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Grounding shielded wire 1/4 from one side?

 
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nuckolls.bob(at)aeroelect
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PostPosted: Fri Oct 23, 2020 2:30 pm    Post subject: Grounding shielded wire 1/4 from one side? Reply with quote

At 01:18 PM 10/22/2020, you wrote:
Quote:
--> AeroElectric-List message posted by: "rparigoris" <rparigor(at)hotmail.com>

Hi Group I have a question about running a shielded wire to ground. On my Rotax 914 it has 2 shielded wires going from the Ducati ignition modules to the ignition ACS switch. The shield is connected to the ignition switch and is used to ground the Ducati ignition modules. Where the shielded wires go into the ignition connectors things get pretty tight and need to make sharp bends for several inches. The 2 shielded wires run right by my FWF ground field of tabs about 1/4 the total length from the ignition modules. Is there anything wrong with carefully removing the insulation on the shielded wires, wrapping ground wire to shield and carefully soldering then connect to field of tabs?:
[url=https://1drv.ms/u/s!Ah1S270Nwg9V3VSqwoGL7YgsYS7Z?e=EsKSit] https://1drv.ms/u/s!Ah1S270Nwg9V3VSqwoGL7YgsYS7Z?e=EsKSit[/url]

What you proposed is probably fine . . .

Ground shields to airframe in only one
place (forest of tabs) using your
proposed 'tap'. Use shields to SUPPLY
ground at ignition switch.

See attached . . .

Of course the assumed condition is that
there exists a FAT wire jumper from engine
crankcase to FWL stud.





Bob . . .


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rparigoris



Joined: 24 Nov 2009
Posts: 780

PostPosted: Fri Oct 23, 2020 3:35 pm    Post subject: Re: Grounding shielded wire 1/4 from one side? Reply with quote

Hi Bob

Thank you for reply. I have a #4 fat wire running from field of tab main negative 3/8" Brass bolt pass-through FW to the starter nub on my Rotax 914. Ron P.


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