickly.
I hope our answer is helpful to you.
7. Fifteen Common Sense of Safe Electricity Use
15 words cannot be answered.
I. Summarize the electricity consumption and maintain electrical equipment when taking necessary safety measures. Electric energy is a convenient energy source, and its wide application has formed the second technological revolution in modern human history.
It has effectively promoted the development of human society, created great wealth for mankind and improved human life. Second, the harm of electricity If you don't pay attention to the safe use of electricity in production and life, it will also bring disaster.
For example, electric shock may cause personal injury or death, electric sparks caused by equipment leakage may lead to fire and explosion, and high-frequency electrical equipment may produce electromagnetic pollution. Third, electricity safety 1. How to use electricity safely? The heat in summer is unbearable, and the air-conditioning electric fan is also turning.
Fire and electric shock accidents caused by the use of these electrical appliances occur every year. How to make science of electricity safe is an important matter that every family must pay attention to. First of all, the bearing capacity of watt-hour meter and low-voltage line should be considered.
The electric power that a watt-hour meter can withstand is similar to the value of voltage multiplied by current. The voltage of domestic electricity is 220 volts. For example, if a 2.5-amp watt-hour meter is installed at home, the power it can withstand is 550 watts, and a 600-watt rice cooker cannot be used. In this way, the electric power that a 5-amp watt-hour meter can bear is 1 100 watt.
Secondly, it should be considered that a socket allows several appliances to be plugged in. If the sum of the maximum power of all electrical appliances does not exceed the power of the socket, there is generally no problem.
When using sockets with more than three pairs of jacks and using high-power appliances such as air conditioners, electric cookers, rice cookers and electric water heaters at the same time, the sum of the powers of these appliances should be calculated first. If the limited power of the socket is exceeded, the socket will burn out due to excessive current. At this time, the number of electrical appliances used at the same time should be reduced to keep the total power within the allowable range of the socket.
In addition, the installed circuit breaker must use the corresponding standard fuse. Do not use other metal wires instead, otherwise it will easily cause fire and damage electrical appliances.
If there is a fire caused by the fire of household appliances, be sure to cut off the power supply first and then put out the fire to avoid electric shock and personal injury. 2. Safe ways to use electricity The popularity of household appliances such as refrigerators, televisions, washing machines and air conditioners has brought a lot of convenience to people's lives.
But pay attention to the safe use of power supply to avoid unnecessary harm. Electrical appliances with metal shell should use three-pin power plug.
Some household appliances may leak electricity when they fail or get wet. Once the shell is charged, use a two-pin power socket, which may cause electric shock after human contact.
Household appliances that consume a lot of electricity should use a separate power socket. Because both wires and sockets have specified current carrying capacity, if a variety of electrical appliances share a power socket, when the current exceeds its rated flow, the wires will heat up, and the plastic insulating sleeve may melt and cause combustion.
When the voltage fluctuates greatly, use a protector. In daily life, there is often an instantaneous power failure or power supply voltage fluctuation, which is a threat to the refrigerator.
If the power supply is restored within a short time (3~5 minutes) after the power failure, the starting current of the refrigerator compressor is several times larger than the normal starting current, which may burn out the compressor. Fourth, how to use electricity safely 1, why must the lighting switch be connected to the fire line? If the lighting switch is installed on the zero line, although the light is not on when it is turned off, the phase line of the lamp holder is still on, and people will think that the light is not on and will mistakenly think that it is in a power-off state.
In fact, the ground voltage of each point on the lamp is still a dangerous voltage of 220 volts. If people touch these actually charged parts when turning off the lights, it will cause an electric shock accident.
Therefore, all kinds of lighting switches or switches of single-phase small-capacity electrical equipment can only be connected in series on the live line to ensure safety. 2. How to correctly install the single-phase three hole socket? Why? Usually, single-phase electrical equipment, especially mobile electrical equipment, should use three-core plug and its supporting three hole socket.
There is a special protective zero (grounding) jack in three hole socket. When using zero protection, it is very dangerous for someone to directly connect the wiring pile head of this hole with the zero line that only leads into the socket at the bottom of the socket. Because in case the zero line of the power supply is disconnected, or the fire (phase) line and the zero line of the power supply are connected reversely, its shell and other metal parts will also bring the same voltage as the power supply, resulting in electric shock.
Therefore, when wiring, the special grounding jack should be connected with the special protective grounding wire. When zero protection is adopted, the zero line should be led out from the power supply side, and the zero line introduced into the socket should not be used nearby.
3. Why is it forbidden to bury plastic insulated wires directly in the wall? (1) Plastic insulated conductor will age and crack after long-term use, and the insulation level will be greatly reduced. When the line is overloaded or short-circuited, it is easier to accelerate the insulation damage. (2) Once the wall is damp, it will cause a large area of leakage and endanger personal safety.
