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04-12-2014, 04:33 PM
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#1
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Seasoned Camper
Join Date: Jan 2009
Location: Libby
Posts: 98
M.O.C. #9080
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Adding an amp meter
For the electrical wizards out there. I would like to add an amp meter to the 12V system so I can see what my total draw is at any given time. Anybody have clue on which wire would be a likely candidate to put the meter on? It is a 30A meter. Thanks.
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04-13-2014, 01:37 AM
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#2
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Montana Master
Join Date: Mar 2011
Location: Okeechobee
Posts: 2,150
M.O.C. #11206
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Hi
You will want an amp meter that uses a remote shunt like the ones used in large yachts
Follow the installation instruction carefully the length of the wires to the shunt is critical.
Here is an example.
http://www.ebay.com/itm/New-200V-100...-/350919680206
Phil P
__________________
2009 Montana 3665RE
2009 Duramax 3500 DRW quad cab
personal web page https:// www.sallyscoffees.com
If you get a page not available then remove the "s" after HTTP
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04-13-2014, 07:52 PM
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#4
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Montana Fan
Join Date: Sep 2012
Location:
Posts: 310
M.O.C. #12816
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We're really happy with our TriMetric. A little pricey but well worth it IMHO.
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05-31-2016, 03:58 PM
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#5
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Montana Fan
Join Date: Mar 2015
Location: SE
Posts: 478
M.O.C. #17167
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Do you need a battery disconnect beteeen the shunt and monitor to prevent the minitor from draining juice?
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05-31-2016, 05:20 PM
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#6
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Montana Fan
Join Date: Jul 2015
Location: Fort Wayne
Posts: 477
M.O.C. #17609
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The Trimetric draws less than 1 AH per day with the display on and 1/2 AH with the display off so no, you don't need to disconnect it to prevent the meter from draining the battery.
__________________
2016 Montana 3160RL w/MOR/Ryde IS and Disc Brakes
855W Solar System, TriStar MPPT-60 Controller, Magnum 2800W Inverter, 6 Trojan T-105REs
2015 Chevy Duramax SRW SB Crew Cab
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06-02-2016, 08:17 AM
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#7
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Montana Fan
Join Date: Feb 2014
Location: Chico
Posts: 269
M.O.C. #14041
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Selecting the correct wire may not be possible. The wire leaving the inverter/charger, the one that feeds the fuse pannelis most likely the best choice. That will tell you the normal loads but the landing gear legs and the slide motor usually do not go through the i/c.
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06-02-2016, 11:29 AM
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#8
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Montana Fan
Join Date: Jul 2015
Location: Fort Wayne
Posts: 477
M.O.C. #17609
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The Trimetric and its shunt connects inline on the cable from the negative terminal on the battery as the first connection after the battery. This will show all trailer loads including jacks, slides, and what goes through the power panel.
__________________
2016 Montana 3160RL w/MOR/Ryde IS and Disc Brakes
855W Solar System, TriStar MPPT-60 Controller, Magnum 2800W Inverter, 6 Trojan T-105REs
2015 Chevy Duramax SRW SB Crew Cab
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06-02-2016, 11:41 AM
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#9
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Montana Master
Join Date: May 2016
Location: Cuyahoga Falls
Posts: 699
M.O.C. #18572
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I do believe I have seen surge protectors that will display amps.
(don't need to tap into anything)
__________________
ATC/NAC Jerry A. Burkholder, USN (RET.)
Rule #1. The Chief is always right.
Rule #2. When in doubt, refer to rule #1.
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06-02-2016, 01:48 PM
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#10
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Montana Master
Join Date: Mar 2011
Location: Okeechobee
Posts: 2,150
M.O.C. #11206
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Quote:
quote:Originally posted by JABURKHOLDER
I do believe I have seen surge protectors that will display amps.
(don't need to tap into anything)
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Hi
The surge protector will only show the amps and voltage on the AC shore power. The system being talked about show all the 12V power including the charge rate from the converter.
They are 2 different systems.
Phil P
__________________
2009 Montana 3665RE
2009 Duramax 3500 DRW quad cab
personal web page https:// www.sallyscoffees.com
If you get a page not available then remove the "s" after HTTP
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