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    Re: A DIY Faraday cage: caveats and hints?
    From: Damian Lopez
    Date: 2019 Jan 24, 18:09 +0000
    If the outriggers were made out of metal, I'd say you had an improvised yet effective lightning protection system.  Anything low and close to those riggers would be protected, as lightning discharges would always prefer the much easier path you'd given them. That's what it boils down to - give lightning an easy path to ground or water away from people and equipment.

    Whether you want to ground the ammo box or not, that's not an easy question. I'd say no, to keep it a more difficult path for lightning. If it still gets hit, electrical current will flow around the outside surface of the box bit not inside.

    Damian


    On Wed, 23 Jan 2019 at 11:18 PM, Mark Coady
    <NoReply_MarkCoady@fer3.com> wrote:

    I am curious for comments on an experience relating to the answers recieved on the cage.

    I sat at the Boston museum of science decades ago watching a man sit in the equivalent of a large birdcage right in the path of their monster Vandegraph generator.

    Even leaning on the bars inside the cage, he was unharmed by the bolts of substantial length grounding to the cage. They were frightening enough.

    Of course it's not lightning....but I was impressed by the effectiveness of even a wire cage.

    How a human body relates to sensitive electronics I do not know. I was just wondering if storing in a grounded box would suffice for all but a full on wack.  A waterproof ammo box with a few mods to ground lid and box and ship?

    Just asking not claiming to know.

    We used to carry big copper cables and clamps for fishing outriggers on a fiberglass hull. If you got into a storm you clamped the cables to the riggers and dumped the other end in the ocean...with a hefty copper plate. They should be grounded anyway...but often are not. Idea was take everything you could straight into the sea outside the vessel. hopefully went there and not through the hull  or engines....

    A crackpot theory or good idea....mmmm..idk...made sense at least superficially. Doesn't look much different than many commercial lightning systems I've seen that look like just pointy sticks and cable.

       
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