Go Back   iRV2 Forums > CAMPING, TRAVEL and TRIP PLANNING > Boondocking
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-23-2013, 11:20 AM   #1
Member
 
mole007's Avatar
 
Tiffin Owners Club
Join Date: Mar 2012
Location: Colorado Springs,Colorado
Posts: 34
Solar am I missing something?

I have installed solar panels on the roof of my motorhome, maximum amps are suppose to be about 28, However on a good day I get about 22, I installed a morning star ts-45 controller and a Trimetric rv-2025 battery monitor, since the time I energized the system the battery monitor has not correctly shown the amps at the batteries, like this AM, I checked the amps at the junction box and it showed 15.2 amps and at the controller it showed 14.4 amps and at the batteries it showed 13.8 amps however the 2025 battery monitor shows 1.5 Amps, and it does show 14.8 Volts and my batteries are 94% charged. I checked the amps with a clamp on amp meter. the motorhome has a .2 amp draw when the coach 12v switch is turned off. both controller and monitor are wired per their instruction manual, so am I missing something the tests this AM were b-4 full sun just to show the difference in the readings.
__________________

__________________
Larry & Barb: 2010 Phaeton 36QSH, Toad's, 2006 Jeep Rubicon, or 2003 Dodge Dakota 4.7 V-8 4X4
mole007 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 07-23-2013, 07:24 PM   #2
Senior Member
 
Ford Super Duty Owner
Join Date: Dec 2005
Location: Buxton, North Dakota
Posts: 3,334
Because you are getting incorrect reading of current on the Trimetric, I would verify every thing in the shunt wiring. Is it attached at the battery terminal? What size cables are you using. How are you measuring current? With a clamp on DC ammeter? What panels are you using and how many?
__________________

__________________
2003 Winnebago Adventurer 38G F53/ V10 605 watts of Solar
1999 Winnebago Brave 35C Handicap Equipped
F53/V10
1999 Jeep Cherokee & 1991 Jeep Wrangler Renegade
John Hilley is offline   Reply With Quote
Old 07-23-2013, 08:20 PM   #3
Senior Member
 
vsheetz's Avatar


 
Fleetwood Owners Club
Ford Super Duty Owner
Join Date: Jun 2012
Location: SoCal
Posts: 11,778
Max amps should be 28 and you are seeing 22. How did you determine the Max amps should be 28? Max system peak amps will vary with panel angle, time of year, latitude, etc.
__________________
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
vsheetz is offline   Reply With Quote
Old 07-23-2013, 08:36 PM   #4
Senior Member
 
Walter5555's Avatar
 
National RV Owners Club
Join Date: Oct 2012
Location: Union City, Ca.
Posts: 522
What are you concerned with?
If you have a voltage regulate connected to them it will show you what amps are coming through along with if the batterys are charged it will turn itself off until the batterys start to get low again. .
Just a thought.
__________________
Walter5555 is offline   Reply With Quote
Old 07-29-2013, 09:23 AM   #5
DJ
Member
 
DJ's Avatar
 
Join Date: Jan 2000
Location: From the 413, living in the 703
Posts: 44
Have you confirmed that your clamp on ammeter will read DC current?
__________________
DJ is offline   Reply With Quote
Old 09-30-2013, 12:51 PM   #6
Member
 
Join Date: Feb 2011
Location: Elbert, CO
Posts: 75
Was there a final resolution to this? One thought I had was that as you get to 94% SOC (state of charge) the charge controller will start to taper off amps and raise volts so it will not be unusual that the amp readings will vary. Though, having said that, if the CC doesn't want amps it won't pull them from panels in the first place. Hmmm. I'm leaning toward incorrect wiring someplace?
__________________
2012 Keystone Cougar 318SAB
2008 Ford F250 6.4 Diesel
http://cuernoverdesolar.wordpress.com/
kellylipp is offline   Reply With Quote
Old 10-01-2013, 09:39 AM   #7
Senior Member
 
Join Date: Nov 2007
Location: somewhere in the west
Posts: 1,168
If the voltage is reading 14.8, then there should not be a lot of amperage passing.

