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Gerdes vs ACS key switch wiring

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supik

Joined: 22 Aug 2018
Posts: 70

Posted: Sat Jun 13, 2020 7:00 am Post subject: Gerdes vs ACS key switch wiring

I have the ACS 502 key switch and was wondering how to wire the center ground.



B&C instructions for the GERDES key switch say DO NOT connect the center GND to any structural member in the cabin wheres the ACS instructions tell the opposite. 



ACS Note C: 

http://acsproducts.co/wp-content/uploads/2013/10/Wiring-Diagram.jpg



GERDES:

https://bandc.com/wp-content/uploads/2019/03/s811-1_contactor_501-3_fig4.pdf

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Igor

RV10 in progress

nuckolls.bob(at)aeroelect
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Posted: Sat Jun 13, 2020 7:48 am Post subject: Gerdes vs ACS key switch wiring

At 10:00 AM 6/13/2020, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: "supik" <bionicad(at)hotmail.com>



 I have the ACS 502 key switch and was wondering how to wire the center ground.



 B&C instructions for the GERDES key switch say DO NOT connect the center GND to any structural member in the cabin wheres the ACS instructions tell the opposite. 



 ACS Note C: 

  http://acsproducts.co/wp-content/uploads/2013/10/Wiring-Diagram.jpg 



 GERDES:

  https://bandc.com/wp-content/uploads/2019/03/s811-1_contactor_501-3_fig4.pdf 	


   There is no BENEFIT for connecting to ground locally . . .

   but there is RISK for damaging p-lead shields due to

   starter currents flowing in a ground-loop situation.

   Wire per examples in the z-figures where shields are

   terminated at the mags and NO grounds are added at

   the switch(es) whether a o-l-r-b-s keyswitch or

   toggles.



 

 

   Bob . . .

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supik

Joined: 22 Aug 2018
Posts: 70

Posted: Sun Jun 14, 2020 3:02 am Post subject: Re: Gerdes vs ACS key switch wiring

 	  nuckolls.bob(at)aeroelect wrote: 	
		  At 10:00 AM 6/13/2020, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: "supik" <bionicad>



 I have the ACS 502 key switch and was wondering how to wire the center ground.



 B&C instructions for the GERDES key switch say DO NOT connect the center GND to any structural member in the cabin wheres the ACS instructions tell the opposite. 



 ACS Note C: 

  http://acsproducts.co/wp-content/uploads/2013/10/Wiring-Diagram.jpg 



 GERDES:

  https://bandc.com/wp-content/uploads/2019/03/s811-1_contactor_501-3_fig4.pdf 	


   There is no BENEFIT for connecting to ground locally . . .

   but there is RISK for damaging p-lead shields due to

   starter currents flowing in a ground-loop situation.

   Wire per examples in the z-figures where shields are

   terminated at the mags and NO grounds are added at

   the switch(es) whether a o-l-r-b-s keyswitch or

   toggles.



 

 

   Bob . . . 	




Thank you!

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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_________________
Igor

RV10 in progress

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