The scorching summer heat is unbearable.
Air conditioning, electric fan, refrigerator
They have become good partners that we cannot do without.
However
While enjoying the coolness
We cannot ignore electrical safety either!
Small knowledge on summer electricity safety
Let's go on a scorching summer day
Enjoy comfort while ensuring safety!
Avoid using high-power appliances simultaneously, especially during peak electricity usage periods.
Large capacity electrical equipment such as air conditioners and ovens must use dedicated circuits.
Wires cannot be pulled or connected randomly, and multiple electrical appliances cannot use the same socket.
Close the doors and windows while turning on the air conditioner to minimize unnecessary energy consumption.
Regularly inspect electrical circuits.
Focus on inspecting the joints of the circuit and promptly replace them with new ones if aging problems are found.
The sockets of various electrical appliances should be kept away from sources of fire. If the power cord is damaged, it should be promptly wrapped with insulating tape to prevent short circuits.
In summer, the sun is strong. Electrical appliances should be placed in areas without direct sunlight or in dark places, with good ventilation. After using the appliances for a period of time, they should be allowed to rest appropriately and avoid prolonged continuous use. Flammable materials are prohibited from being placed around the appliances.
During the hot season, people sweat a lot and their hands are often wet, while sweat is conductive.
Do not move running household appliances such as table fans and washing machines with your hands on hot days.
If you need to move it, you should first turn off the switch and unplug the power.
If someone is found to have been electrocuted, the power switch should be immediately turned off or the power plug should be unplugged to quickly disconnect the person from the power source.
When using electric irons, hair dryers, and other appliances, do not leave.
Do not hire unqualified decoration teams and personnel to lay wires and install electrical equipment.
Before thunderstorms, indoor appliances should be turned off, plugs, telephone lines, and closed-circuit antennas should be unplugged;
During thunderstorms, do not touch power switches and electrical equipment, avoid using solar water heaters, and avoid standing next to metal water pipes entering the house or drainage pipes connected to the roof to prevent lightning and electric shock;
If you are outdoors, do not approach power facilities such as iron towers, poles, transformers, distribution boxes, etc., and also stay away from high-voltage power lines.
The sockets in some areas of the home are often stained and stained due to lack of cleaning, such as the kitchen, bathroom, etc. Over time, the dusty power strip will pose a safety hazard of "accumulation of dirt and conductivity", which can cause poor circuit contact and, in severe cases, local heating, deformation of the insulation resin of the socket, and ultimately cause a short circuit and fire.
Keeping a certain distance between power and fire sources can reduce the risk of fire. Firstly, the high temperature of the fire source may cause the power equipment to overheat, leading to damage and even fire; Secondly, if there is a malfunction in the power supply line or equipment, such as short circuit, leakage, etc., contact with a fire source may directly lead to fire or electric shock accidents.
overload
What situations in life can cause circuit overload?
(1) Incorrect selection during design and installation resulted in the rated capacity of electrical equipment being less than the load capacity.
(2) Random installation of equipment or wires can increase the load and cause overload operation.
(3) Failure to conduct timely maintenance and repair can result in equipment or wires being in a state of long-term operation with defects.
(4) Unstable power supply voltage or voltage loss caused by faults.
Short circuit, arc, spark
Reasons for short circuits
(1) The selection and installation of electrical equipment do not match the usage environment, resulting in damage to its insulation under high temperature, humidity, acid and alkali environmental conditions.
(2) Electrical equipment has been used for too long, exceeding its service life and causing insulation aging and brittleness.
(3) Improper use and maintenance, long-term operation with problems, have expanded the scope of the malfunction.
(4) Overvoltage causes insulation breakdown.
(5) Incorrect operation or switching power to the faulty circuit
poor contact
Common poor contact of electrical equipment
(1) Poor contact between wires and sockets
(2) Poor contact of wire connectors
(3) Poor contact of electrical equipment itself
How to avoid poor contact of the circuit
(1) Regularly conduct line safety inspections. Professional personnel should be invited to conduct a comprehensive and thorough inspection of wires, electrical equipment, etc. at least once a year, especially for circuits with long service life joints. If unsafe conditions such as aging, damage, and poor insulation are found in the wires, they should be repaired and replaced in a timely manner to ensure electrical safety.
(2) When choosing wires, be sure to identify legitimate manufacturers, check the quality carefully, and do not buy unqualified wires just because they are cheap.
Bake
What should be paid attention to when using small sunshades and other heaters?
(1) When choosing an electric heater, products with "3C" certification and overheating protection devices should be selected.
(2) Electric heaters should be placed in areas that are not easily accessible to children, and kept away from flammable materials. The back should be about 20 centimeters away from the wall.
(3) The socket should not be located directly above the electric heater to prevent heat from rising and burning the power supply.
(4) Avoid sockets and electric heaters from coming into contact with water.
(5) The surface temperature of the electric heater is relatively high, so there should be no covering on it, and the electric heater should not be used to bake clothes.
Avoid short circuits
1. It is necessary to strictly follow the electrical installation regulations and technical management regulations, and strictly prohibit non electricians from installing and repairing.
2. Different types of wires should be selected according to the specific environment in which they are used, and the correct distribution method should be chosen.
3. When installing wiring, a certain distance should be maintained between wires and between wires and building components or trees; Wires within 2 meters above the ground should be protected with steel pipes or hard plastic to prevent insulation damage.
Overloading is strictly prohibited
1. Select appropriate wires based on the load situation.
2. It is strictly prohibited to use copper wire or iron wire as a substitute for fuses.
3. Do not randomly pull wires or connect excessive or high-power electrical equipment.
4. Check and remove excessive electrical equipment on the line, or replace it with larger capacity wires in a timely manner according to the development of the line load. According to the production process and needs, adopt the method of arranging and controlling the use in sequence, and adjust the power consumption time to ensure that the line does not exceed the load.
Avoid excessive contact resistance
1. The connection between wires and wires, wires and electrical equipment must be firm and reliable.
2. Copper and aluminum wires should be connected using copper aluminum transition joints. Tin foil can also be used to pad the copper aluminum lifting head, or tin can be coated at the copper wire joint.
3. It is not allowed to use this wire as a connector through connectors with high current. Oil or oxygen welded connectors should be used, and elastic plates should be added and tightened during connection.
4. Regularly inspect and test the joints to prevent an increase in contact resistance, and strengthen monitoring of important connecting joints.