(3) Plastic insulated wires are directly buried, which is not conducive to line maintenance and repair. 4. Why should I use a leakage protector? Leakage protector, also known as leakage protection switch, is a new type of electrical safety device. Its main purpose is: (1) to prevent electric shock accidents caused by leakage of electrical equipment and electrical lines.
(2) To prevent single-phase electric shock accidents in the process of electricity utilization. Jialichuang (3) cut off the single-phase grounding fault in the operation of electrical equipment in time to prevent electrical fire accidents caused by leakage.
(4) With the improvement of people's living standards, the number of household appliances is increasing. In the process of using electricity, personal electric shock and fire accidents caused by defects in electrical equipment, improper use and unfavorable safety technical measures have brought undue losses to people's lives and property. The appearance of leakage protector provides a reliable and effective technical means for preventing all kinds of accidents, cutting off power supply in time and protecting equipment and personal safety. 5. What is the main cause of electric shock accident? Statistics show that the main causes of electric shock accidents are: (1) lack of knowledge about electricity safety, flying kites near high-voltage lines and climbing high-voltage poles to dig nests; After the low-voltage overhead line is disconnected, connect the fire line by hand without power failure; Touch the charged body by hand for live wiring at night; Touch the broken rubber knife switch with your hand.
(two) in violation of the operating rules, without taking necessary safety measures, unauthorized connection of lines or electrical equipment; Touch damaged equipment or wires; Wrong installation of live equipment; Electrified lighting; Online maintenance of power tools; Live mobile electrical equipment; Twist a light bulb, etc with wet hands. (3) The equipment is unqualified and the safety distance is unqualified.
8. Common sense of using household appliances
1. Precautions for new purchases: Before using the newly purchased household appliances, you should first carefully check the technical specifications on the product manual, such as whether the power supply type is AC or DC, whether the power supply frequency is 50HZ, whether the power supply voltage is 220V for home use, and whether it meets the existing power supply capacity of the family, especially the plug and socket, fuse, watt-hour meter and wire. If the load exceeds the allowable limit, it will heat up, damage the insulation and cause electricity consumption.
After the above contents are verified, installation and power supply can be considered. 2. Precautions for new purchase and installation: When installing household appliances, you should check the requirements of the product manual for the installation environment, and pay special attention not to install household appliances in an environment with damp heat, dust or flammable and corrosive gases as much as possible.
3. Precautions for power connection of household appliances: You must use a switch or plug that can be closed, and it is forbidden to directly insert wires into socket holes. Three-pin plugs and three-eye sockets should be used in places that need protective grounding or safe zero connection, and the pins and sockets for grounding and zero connection should be strictly distinguished from the phase pins and sockets. It is forbidden to use symmetrical two-pin plug and two-eye socket instead of three-pin plug and three-eye socket to prevent the wrong connection, which will lead to the electrification of the metal shell of household appliances and cause electric shock accidents.
The ground wire is connected to the neutral wire. Although it is dead under normal circumstances, in order to ensure that the wire specification is not lower than the phase line, it is forbidden to install switches or fuses on it, and it is forbidden to connect it to tap water, heating, gas or other pipelines at will. 4. Precautions before power-on trial operation: All switches and handles should be placed in the original stop position according to the relevant operation instructions, and operated in the start-stop operation sequence required in the instructions. If there are moving parts, sufficient motion space should be considered in advance.
If there is any abnormal phenomenon after power-on, stop the machine immediately and cut off the power supply for inspection. 5. Precautions for the use of household appliances: During use, it is forbidden to touch the live switch or the metal shell of household appliances with wet hands, and it is also forbidden to replace electrical components or light bulbs with wet hands.
For household appliances that are often held in your hand, such as hair dryers, it is forbidden to wind the power cord around your hand. It is forbidden to move household appliances by dragging wires. If you need to move, you should cut off the power first, and it is forbidden to pull it out by pulling wires. General household appliances should not be used continuously for a long time (except refrigerators), especially those that people often contact. It is best to install overheating protection. In the process of use, if you find abnormal smell and noise, you should stop using it. 6. Precautions after use: After using household appliances, cut off the power supply at will. When it is necessary to cut the wire in an emergency, insulated electrician tongs or cutting tools with insulated handles must be used.
7. Precautions for fuse of household appliances: It is forbidden to replace fuse with copper wire for household appliances, and it is forbidden to replace electrical tape with ordinary adhesive tape or wet pain-relieving ointment. 8. Daily maintenance and inspection: household appliances that are frequently used should be kept dry and clean, and the insulation of power supply lines and electrical equipment should be checked regularly. If any damage is found, it should be wrapped with electrical tape in time; Household appliances that have not been used or reused for a long time before the rainy season can be considered as well insulated and in normal use as long as their insulation resistance is not lower than 1 megohm measured by a 500V shaking table.
