Netizen computer socket line switch is turned off or is struck by lightning

Some netizens have turned off the switch on the computer's socket cable, but they are still struck by lightning. In this regard, relevant experts pointed out that if the computer is not equipped with lightning arresters on the power cord and telephone line, unplug the power cord and telephone line during lightning. Note: It is unplugged but not turned off! When lightning strikes, it is generally a voltage of hundreds of thousands of volts, which can directly break through the power switch of the computer! Shutdown is useless, and it is useless to install a lightning rod on the roof. It is understood that lightning protection is mainly divided into two aspects: external lightning protection and internal lightning protection. External lightning protection refers to the lightning protection of the building body. The main measure is to install lightning arresters (lightning rods, belts, nets, wires, metal components, etc.) to prevent damage to the building body caused by lightning strikes on the building. However, if the lightning strikes a distant power line or telephone line, the lightning current will enter the room along the line. At this time, the external lightning protection device has no effect, so an internal lightning protection device is also required. The internal lightning protection device mainly refers to shielding, grounding, equipotential bonding, reasonable wiring and installation of lightning arresters. Its role is to discharge the lightning current entering along the line to the ground to protect the following equipment.
Experts suggest that families with conditions can consider installing TV feeder lightning arresters, power arresters, telephone arresters, etc. The role of the arresters is to shunt and limit the lightning electromagnetic pulses invading from the line, so as to achieve Safety.
Of course, if these devices are not available or installed for the time being, unplugging them is still the best emergency measure.

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Dec. 09, 2019