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--></style><title>Re: [Alberg30] Lightning
protection</title></head><body>
<blockquote type="cite" cite> </blockquote>
<div>the best info I've seen on lightning grounding is in Nigel
Calder's book, the current edition.It suggests that a flat plate with
lots of edge under the water provides the best grounding against
lightning. It also notes that lightning doesn't like to turn and that
any curve in the grounding should be no more than 90 degrees in 8
inches and a minimum of #6 guage. I very much doubt that the grounding
strip meets any of these criteria.</div>
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<blockquote type="cite" cite><font size="-1">A posting to this
mail group in 1999 suggested all Alberg 30's are lightning grounded by
virtue of the stainless strip running from the stemhead down to about
3 feet below the waterline. It connects to the forestay and
thereby providing a grounding from the masthead to the
water.</font></blockquote>
<blockquote type="cite" cite> </blockquote>
<blockquote type="cite" cite><font size="-1">Any comments as to
whether this should be sufficient and what alternatives there might
be.</font></blockquote>
<blockquote type="cite" cite> </blockquote>
<blockquote type="cite" cite> </blockquote>
<blockquote type="cite" cite><font size="-1">George and Kathy
White</font></blockquote>
<blockquote type="cite" cite><font size="-1">Close Harmony #
637</font></blockquote>
<blockquote type="cite" cite> </blockquote>
<blockquote type="cite" cite><font size="-1">email:</font> <a
href="mailto:salty@ns.sympatico.ca"><font
size="-1">salty@ns.sympatico.ca</font></a><font size="-1"><br>
Telephone: 902 893 1080</font></blockquote>
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<div>The gods do not deduct from man's allotted span the hours spent
in sailing. Anon<br>
www.georgianbaysailing.ca for interesting reading for sailors</div>
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