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Showing results 1 to 9 of 9
Search took 0.00 seconds. Search: Posts Made By: TreblePlink
Forum: Multihull Sailboats 04-11-2017, 05:38
Replies: 106
Views: 22,021
Posted By TreblePlink
Re: Lightning protection for you boat

Sorry, I was speaking of my boat. In the case of a cat, gotta have submerged metal. I have seen wooden hull boats that have sheet copper applied to their hull for worm protection. Lightweight and...
Forum: Multihull Sailboats 03-11-2017, 14:27
Replies: 106
Views: 22,021
Posted By TreblePlink
Re: Lightning protection for you boat

In-mast radio and light cables are unavoidable, and by themselves will conduct strike energy to your radio and DC systems. This is not the preferred current path.

If I had a semiconducting carbon...
Forum: Multihull Sailboats 02-11-2017, 10:50
Replies: 106
Views: 22,021
Posted By TreblePlink
Re: Lightning protection for you boat

Also remember that in-mast wires for antennas and lighting mean that it's pretty much impossible for your mast to be non-conductive.

The main premise of lightning protection is not strike...
Forum: Multihull Sailboats 02-11-2017, 06:54
Replies: 106
Views: 22,021
Posted By TreblePlink
Re: Lightning protection for you boat

Absolutely. There is no question that the lower resistance, the better. Metal hulls probably approach this ...
Forum: Multihull Sailboats 02-11-2017, 06:00
Replies: 106
Views: 22,021
Posted By TreblePlink
Re: Lightning protection for you boat

< 10 ohms - It's not the wire that is the limiting factor; it's the amount of conductor surface area in contact with non-current saturated seawater.
Forum: Multihull Sailboats 01-11-2017, 16:04
Replies: 106
Views: 22,021
Posted By TreblePlink
Re: Lightning protection for you boat

I wonder what the charge is for the DDCE "annual inspection" ?

I suspect these devices may be no better than many other lightning protection systems, except that the very high prices subsidize...
Forum: Multihull Sailboats 01-11-2017, 06:07
Replies: 106
Views: 22,021
Posted By TreblePlink
Re: Lightning protection for you boat

Perhaps if one can achieve the < 10 ohm "ground" connection, all forms of mast top electrodes would work pretty well ...

Actually measuring this would require another nearby "ground" connection...
Forum: Multihull Sailboats 31-10-2017, 09:00
Replies: 106
Views: 22,021
Posted By TreblePlink
Re: Lightning protection for you boat

A properly designed Faraday cage will work - but is rarely necessary. Portable devices are well protected if they have no wires connected (like charging cables, etc) and are stored in an insulated...
Forum: Multihull Sailboats 31-10-2017, 08:32
Replies: 106
Views: 22,021
Posted By TreblePlink
Re: Lightning protection for you boat

I'm not convinced this is true - for the same mast height. The cited data is based upon insurance claims - boats that are damaged.

Mono hulls typically have submerged grounding electrodes - lead...
Showing results 1 to 9 of 9

 
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