One possible solution I am contemplating is to get a standard copper bus bar and put two holes in it. One (1/2 inch) to attach the bonding cable end and a bigger hole for the keel bolt. I have plenty of room above the nut to accommodate a ¼ inch copper bar under the nut.
From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Frederick G Street via CnC-List Sent: Sunday, July 13, 2014 10:35 AM To: Frederick G Street; cnc-list@cnc-list.com Subject: Re: Stus-List bonding strap question Actually, theres a reason to NOT use braid; from the ABYC bonding standard: The common bonding conductor shall be uninsulated copper or bronze strip, copper tubing, bare tinned-copper wire or insulated copper wire of the proper gauge. Copper braid shall not be used for this purpose. (a) Common Bonding conductors fabricated from copper or bronze strip shall have a minimum thickness of 1/32 inch and be no less than 1/2 inch in width. (b) Wire, where used as the common bonding conductor, shall be at least no. 8 AWG. Note: These requirements are based on both physical strength and the ability to make alld maintain low-resistance connections, as well as current ratings. So 8AWG would be okay for bonding; UNLESS its part of a lightning protection system. Then 4AWG is recommended. Fred Street -- Minneapolis S/V Oceanis (1979 C&C Landfall 38) -- Bayfield, WI On Jul 13, 2014, at 8:59 AM, Frederick G Street via CnC-List <cnc-list@cnc-list.com> wrote: Skip theres no reason to use braid over the usual insulated large-gauge stranded cable. Ive got all crimp terminals from 8AWG to 4/0, in terminal sizes from #10 to 3/8, as well as the proper compound crimper needed to do those large lugs; if youd like, I could do up a heavy grounding wire for you. 4AWG green cable should be okay for the mast; I may actually have some of that around, depending on the length you need. And for the engine, if its just bonding (NOT the main DC system ground), 4AWG should be okay there, too. If you need a main DC ground, Id probably go bigger than 4AWG; maybe 2/0 to account for engine cranking current. Fred Street -- Minneapolis S/V Oceanis (1979 C&C Landfall 38) -- Bayfield, WI On Jul 13, 2014, at 7:52 AM, Burt Stratton via CnC-List <cnc-list@cnc-list.com> wrote: I am in need of a bonding conductor for both my engine block and mast. Engine block strap is corroded to the point of dust. Mast strap is missing. The boat contains braided tinned copper straps with nice big ring ends to fit over the keel bolts. I have been able to find braided flat straps but no termination hardware. Does anyone here have experience with that? I have lots of experience terminating standard stranded wire but never braided straps. Is there a source for purchasing pre-terminated straps of varying length? Skip 1974 C&C 33 ¾ ton Portsmouth, RI
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