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11-06-2022, 06:55 AM
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#81
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Rivet Master
North AL
, Alabama
Join Date: Apr 2019
Posts: 574
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Quote:
Originally Posted by kmrice
Why does the Jack not run through the Shunt?
Karl
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Ideally, it should. Otherwise, you've got a "leaker".
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11-06-2022, 07:24 AM
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#82
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Site Team
1994 25' Excella
Waukesha
, Wisconsin
Join Date: Sep 2020
Posts: 5,581
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The jack is used very little in relation to the overall scope of things, and for us it's usually while either still connected to the TV or while the solar system is keeping things topped up. While ideally everything should go through the shunt, as long as jack manufacturers are using the mounting flange to get the negative connection is will be difficult run it through the shunt. Yes, it's possible to isolate the jack from the chassis when mounting, but I doubt the benefit will outweigh the effort.
__________________
Richard
11018
1994 Excella 25 Follow the build on Gertie!
1999 Suburban LS 2500 w/7.4L V8
1974 GMC 4108a - Custom Coach Land Cruiser (Sold)
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11-06-2022, 08:19 AM
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#83
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Rivet Master
2013 27' FB International
El Dorado Hills
, California
Join Date: Jan 2013
Posts: 2,023
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Why not run the frame grounding wire through the shunt?
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11-06-2022, 08:33 AM
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#84
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Rivet Master
North AL
, Alabama
Join Date: Apr 2019
Posts: 574
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And I assume you have the same problem if you have power stabilizer jacks (grounded at the mount/frame interface).
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11-06-2022, 08:35 AM
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#85
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Rivet Master
North AL
, Alabama
Join Date: Apr 2019
Posts: 574
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Quote:
Originally Posted by kscherzi
Why not run the frame grounding wire through the shunt?
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Guessing you'd have to open up the jack and cut the wire from the flange to the motor ground and splice in a new connection to go to the shunt? Probably not worth the hassle.
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11-06-2022, 08:59 AM
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#86
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Site Team
1994 25' Excella
Waukesha
, Wisconsin
Join Date: Sep 2020
Posts: 5,581
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Quote:
Originally Posted by kscherzi
Why not run the frame grounding wire through the shunt?
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This might be the answer. Depending on how you set up the negative bus bar it would put everything on the shunt.
__________________
Richard
11018
1994 Excella 25 Follow the build on Gertie!
1999 Suburban LS 2500 w/7.4L V8
1974 GMC 4108a - Custom Coach Land Cruiser (Sold)
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11-06-2022, 08:05 PM
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#87
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Rivet Master
1988 32' Excella
Robbinsville
, New Jersey
Join Date: May 2012
Posts: 3,165
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Quote:
Originally Posted by kscherzi
Why not run the frame grounding wire through the shunt?
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From everything I've read that is the way it is supposed to be done, otherwise many things would not be monitored.
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11-07-2022, 01:36 PM
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#88
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3 Rivet Member
2021 16' Caravel
2022 23' Globetrotter
Callao
, Virginia
Join Date: Nov 2020
Posts: 118
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Thanks for all of the information which is helping this novice understand. After reading it, I'm thinking that the jack, as shown on the diagram, IS running through, and being tracked by, the shunt.
As I understand it, the jack is getting to the negative terminal of the battery by being grounded to the frame. If so, the frame must be connected to the negative terminal of the battery. On the diagram, the only cables going to the negative terminal of the battery connect to the shunt, so it seems to me that the frame is connected to the negative terminal somewhere on the other side of the shunt (as suggested by kscherzi). If so, it would seem that anything grounded to the frame, including the jack, is going through the shunt, and is therefore being counted when the shunt tracks power in and power out.
Am I missing something or have I finally got it right? I believe my shunt is wired similarly to the way shown on the diagram. There are no cables connecting to the negative terminal except the one running to the shunt.
Thanks again for all the information.
Karl
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