Television: it should be placed in a cool and ventilated place, free from direct sunlight and collision. Do not touch the screen with wet cold cloth or cold water drops after starting, so as to avoid the explosion of the picture tube. In areas with high humidity or rainy season, it is necessary to start the machine every day to prevent the machine from getting wet. It is not allowed to open the cover to check or clean the dust with electricity. Do not turn on the machine if the voltage is too high or too low. If there is an outdoor antenna, stop receiving and unplug the antenna.
2. Electric fan: there must be grounding or zero protection. The three-pin plug is used to connect the power supply. The fan that shakes its head should be careful not to touch the wall to prevent children from putting their fingers into the range hood. Don't touch the wire when moving the electric fan, and check the insulation regularly to prevent leakage.
3. Electric iron: it must be protected by grounding or zero connection and connected with a three-pin plug. After use or immediately after use, it should not be placed on flammable items. Cut off the power supply immediately after use to prevent fire caused by high temperature. Don't beat other items with an iron to prevent internal damage. 4. Washing machine: There must be grounding or zero protection. Use a three-pin plug when connecting the power supply, and you can't pull the plug with wet hands. When rotating parts such as dehydration, washing tub, pulsator and agitator are running, it is forbidden to put your hand into the tub. When the motor is found to be stuck or has abnormal sound or smell, the power supply should be cut off immediately and stop using it.
5. Vacuum cleaner: When using, pay attention to the hanging, pulling, pressing and stepping of the cable to prevent insulation damage, remove garbage or dust in time, prevent the motor from burning out due to the blockage of the suction port, and prohibit the inhalation of flammable dust. If double insulation or safe voltage protection is not used, grounding and zero protection should be set, and the power switch should be convenient to cut off the power supply in case of emergency. Refrigerator: it should be placed in a dry and ventilated place, and attention should be paid to prevent direct sunlight or close to other heat sources.
Grounding or neutral protection must be adopted, and a three-pin plug should be used to connect the power supply. The power cord should be far away from the compressor heat source to avoid burning insulation and causing leakage. Do not wash with water, and do not store alcohol, light gasoline and other volatile and flammable items in the refrigerator, so as to avoid an explosion accident caused by electric spark.
7. Air conditioning: General air conditioning consumes a lot of electricity. Before use, please check whether the power fuse, watt-hour meter and wires have enough margin. Before use, the air inlet cover must be removed to make the air inlet and capillary unblocked to prevent the air compressor from burning due to insufficient refrigerant. When in use, the refrigeration and heating switch cannot be switched immediately, and the on-off switch cannot be operated frequently, otherwise the compressor pressure will increase, leading to overheating. Grounding or zero protection must be adopted, and the insulation resistance before using household appliances should not be less than 2 megohms. Common sense: VCD and CD discs should be authentic as far as possible. Don't choose songs too frequently and don't amplify too much. High-power amplifier should turn down the volume before turning on the DVD and +AV amplifier, turn on the DVD before turning on the amplifier, otherwise turn off the amplifier. When turning off DVD and karaoke, turn down the MIC volume first and then turn on the microphone to avoid howling when the volume is high and damage the speaker. The microphone should be away from the speaker, and the speaker should be away from the TV.
9. What is the common sense of household electricity safety?
(1) Use the power cord correctly.
The main line of household power cord should be at least 4mm2 copper core wire, aluminum skin wire or plastic sheath line, and good quality flexible cord should be used for electrical equipment that moves frequently. The seriously aged wires should be replaced in time.
(2). Don't use metal to get an electric shock; Don't touch the power supply when your hands are wet. Metal objects are conductive. Never touch the power supply with metal objects such as screwdrivers and nails to avoid electric shock. It is dangerous and impossible for us to touch water with our hands, including wet towels, and to touch the power supply.
(3) Use household appliances correctly. Read the instruction manual of electrical appliances carefully, and pay attention to its precautions and maintenance requirements.
General household appliances should not be switched on and off frequently. After use, not only turn it off, but also unplug it. If the temperature is abnormal, the power supply should be cut off for inspection and troubleshooting, and a voltage regulator should be added to the line.
(4) form good habits; That is, when plugging and unplugging the power supply, it is very dangerous not to hold the power supply by hand, but to hold the wire by hand. If the wire is aging, it is easy to get an electric shock. (5) Do a good job in fire prevention and extinguishing.
When people leave home or sleep, check whether the electrical appliances are cut off. In case of electrical fire, don't panic. First, cut off the power supply in time and shout for help to the neighbors. Call the fire alarm number 1 19. At the same time, use the water, wet quilt or fire extinguisher prepared at ordinary times to extinguish the fire quickly.
I hope our answer is helpful to you.