In the midsummer, due to the large-scale use of various types of electrical appliances, the incidence of electrical fires is also on the rise. Looking at the fire statistics in recent years, it can be seen that the proportion of fires in electrical appliances in summer accounts for more than 80% of the total number of electrical fires in the year.
From this data, we can see that summer is the peak period of electrical fires. Therefore, we must increase vigilance, strengthen the awareness of disaster prevention, and take precautions to ensure the safe operation of electrical appliances in the summer and keep electrical fires away from us.
There are many reasons for electrical fires, mainly due to improper use of equipment, short circuit caused by overload, and excessive sparking and arcing.
Improper use of electrical equipment. Due to the lack of common sense of safe use of electricity, electrical equipment is not used according to the instructions and precautions of electrical appliances, resulting in failure of electrical equipment to generate heat or sparks, arcs causing flammable materials and buildings to catch fire. The contact resistance of the line part is too large. Between the wires, the wires are connected with electrical appliances, switches, fuses, knives, etc., because the connection is not good, the joints are loose or contaminated with oxides, dirt, oil and other impurities, the contact resistance at the joints is greatly increased, causing contact Strong heat, causing the temperature to rise causes the insulation to burn, resulting in a fire.
The line is overloaded. With the improvement of living standards, the continuous configuration of household appliances, the installation of excessive or excessive power equipment in the line, combined with the original design and installation of the line, the improper selection of the wire cross-section, the actual load exceeds the distribution line Load capacity. As a result, the wire is heated, causing extreme heat, causing the wire insulation to burn and igniting nearby combustibles to cause a fire.
Use fake and shoddy electrical products. Wires, switches, sockets, knives, etc. that connect power and electrical equipment, use counterfeit and shoddy products. These products do not meet the technical requirements. During use, the surface or components will generate high temperatures and ignite nearby combustibles. on fire.
We know that the cause of a fire in an electrical appliance requires a targeted "precautionary medicine" to prevent accidents and prevent electrical fires.
When designing and installing electrical circuits, it should be reasonably designed and configured according to technical standards. The cross-section of the wires in the distribution line should be reasonably selected according to the actual load in the circuit, and the wires should be strictly controlled and the excessive load should be connected. When the number of electrical equipment increases, the line should be redesigned and installed according to the actual load to ensure that the line is not overloaded.
According to the appropriate selection of wires, fuses, switches, knives, etc., it is necessary to use qualified products from regular manufacturers, and it is forbidden to use counterfeit and shoddy electrical products. Safely and reasonably use electrical equipment in accordance with the instructions and precautions for electrical appliances, and always carry out necessary maintenance and maintenance work on electrical equipment.
During the peak period of electrical use, check the connection of wires and wires, wires and electrical equipment to ensure that the contact is firm and reliable. If the joint is found to be loose or hot, it should be tightened or properly treated in time.
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