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flyer532(at)gmail.com
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 Posted: Mon Mar 01, 2021 9:57 am Post subject: Grounding |
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Hey guys/gals, I am installing 9 different Mitchell Aircraft cluster style gauges. I am using molex connectors. 8 of the gauges have a black grounding wire ( the ninth one is an ammeter with a shunt) and am wondering about the effectiveness of different grounding methods. Was thinking of running the ground wires into a molex connector, then jumping the grounds to a single ground wire out the back of the molex connector then attaching that wire to the metal aircraft frame. Is that a sufficient ground or does each grounding wire need to be run to a grounding bus bar?Â
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DougW
Joined: 16 Sep 2015
Posts: 14
Location: Washington
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| Posted: Mon Mar 01, 2021 12:38 pm Post subject: Grounding |
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I would think you proposal would work electrically but I doubt that I would ever buy a plane wired as you propose.
Why? Maintenance. If one of your gauges stops working, how will you determine if the cause is electrical due to the power or ground wires, or something else. I also do not find the use of the airframe at a ground point appealing as there could be a lot of unknowns involved; would prefer a central ground point with only one electrical connection of the airframe to that ground point. By using a common ground point, you greatly reduce the possibility of ground loops.
Just some food for thought.
Doug
From: owner-aeroelectric-list-server(at)matronics.com <owner-aeroelectric-list-server(at)matronics.com> On Behalf Of Daryl Thompson
Sent: Monday, March 1, 2021 9:56 AM
To: aeroelectric-list(at)matronics.com
Subject: Grounding
Hey guys/gals, I am installing 9 different Mitchell Aircraft cluster style gauges. I am using molex connectors. 8 of the gauges have a black grounding wire ( the ninth one is an ammeter with a shunt) and am wondering about the effectiveness of different grounding methods. Was thinking of running the ground wires into a molex connector, then jumping the grounds to a single ground wire out the back of the molex connector then attaching that wire to the metal aircraft frame. Is that a sufficient ground or does each grounding wire need to be run to a grounding bus bar?
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dfcats7(at)yahoo.com
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| Posted: Mon Mar 01, 2021 1:21 pm Post subject: Grounding |
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Please change my email to the following:
friedmand54(at)yahoo.com
Thank you.
On Monday, March 1, 2021, 03:53:49 PM EST, n1dw <n1deltawhiskey(at)comcast.net> wrote:
#yiv9546534483 #yiv9546534483 -- _filtered {} _filtered {} #yiv9546534483 #yiv9546534483 p.yiv9546534483MsoNormal, #yiv9546534483 li.yiv9546534483MsoNormal, #yiv9546534483 div.yiv9546534483MsoNormal {margin:0in;font-size:11.0pt;font-family:sans-serif;} #yiv9546534483 span.yiv9546534483EmailStyle18 {font-family:sans-serif;color:windowtext;} #yiv9546534483 .yiv9546534483MsoChpDefault {font-family:sans-serif;} _filtered {} #yiv9546534483 div.yiv9546534483WordSection1 {} #yiv9546534483
I would think you proposal would work electrically but I doubt that I would ever buy a plane wired as you propose.
Why? Maintenance. If one of your gauges stops working, how will you determine if the cause is electrical due to the power or ground wires, or something else. I also do not find the use of the airframe at a ground point appealing as there could be a lot of unknowns involved; would prefer a central ground point with only one electrical connection of the airframe to that ground point. By using a common ground point, you greatly reduce the possibility of ground loops.
Just some food for thought.
Doug
From: owner-aeroelectric-list-server(at)matronics.com <owner-aeroelectric-list-server(at)matronics.com> On Behalf Of Daryl ThompsonSent: Monday, March 1, 2021 9:56 AMTo: aeroelectric-list(at)matronics.comSubject: Grounding
Hey guys/gals, I am installing 9 different Mitchell Aircraft cluster style gauges. I am using molex connectors. 8 of the gauges have a black grounding wire ( the ninth one is an ammeter with a shunt) and am wondering about the effectiveness of different grounding methods. Was thinking of running the ground wires into a molex connector, then jumping the grounds to a single ground wire out the back of the molex connector then attaching that wire to the metal aircraft frame. Is that a sufficient ground or does each grounding wire need to be run to a grounding bus bar?
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