The "Tracking Phenomenon" will cause a fire!?! I have previously introduced that "contamination-caused conduction" may cause a fire. Have you heard of the "Tracking Phenomenon?" It is said that this may also cause electrical disasters! A professor Jinyuan in Japan found that organic insulators such as rubber and wood between the two poles of the plug were originally poor conductors. When the electric current passed through a long period of time to generate high heat and was affected by electrical sparks, carbon traces were generated between the poles and continued to produce Joule heat, forming more conductive graphite. Large-scale heating may eventually cause a short circuit and cause a fire. The insulation of this insulator is damaged, and the phenomenon of current flow is called the the "Tracking Phenomenon," also known as the "graphitization phenomenon." Therefore, you should always check the condition of the wires, plugs, and sockets, and pay attention to whether they are hot or have an odor. Avoid using excessively old or damaged extension wires or electrical wires. When using the wires, be careful not to bind them, as it may cause difficulty in heat circulation, increase the temperature, melt the insulation coating, and cause electrical fire.

※ the picture from TPC Fan Page