1 caused by negligence for careless use of fire, such as smoking. Cigarette butt disposal is not the burned waste, no supervision. To cook food, and a lack of careful Using the wrong size fuse on powerWhen a short circuit or an overload fuse is intact, but it would cause more heat in the wires to insulated sheathed wire melting flames. There are many heating wires, the flames send heat to the material as fuel, it will cause the flames to spread sexually. To overload a single use case breast jacks using several electrical accessories simultaneously, causing the pole to heat the power cord or the socket is not suitable for electrical equipment. Use the power cord that is more resistant to heat and the flames in the insulation cover and contact to spread what is nearby. It also includes the use of defective electrical equipment. The electrical wiring not investigated Cause of high resistance to electric current flowing through the great potential of heat and flames coming up. As well as using non-standard electrical equipment, etc.