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Avionics Grounding Bus vs Tabs

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email(at)jaredyates.com
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Posted: Wed Mar 02, 2011 7:41 am Post subject: Avionics Grounding Bus vs Tabs

Is there an electrical benefit to using the D-sub avionics ground bus and 5 wires, beyond the mechanical convenience of saving tabs, and/or dealing with a situation where there is a long distance from the panel to the forest of tabs?  I have about 24" between the front of the panel and the firewall, and plenty of tabs.  Sorry if this is old news, but I couldn't find it in the archives or AEC.

 



  [quote][b]

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nuckolls.bob(at)aeroelect
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Posted: Wed Mar 02, 2011 8:00 am Post subject: Avionics Grounding Bus vs Tabs

At 10:37 AM 3/2/2011, you wrote:

 	  Quote: 	
		  Is there an electrical benefit to using the D-sub avionics ground 

bus and 5 wires, beyond the mechanical convenience of saving tabs, 

and/or dealing with a situation where there is a long distance from 

the panel to the forest of tabs?  I have about 24" between the front 

of the panel and the firewall, and plenty of tabs.


	


    Then use the firewall tabs.  The panel ground is intended for

    a convenience of consolidation of lots of wires on the panel.

    Things like shield grounds on the panel should STILL consolidate

    at or near the system that benefits from shields . . . audio

    amps are typical devices. But given short runs for power grounds

    and relatively low numbers, the panel ground bus offers no

   advantages.



   Bob . . .

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