1, electrical cable aging, leakage phenomenon.
2, electrical equipment aging arc, electric spark phenomenon.
3, the aging of the electrical equipment power supply device, a short circuit, the release of high heat, causing high temperature.
4, electrical equipment in the electric apparatus, hot surface temperature accumulation.
5, electrical equipment subjected to lightning or static electricity buildup resulting in fire.
5, electrical equipment aging, overloaded operation, wire overload work, high temperature accumulation.
6, electrical equipment joints, interface connections with excessive contact resistance, heat accumulation.
Prevention of electrical fires:
1, regular or irregular inspection of the line, found that the problem is handled in a timely manner.
2, design and installation of electrical equipment, wire or cable insulation strength should not be less than the rated voltage.
3, engineering and construction process to avoid scratching, damage to the cable.
4, the connector interface should be wrapped with insulating tape, there can be no false connection.
5, regular testing of fuses, fuses.
6, electrical equipment contacts to be regularly tested, can not be stacked near the flammable.
7, the use of electrical equipment to be manned.