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Old 05-01-2014, 00:09   #1
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Grounding For A Lightning Strike

I can't seem to find the right info searching here on the forum so please forgive me if I'm using the incorrect search words.

I'm on the hard and just removed the Dynaplate from my hull forever.
My chainplates were grounded to a bolt on the Dynaplate with 6 or 8 awg cables for lightning protection, or at least an attempt for protection.

Unless someone can change my mind I will be using one of the 2 holes in my hull from the former Dynaplate installation for attaching the grounding wires using a Bronze bolt and nuts.

Should I just use large bronze washers on both sides of the hull in addition to sealant of course.
Or should there be some sort of blocking?

Thanks
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Old 05-01-2014, 05:00   #2
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Re: Grounding For A Lightning Strike

The major components of a lightning protection system for a boat are an air terminal, main conductor, and a ground plate.
A nut, bolt & washers will not provide an adequate ground connection (gnd plate).

See ABYC TE-4 “Lightning Protection”
http://www.marinesurveyorschool.org/...Protection.pdf

And “Lightning & Sailboats”
SGEB-17/SG071: Lightning & Sailboats
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