Fred,
I really don't understand ABYC's position on this, unless they are
referring to non plated copper. We used silver plated copper braid in
the Aerospace and Defense industry most of the time for lightning and
ground bonding. Any aircraft you ever fly on has it's electrical users
bonded with braided copper. As long as you have plating and the
circular mils, I don't understand the issue.
Neil Schiller
1970 Redwing 35, Hull #7
(C&C 35, Mark I)
"Corsair"
On 3/14/2016 5:45 PM, Frederick G Street via CnC-List wrote:
Mike — ABYC E-11 (AC and DC Electrical Systems) has this to say about
grounding:
11.18.2.5.2.2.Copper braid shall not be used.
11.18.2.6.Combined DC Grounding and Bonding Systems – The DC grounding
conductors may be combined with the following systems providing all
the requirements with respect to conductor size are met for each system.
It then goes on to list Lightning Protection, Cathodic Bonding and
Static Electricity Grounding. So yes, you CAN connect all of the
grounding/bonding systems on a boat.
Lightning systems require the equivalent of #6AWG wire for everything
but the main download; that needs to be #4AWG or equivalent, but for
our boats the mast provides the downlead (and far exceeds #4AWG).
Fred Street -- Minneapolis
S/V Oceanis (1979 C&C Landfall 38) -- on the hard in Bayfield, WI :^(
On Mar 14, 2016, at 3:45 PM, Josh Muckley via CnC-List
<cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com>> wrote:
Yes the braid is what we're talking about with regards to the
lightning protection. It is not uncommon for this braid to corrode
away. As I understand it you leave it uninsulated so that during a
lightning strike the insulation doesn't have a chance to burn off and
possibly start a fire. That's why using the cooper bar stock is
appropriate. I've also seen copper plumbing pipe bent in a tubing
bender and flattened on the ends. Drill holes in the flat parts to
bolt it ad needed. Again as straight of a shot as possible is preferred.
The lightning protection should be separated from the DC ground
system and galvanic protection system. See my previous link for
clarification.
Josh Muckley
S/V Sea Hawk
1989 C&C 37+
Solomons, MD
On Mar 14, 2016 10:09 AM, "Hoyt, Mike via CnC-List"
<cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com>> wrote:
Further to this topic.
Our grounding wire is a braided copper strip approx. 3/8 inch
wide and flat. A section has corroded and is no longer attached
and that section needs to be replaced. Is this the same thing we
are already discussing? Han I purchase o new section of this
wire in the suitable length and splice it somehow?
Mike
Persistence
1987 Frers 33
Halifax, NS
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