You can't use computers and watch TV at home in lightning weather. It is said that it can burn out electrical appliances, and there are many cases in which cats are burned out. What is the reason?

Lightning has both electrostatic damage and high voltage damage. The high voltage generated by intense atmospheric movement can be instantly discharged through the power line or antenna (mainly long line) of electrical equipment, resulting in internal breakdown (high voltage damage) or melting (power supply damage) of electronic components in electrical equipment, and finally causing permanent damage to electrical equipment. When it thunders, if it is unlucky, the wires will produce instantaneous high voltage. At this time, high voltage may break down electrical components. Serious explosion may occur, and even the safety tube may be slightly burned. Therefore, if the thunder is severe, sometimes even the electric light must be turned off, because it may suddenly light up and hurt people nearby. Of course, if the thunderstorm cloud is high, it will have no effect. Generally, the thunder sounds scary, and the clouds are very low, so be sure to turn it off!

Therefore, lightning discharges instantly, and the protection device has no time to react.