Matronics Email Lists Forum Index Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
 
 Get Email Distribution Too!Get Email Distribution Too!    FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Gerdes vs ACS key switch wiring

 
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> AeroElectric-List
View previous topic :: View next topic  
Author Message
supik



Joined: 22 Aug 2018
Posts: 70

PostPosted: Sat Jun 13, 2020 7:00 am    Post subject: Gerdes vs ACS key switch wiring Reply with quote

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


- The Matronics AeroElectric-List Email Forum -
 

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:

http://www.matronics.com/Navigator?AeroElectric-List

_________________
Igor

RV10 in progress
Back to top
View user's profile Send private message
nuckolls.bob(at)aeroelect
Guest





PostPosted: Sat Jun 13, 2020 7:48 am    Post subject: Gerdes vs ACS key switch wiring Reply with quote

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 . . .


- The Matronics AeroElectric-List Email Forum -
 

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:

http://www.matronics.com/Navigator?AeroElectric-List
Back to top
supik



Joined: 22 Aug 2018
Posts: 70

PostPosted: Sun Jun 14, 2020 3:02 am    Post subject: Re: Gerdes vs ACS key switch wiring Reply with quote

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!


- The Matronics AeroElectric-List Email Forum -
 

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:

http://www.matronics.com/Navigator?AeroElectric-List

_________________
Igor

RV10 in progress
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> AeroElectric-List All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group