Power supply surges in thundery weather.

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Power supply surges in thundery weather.

Postby kedaha » 2020-08-29 07:58

Just a curiosity but it's the first time I've seen this today but ...there I was reading the news when suddenly I heard a distant roll of thunder, the light flickered and my desktop computer went off. When I pressed the power button on, I was greeted with:
Power supply surges detected during the previous power on.
ASUS Anti-Surge was triggered to protect system from unstable power supply unit!
Press F1 to run SETUP

Just as well because although I have two multi-socket adapters behind my computer table, chance would have it that my computer wasn't plugged into the second "Anti-Surge" adapter, which would've afforded additional protection.
Someone I know had to replace the motherboard because of a power supply surge during a thunderstorm. I don't know much about electricity and had forgotten it could be an issue; nevertheless it's good to have "Anti-Surge" protection just in case. Now I know that mine works in the rare event of such a surge.
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Re: Power supply surges in thundery weather.

Postby CwF » 2020-08-29 13:47

Ground quality is often poor. Drive in a ground rod to wet earth and run a multimeter from it to your outlets ground - you might find some voltage! ...and that's bad, and common!
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Re: Power supply surges in thundery weather.

Postby Hallvor » 2020-08-30 10:30

Don't you have surge protection in your fuse boxes over there?
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Re: Power supply surges in thundery weather.

Postby kedaha » 2020-08-30 10:39

Hallvor wrote:Don't you have surge protection in your fuse boxes over there?

Probably most folks do but not where I live; the fusebox is probably about 40 years old. About time it was changed. And the plugs and sockets are only two-pins with no earth wire. Still in the Stone Age.
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Re: Power supply surges in thundery weather.

Postby CwF » 2020-08-30 12:11

Surge protection is not code in the USA, most breaker panels don't have it. Breakers don't trip on voltage.
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Re: Power supply surges in thundery weather.

Postby sgosnell » 2020-08-30 22:47

I haven't seen a fuse in a power box since I was a kid. Circuit breakers replaced fuses long ago. Having a surge protector of some sort in the breaker box would be nice, but I've never heard of one with it. I have surge protectors for the electronics, but nothing else. I try not to plug any electronics directly into the wall plugs, and use protected power strips for them.
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Re: Power supply surges in thundery weather.

Postby LE_746F6D617A7A69 » 2020-08-31 15:42

kedaha wrote:And the plugs and sockets are only two-pins with no earth wire. Still in the Stone Age.
So You have TN-C type power network - but it can be easily "reconfigured" into a more safe TN-C-S topology, with "simulated" grounding:
https://www.lsp-international.com/power-supply-system/

The best surge protection devices are those specifically designed for use in main fuse boxes - they are several times more durable and efficient in filtering power spikes. Even the cheapest models can easily withstand 25..40 (typically over 100) *Kilo* Ampers and assuring reaction times well below 1 microsecond, while those used in typical wall outlet multipliers have just few kAmps and usually undefined reaction time.
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