【 Weak current College 】 from fire statistics results of China's electricity safety level---Power By 【 China power house network 】

From electrical accidents and fires caused by the statistics known. Our electrical safety system has not been thoroughly penetrated into the base, some on electrical safety, work in dereliction of duty, and does not strictly follow the rules for using electricity for the operation of phenomena also occur from time to time, these are causing the root cause of electrical fires. As China's economy continues to grow, electricity consumption is also growing rapidly, therefore by electrical accidents caused by the fire, there is also a rising trend.
Most of the electric fire accidents are due to electrical equipment running artificially raised in violation of the rules of operation, for example forgot to disconnect the electrical power supply, the electric heaters on drying clothes, etc., these are not normative power lead to the typical cases of fire; the use of, the provisions do not conform to the manufacturing of electrical equipment and installations is another electric fire dangers, for example, incandescent (or other heat large light source) and electric heaters, etc. due to overheat and ignite combustibles; there are around a large part of the reason is because the wire overload, over current protection device characteristics of poor or shorted wire protection switch, fuse, caused a power circuit and grounding. Are you should pay attention to the electric fire hazard.

In sum, the electric fire causes and prevention has several noteworthy:

1. a public gathering areas most serious electrical fire hazards are electrical devices, circuit temperature is too high, on the one hand, in engineering design because there is no good off the wire selected is too small or too low temperatures cause lines, electrical lines of deficiency, spark or transformer grounding wire? contacts, power distribution, bus and cable tray, fuses, etc. are present because of poor people as the construction of the local temperature increases are fire hazards, the supervision and inspection in fire or electrical equipment during the test. For the helped thermal infrared imager and other testing equipment for thermal and heat, you can use ultrasonic detector to find electrical wiring, equipment received and brand impact of virtual phenomenon, and so on, you can use infrared devices such as a nod to measure specific parts of the body temperature.

2. construction and installation are not standardized, cause electrical equipment failure. The exposed wires, cables, connectors, the phenomenon is most common with lights, common mobile socket, power distribution unit Cabinet air conditioner, advertising lights, power cable connector exposed. Suspended ceiling, decorative wall cable shaft, counters, cabinets, concealed inside the outlet the power supply cable connector exposed also prevalent;

3. electrical equipment and fuel companies did not take effective measures. Increased risk of electrical fires, for example, some electrical device installed directly on the combustible components, or electrical equipment using flammable objects such as boxes, in everyday life, the most common is the air switch, leakage breaker, ballasts, lighting control switch, outlet directly installed on wooden boards, etc.;

4, electric line laying protective measures are not in place:

(1) ceiling-mounted parts electrical lines laid in the most serious problems. For example, a wooden ceiling luminaire wiring not wearing protective tube; downlead suspended ceiling or in the cable harness into ceiling-mounted luminaire does not take protective measures; ceiling luminaire wiring through pipe protection are not in place of phenomena occurred from time to time, and some have even wear hose wire but still have the exposed part or distribution extension protection tube are not introducing a junction box or apparatus;

(2) wire, cable in the wall, metal components, combustible components do not take protection measures, and some wires, cables, do not wear metal protection pipe laying in flammable decoration layer. Or wear wooden curtain walls, stairs, walls between the cable access distribution box wear steel pipe mouth did not do proper protection measures:

(3) indoor electrical line laying position. Electrical line laying position and heat source too close distance, such as: a flashlight (especially heat high lights) power cable attached to the heating pipe laying. Or power covered wire near the radiator, metal pipe laying, winding in metal tubes, etc.;

5, the mobile extension socket problems, especially, whether it is a public place or a family, mobile extension socket problems are quite many, many bad socket does not use qualified insulated and sheathed, mobile extension socket threaded wire using, power supply, you need to take the place of waterproof measures (such as restaurants, shops selling flower beds, washing machine, fish tanks, etc.) do not use waterproof mobile extension socket, etc.;

6, Terminal wire crimp is not normative. Air switches and breakers of terminals and neutral line bus terminals, the Terminal crimping multiple wire or stranded conductors without Terminal crimping, crimp terminals crimping weakly happens from time to time;

7, management measures are not in place. Warehouse stacked vertically below the luminaire combustibles; generator and fire boilers and other combustibles in a room with reset; distribution Cabinet stacked debris around; lighting and too close to combustibles distance around; cable ditch legacy are combustible debris, etc.;

8, a lot of fire power equipment, facilities and other reasons due to the construction itself exists to varying degrees of fire hazards. Design and calculation errors in the selection of fire power equipment or wires overheating or fire sporadically in fire inspection also often find fire distribution box Terminal temperature thermal or electrical equipment have been destroyed to no effect, as well as air switch shell burnt, wire connector outside insulation ageing, breaker crimp is corrosion causing bad, etc., such fire-fighting, fire protection circuit is not only in the fire to their roles. Instead become the cause of the fire should be attention to;

9, shaft, 7 ㈠ with not take fire blocking measures, tall buildings cable well in each floor office fire sealing has been made, the transformer naked bus and other electrical equipment through the fire wall cavity is not implemented, such as fire sealing makes the flame through shafts or other pathway yanran, resulting in greater loss.

You can say that. The safe use of electricity in China is still to be done. According to the fire department fire statistics. It is not difficult to see from electrical faults caused by the fire is on the rise. This requires in the manufacture of electrical equipment,Appliance or electrical installation, maintenance, you should strictly follow the rules for the construction operation, doing every procedure, every detail perfect. Fire hazard mostly because of violation of fire regulations and fire protection technology standards, and therefore to determine whether a safety factor not only pose a fire hazard in the fire chief on the laws and regulations, but also in fire protection technology standards have also been based on.

In daily life. And distribution and transformation in, high-voltage systems in contact with them are professionally trained and experienced professionals, due to the high-voltage thrown in, electrical accident frequency much lower than with the general population exposure to a wide range of low-voltage systems (AC220/380V). As a result. Low-voltage electrical installations for fire prevention measures in the electrical engineering design, construction and daily use and maintenance has become particularly important. People in a century of electricity, and gradually perfected on different voltage level of protection for low-voltage equipment of protected content are over current protection, ground fault protection, overvoltage and less voltage protection, earthing and equipotential bonding, insulated or quarantine measures and special places and special equipment for protection. These measures not only effectively protect the personal safety can also fire prevention electrical failure.