logo elektroda
logo elektroda
X
logo elektroda
Advanced Search
logo elektroda

Does the safety shutdown effectively protect against lightning?

ama1 26442 11
ADVERTISEMENT
Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
| New topic
  • #1 6811004
    ama1
    Level 10  
    Good Evening

    Some time during a thunderstorm, a couple of appliances burned down. Since then, I disconnect all electrical devices from the grid during storms. Since there are a lot of devices indoors and the storms have increased significantly for some time, I am wondering whether turning off the plugs at the electricity meter (instead of physically disconnecting each electrical device. from the grid) will be effective protection in the event of a possible lightning strike?

    Thanks in advance for my question.
  • ADVERTISEMENT
  • #2 6811038
    qwerty67
    Level 24  
    Lightning is usually a million to a few volts, and the distance in your "plugs" is a few mm and air est able to insulate probably 15 kV at 10 cm so think if lightning does not jump :D With the rest it was already somewhere that this is not effective enough.
  • #3 6811044
    blue_17
    Level 32  
    No because lightning can jump several centimeters even the extinction chamber in overcurrent circuit breakers does not give 100% certainty. Also, when lightning strikes there is an electromagnetic pulse can damage the device

    I do not know anyone who keeps devices in a Faraday cage at home :D .
  • ADVERTISEMENT
  • #4 6811061
    waldekg
    Level 28  
    Hi. In my humble opinion, it is a certain security, but it does not give an absolute guarantee of protection of the equipment. There are specialists on this forum who have already spoken on this topic, so I invite you to read. Regards.
  • #5 6811062
    niutat
    Level 36  
    As the predecessors wrote, an effective way will not be, it can only increase the chances.
  • ADVERTISEMENT
  • #6 6811063
    adamjur1
    Level 41  
    Ew. after disconnecting the "plugs" ( whatever you mean by that) ground the side of the disconnected installation.....:idea: :idea: :idea: Commendation.
  • #7 6811086
    qwerty67
    Level 24  
    As someone wrote above, even a B+C surge protector does not give 100% certainty, which I forgot to write about in the first post.
  • #8 6811103
    luk9753
    Level 24  
    Lightning is an electrical discharge by ionized gas, so the removal of "plugs" is completely ineffective. Because if the lightning has enough energy to ionize the gas between the chumure and the ground, then surely it has enough energy to jump the gap between the contacts. It is assumed that above 10Kv 1cm insulates 1kV. Protection against lightning is tgz Waristors. In order to protect yourself completely, it is necessary to meet 3 steps. Lightning protection of the line (usually on the transformer), then in the meter box and then in the main switchboard of the building. Such gradation allows to absorb the energy of lightning and protect devices connected to the electrical system.
  • ADVERTISEMENT
  • #9 6811113
    Akrzy74
    Rest in Peace  
    ama1 wrote:
    Quote:
    will turning off the plugs at the electricity meter (rather than physically disconnecting each electrical device from the grid) be an effective protection in the event of a lightning strike?

    The short answer-as specific as the question is- NO .
    Further polemic is unnecessary...

    Ps. There is a question (anecdote)-What color is a crow? Answer: the crow has the color black.
    If someone writes: the crow has the color black- because.... Then the moderator enters into action :| .
  • #10 6811199
    niutat
    Level 36  
    luk9753 wrote:
    Lightning is an electrical discharge by ionized gas, so twisting the ,,plugs" is completely ineffective. Because if the lightning has enough energy to ionize the gas between the chumure and the ground, it certainly has enough energy to jump the gap between the contacts. It is assumed that above 10Kv 1cm insulates 1kV. Protection against lightning is tgz Waristors. In order to protect yourself completely, it is necessary to meet 3 steps. Lightning protection of the line (usually on the transformer), then in the meter box and then in the main switchboard of the building. Such a gradation allows to absorb the energy of lightning and protect devices connected to the electrical system.

    No not really, lightning rarely strikes directly on the fuse so you can not make such comparisons. In most cases of lightning strikes directly into the network, the voltage reaching several kV enters the installation, and against such a voltage in some cases disconnecting the fuse can protect.
  • #11 6811305
    ama1
    Level 10  
    Thank you for the information, that is, well I will continue to remain with physical disconnection of devices. I conclude that the same situation is with devices connected to a surge strip; i.e. during a storm it is better to physically disconnect the strip from the mains, rather than just turning the strip off with a button....

    One more thing I'm curious about. As a guideline, it is known that when the difference between the flash and the thunder is 3 seconds, the impact occurred about 1km away. Is it a good solution to turn off the devices when the difference between flash and thunder is between 3-6 seconds? or is it better to turn off already with a larger flash-thunder difference

    Greetings.
  • #12 6811363
    niutat
    Level 36  
    ama1 wrote:

    One other thing I'm curious about. Indicatively, it is known that when the difference between flash and thunder is 3 seconds, the impact occurred at a distance of about 1km away. Is turning off devices when the difference between flash and thunder is between 3-6 seconds a good solution? or is it better to turn off already when the difference between flash and thunder is greater

    Greetings

    There is no rule for this, of course, the earlier the better, but it may happen that from a thunderstorm several kilometers away lightning will suddenly strike in close proximity. In addition, power lines can carry such strokes over considerable distances.

    Regulation p. 14>close.
    [Acres]     .
| New topic
Report a violation of the law

Topic summary

The discussion centers on the effectiveness of safety shutdowns in protecting electrical devices from lightning strikes. Users express skepticism about the efficacy of simply turning off plugs at the electricity meter, noting that lightning can jump significant distances and that electromagnetic pulses can damage devices even when disconnected. Experts suggest that while disconnecting devices may increase safety, it does not guarantee protection. Comprehensive lightning protection requires multiple layers, including surge protectors and proper grounding. The consensus is that physical disconnection of devices remains the safest option during storms, and users are advised to act quickly when they perceive lightning activity nearby.
Summary generated by the language model.
ADVERTISEMENT