What's with the spark when you press the plug-in switch?
Because the switch contacts are unreliable at the moment when the switch is closed, sparks will be generated when a relatively large current flows. If you are afraid of striking a fire, turn off all the appliances and plug them in. So it won't strike a light.
Shopping guide:
First, anti-electric shock plug-in
It has the international leading patent technology of safety and electric shock prevention, which can be inserted into a single hole at will without electric shock and is safer to use; The power-off mechanism adopts silver alloy contact, which is safe and reliable and has excellent conductivity; Recoverable overload protection device can effectively protect the use of electrical appliances.
Second, lightning protection plug-in
Lightning rods can only prevent direct lightning and protect buildings. It will also release a large number of induction mines when fighting against direct lightning. The induced lightning released by the lightning rod will invade the interior of the electrical appliance along the antenna, feeder, signal line and power line in an instant, which will bring great harm to the electrical appliance. Therefore, it is not enough to rely on lightning rods for lightning protection, and a three-level lightning protection system must be added.
Three-level lightning protection system refers to the lightning protection system of buildings, power supply lightning protection box in floors and indoor lightning protection sockets. Others are used to turning off the TV, computer, etc. At the beginning of lightning, I thought it would ensure safety.
In fact, this method can't protect security. Because of the high sensitivity of VLSI such as computers, even if lightning protection devices are installed in buildings with computer facilities, electromagnetic induction and electrostatic induction generated by lightning strike will still form high-voltage shock waves and damage electronic equipment.
The thunderstorm is coming, so it's better not to use the computer. Just turning off the power supply of electrical appliances can't prevent lightning strike, because the ground wire is connected, and the strong current generated by lightning strike will eventually be transmitted to the underground through wires and electrical appliances, so there will still be current passing through just turning off the power supply of electrical appliances.
Therefore, simply turning off the power supply cannot guarantee complete safety. Only by unplugging the electrical appliance and completely exiting the circuit can safety be guaranteed. In addition, in the case of work or many situations where the power supply cannot be turned off, we must choose a lightning-proof socket that can withstand large current to ensure the safety of electricity use.