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EMP danger for "unplugged" electronics?

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EMP danger for "unplugged" electronics?

Postby james762 » Thu Apr 26, 2012 10:17 am

General over view of the dangers of EMP on any equipment that is unplugged?
TV's, radios, computers, battery disconnected on cars.....?
"All scripture is inspired by GOD and profitable for teaching, for reproof, for correction, and for training in righteousness, that the man of GOD may be complete, equipped for every good work" (2 Tim 3:16)
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Re: EMP danger for "unplugged" electronics?

Postby old_salt » Thu Apr 26, 2012 10:32 am

Here is a link for a site that explains EMP. My understanding is that unplugging, disconnecting power will not protect devices from EMP events. The site has links for faraday cages, which is the only sure protection.

http://unitedstatesaction.com/emp-terror.htm
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Re: EMP danger for "unplugged" electronics?

Postby Hucksdaddy » Thu Apr 26, 2012 10:52 am

Think of an EMP as like the force from a nuclear explosion, only it just affects electronics. It's not like a lightning strike that may come in through the outlet. It's a magnetic field that is in the air. Unplugging will not save them. Only a Faraday cage will.
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Re: EMP danger for "unplugged" electronics?

Postby Chilly Prepper » Thu Apr 26, 2012 10:55 am

I am in no way an expert but have read up and researched the information.
There is a big difference between protecting electronics from EMP’s versus lightning and power surges.
Unplugging a device will keep it from being fried in the event of a lightning strike.
ANY and all electronics not completely shielded from an EMP will be damaged to some extent.
I hate to use elementary explanations, but just to cover all the bases here it goes.
An EMP is just like light from the sun.
You can sit under a shade tree but you still see light. You can crawl into a sleeping bag under that shade tree but there is still light visible through the seams and zipper. Same thing with an EMP. A Faraday cage (if properly constructed) will conduct that Electromagnetic pulse around whatever is inside the cage rather than allowing it to go through it. An EMP travels in the same fashion as light. Through the atmosphere. Not through your home wiring system.
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Re: EMP danger for "unplugged" electronics?

Postby james762 » Thu Apr 26, 2012 11:30 am

So.....storing basic electronics in a metal "truck crossover box" will probably shield simple electronics? Does the metal box need to be grounded to a ground rod?
"All scripture is inspired by GOD and profitable for teaching, for reproof, for correction, and for training in righteousness, that the man of GOD may be complete, equipped for every good work" (2 Tim 3:16)
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Re: EMP danger for "unplugged" electronics?

Postby Hucksdaddy » Thu Apr 26, 2012 11:49 am

A true Faraday gage will be grounded. For complete protection, you will need to ground it. Will an ungrounded metal truck box provide protection? Yes. Will it be enough protection? Probably not, especially if you are close to ground zero.
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Re: EMP danger for "unplugged" electronics?

Postby old_salt » Thu Apr 26, 2012 12:03 pm

If you are using a metal truck box, it will need to be grounded, assuming the truck is grounded. You will need to line the interior, with some kind of insulating material. Check link above.
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