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Proper Grounding?

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bk(at)bradkunkel.com
Guest

Posted: Wed Dec 20, 2023 10:55 am Post subject: Proper Grounding?

When I was wiring up a Trio autopilot on my kit, I noticed that the ground wire was already grounded by checking for continuity with an ohm meter.  It appears to be grounded through the metal case of the unit to the panel.  Is that okay?  Should I hook up the ground wire anyway?  It seems that could draw unwanted current through the unit.

 

Also, when I was wiring up the control cable to the servo, I noticed that the shield was grounded at both ends.  Originally, I thought that was the cause of the case grounding above so I snipped it at the autopilot end.  Is that okay or should I reconnect it?

 

Thanks

Brad Kunkel

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mike_tailwind

Joined: 06 Feb 2017
Posts: 12

Posted: Wed Dec 20, 2023 11:28 am Post subject: Proper Grounding?

I would tie the ground pin (signal ground) to ground regardless of whether it is tied internally to case ground.

Snipping  the shield ground on one side is appropriate.  Don't re-connect, this prevents the shield acting as a current path.

 

                  

                                                                    On Wednesday, December 20, 2023 at 01:05:03 PM CST, bk(at)bradkunkel.com <bk(at)bradkunkel.com> wrote:                 

                 



                 



                 

When I was wiring up a Trio autopilot on my kit, I noticed that the ground wire was already grounded by checking for continuity with an ohm meter.  It appears to be grounded through the metal case of the unit to the panel.  Is that okay?  Should I hook up the ground wire anyway?  It seems that could draw unwanted current through the unit.

  

Also, when I was wiring up the control cable to the servo, I noticed that the shield was grounded at both ends.  Originally, I thought that was the cause of the case grounding above so I snipped it at the autopilot end.  Is that okay or should I reconnect it?

  

Thanks

Brad Kunkel

- 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

bk(at)bradkunkel.com
Guest

Posted: Thu Dec 21, 2023 10:25 am Post subject: Proper Grounding?

Thanks for the help!

 

Brad Kunkel

- 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

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