It’s a very old belief: thunderstorms can be dangerous for our electrical devices. So should we unplug them or not?
Electronic devices and lightning are generally not a good mix. While our devices generally require electricity to function properly, this electricity is generally regulated and controlled. There are specific standards to ensure that our electrical devices do not trip or start a fire.
But what would happen if lightning struck while our devices, especially our smartphone, were plugged into an outlet? If a storm were to strike above your home, there is always a risk that the electricity generated by the lightning could create a surge in your devices and seriously damage their components. Several experts and safety departments have looked into the dangers of lightning to find out whether you should unplug your devices during a storm or not.
The short answer is: prevention is better than cure. According to ENGIE experts, the level of danger of thunderstorms on electrical devices depends mainly on your location and the age of your electrical network. In the countryside and in the mountains, the risks are generally higher since the number of metal structures is greater. There are also more overhead power lines built to deliver energy to your entire community. Large cities are less at risk because many lightning rods are often installed there.
ENGIE therefore recommends unplugging the most complex electrical devices during a storm. This may concern your computers, your television, your internet box, your home automation devices and all equipment that has a microprocessor. The French fire brigade also advises not to use your phone, especially for calls, outdoors. It is also recommended to avoid recharging your phone during a storm, especially if you live in the countryside.
On the other hand, it is strongly advised not to touch your circuit breaker. This equipment is specially designed as a safety device that is triggered to cut off your electrical network in the event of a power surge or other problem detected. It therefore acts as a protection for you and your electronic devices.