Next message: Harris McFerrin: "lv-ab: A/C water circulation"
Does lightning current travel _through_ a conductor or mostly on its surface? Anyway, if I understand the (very large) energy involved, it seems inevitable that it will always seek multiple paths.
Rufus
> ----- Original Message -----
> From: "Norm of Bandersnatch" <>
> To: TWL2 <>
> Subject: RE: (T&T: & TWL2:) Re: lv-ab: lighting protection question
> Date: Sun, 13 May 2007 12:06:01 -0400
>
>
>
>
> Ahoy All,
>
> I think this is a good thread to pursue.
>
> It seems obvious that it would be best to give lightening a easy path to
> ground (or up from ground ) so as to minimize its energy wandering around
> your boat doing damage and letting the magic smoke out.
>
> Without the eyebolt, or something like that, the lightening will find a way
> to get to the water via other, probably more fragile, paths. We should
> facilitate that desire to prevent damage (as in a blown thruhull and a
> resultant 1 1/2" stream of water coming into the boat).
>
> What would be the best way? It should be easy, effective, and require
> minimal maintenance.
>
>
> My first thought would be a large carriage bolt, say one inch or larger,
> with the head outside, situated more-or-less under the mast(s). I am
> partial to 316 but bronze would be good too. The same under where the
> shrouds and stays terminate would be good too. Connect with large wires.
> Bronze or copper wires would be best I think, but stainless might work
> almost as well and be more resistant to corrosion (read: maintenance).
>
> What are your thoughts?
>
=
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