What are the causes of fire caused by electrical equipment

A, transformers in household appliancesThe transformer of household appliances is generally composed of an iron core, a primary coil and a secondary coil. The primary coil is connected to the AC power supply, the secondary coil is connected to the load. Transformer work, in the electromagnetic energy conversion process will inevitably lose a certain amount of energy, so the transformer will heat. Even after the load of the secondary coil is disconnected, there is still a certain amount of current on the coil, i.e. no-load current, because the primary coil is still energized. Secondly, the power line capacity is insufficient and the insulation is aging With more and more household appliances, the load on the power line is also increasing, making the original power line overloaded. In addition, most of the roofs of these old houses are wooden, and the roofs of these wooden structures are particularly dry. In addition, since the power cords have not been replaced for many years, the skin naturally ages. So once the power cord is overloaded, it can easily cause a fire. Three. Violation of the rules for the use of electrical appliances Quite a lot of household appliance fires are caused by the violation of safety regulations. Paralysis, negligence, and non-compliance with operating procedures are the biggest causes of fires. Some families buy home appliances do not read the instruction manual and pay attention to the warning, the wrong operation; some families use electric water heaters, electric irons, rice cookers and other heat source appliances, but unattended, electrical appliances close to flammable materials. Fourth, the poor quality of electrical appliances or lack of awareness of safe use of electricity in the choice of household appliances, ignoring the quality of electrical appliances, the use of counterfeit and shoddy electrical products. Electrical appliances distribution control system has a low level of protection, poor reliability, and cannot effectively protect the electrical safety of electrical equipment. When a short circuit or overload occurs, it cannot be automatically protected, and there is always a risk of fire. Verb (abbreviation of verb) Improper use of electrical appliances Improper use of household appliances, such as water heaters, irons, rice cookers, etc. , or failing to unplug household appliances such as computers, televisions, stereos, etc. when using them. , resulting in the appliance itself remaining partially energized and storing heat for long periods of time leading to electrical malfunction. Prolonged heat storage can lead to electrical malfunction and fire.