SailNet Community - View Single Post - Grounding, bonding,AC, DC
View Single Post
post #2 of Old 07-10-2012
Senior Pirate
TropicCat's Avatar
Join Date: Oct 2008
Location: Cape Canaveral, FL
Posts: 2,656
Thanks: 5
Thanked 15 Times in 15 Posts
Rep Power: 9
Re: Grounding, bonding,AC, DC

Wow, opinions vary on this subject. Let me begin by saying that I have been struck by lightning while underway and although electric/electronics were toasted crispy, hull integrity was fine.

Chainplates should be grounded although in point of fact an aluminum mast is the preferred down conductor, being a much better conductor than stainless steel stays. This is the path lightning will try and take and this is where boat lightning protection should be.

Recent information from the lightning capital of the USA. University of Florida

"......If the mast base is on top of the cabin, a downconductor is needed to connect the mast base to the ground strips. Use at least #4 gauge copper with preferably bimetallic copper/stainless connections to prevent galvanic corrosion.

Alternatively, make a strong mechanical connection and additionally braze or solder, to improve the electrical contact and lessen the chance of contact corrosion, then paint with an insulating coating. A keel-stepped mast similarly needs to be connected to the keelbolts with at least #4 gauge copper...."

Tropic Cat

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by TropicCat; 07-10-2012 at 10:28 AM.
TropicCat is offline  
Quote Share with Facebook
For the best viewing experience please update your browser to Google Chrome