Ed
__________________
Ed-Sommers is offline   Reply With Quote
Old 10-17-2013, 11:08 AM   #8
Member
 
mcshanks's Avatar
 
Join Date: Dec 2008
Posts: 58
As you can see my unit has the same symptom as OP ,but when I kill the batteries the Trimetric reads the same as the Blue Sky,So it seems the coach batteries,and the rig use up the difference,as verified by checking all cables on my battery bank.
DC amps read (ZERO) on AC on my meter so I can't read it wrong.
Total possible amps per sticker on panels is 21.9,
usually ~17,checked wiring 4 (four) GAZILLION times. Wiring IS correct.
Rig set from Fleetwood so that above 12.3 batteries are tied together through a solenoid. I don't worry about the volts both match.
__________________
Morris & Lena
2001.5 Fleetwood Discovery CAT 3126, 2006 Dodge Dakota 4x4, Arctic Cat TRV, lots of prospecting gear.
mcshanks is offline   Reply With Quote
Old 11-13-2013, 03:20 PM   #9
Senior Member
 
Join Date: Apr 2010
Location: Full Timer / Vagabond
Posts: 609
You did run a #4 wire from the junction box to the controller and then to the batteries didn't you ???
It sounds like a possible case of too small a wire.
Are the batteries getting a 100% charge on a sunny day? If not the wires must be the problem as long as all connections are very tight.

__________________
Ralph & Snickers
2006 3500 Chevy Dually - 8.1 - Allison
2006 30' New Horizon - Solar
ralper is offline   Reply With Quote
Old 11-13-2013, 07:25 PM   #10
Senior Member
 
Ford Super Duty Owner
Join Date: Dec 2005
Location: Buxton, North Dakota
Posts: 3,334
Quote:
Originally Posted by mcshanks View Post
As you can see my unit has the same symptom as OP ,but when I kill the batteries the Trimetric reads the same as the Blue Sky,So it seems the coach batteries,and the rig use up the difference,as verified by checking all cables on my battery bank.
DC amps read (ZERO) on AC on my meter so I can't read it wrong.
Total possible amps per sticker on panels is 21.9,
usually ~17,checked wiring 4 (four) GAZILLION times. Wiring IS correct.
Rig set from Fleetwood so that above 12.3 batteries are tied together through a solenoid. I don't worry about the volts both match.
The 17 and 21.9 are actually volts not amps.
__________________
2003 Winnebago Adventurer 38G F53/ V10 605 watts of Solar
1999 Winnebago Brave 35C Handicap Equipped
F53/V10
1999 Jeep Cherokee & 1991 Jeep Wrangler Renegade
John Hilley is offline   Reply With Quote
Old 11-13-2013, 07:46 PM   #11
Member
 
mcshanks's Avatar
 
Join Date: Dec 2008
Posts: 58
Electrical Perfomance under Standard Test Conditions (*STC)
Maximum Power (Pmax) 135W (+5%/–5%)
Maximum Power Voltage (Vmpp) 17.7V
Maximum Power Current (lmpp) 7.63A
Three panels @ 7.63 Amps =22.89 amps @ 17.7 volts
Straight from the spec sheet for the panel Kyocera 135 watt
__________________
Morris & Lena
2001.5 Fleetwood Discovery CAT 3126, 2006 Dodge Dakota 4x4, Arctic Cat TRV, lots of prospecting gear.
mcshanks is offline   Reply With Quote
Old 11-13-2013, 08:30 PM   #12
Senior Member
 
terry735001's Avatar
 
Join Date: Sep 2012
Posts: 1,158
Blog Entries: 11
is the Trimetric rv-2025 ground installed on the right side of things
Trimetric rv-2020 has alot of settings i am not sure on the 2025 but if its any thing like what i have its fun to get it setup right but when its right its right

when picking your solar panels did you install a HOME solar system OR a battery system
there is 2 types but is never really talked of
__________________
terry735001 is offline   Reply With Quote
Old 11-13-2013, 09:47 PM   #13
Senior Member
 
vsheetz's Avatar


 
Fleetwood Owners Club
Ford Super Duty Owner
Join Date: Jun 2012
Location: SoCal
Posts: 11,778
mcshanks - I am not following what your problem statement is, can you re-state it?
__________________
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
vsheetz is offline   Reply With Quote
Old 11-13-2013, 10:35 PM   #14
Member
 
mcshanks's Avatar
 
Join Date: Dec 2008
Posts: 58
Vince,I just quoted the spec sheet for my panels after Mr Hilley stated I was confusing volts and amps.
Terry, the panels were installed by a solar store in Quartzsite,and are, from what I read, Rv usable/compatible not for grid tied/home use and the Trimetric is wired per the instruction sheet.
__________________

__________________
Morris & Lena
2001.5 Fleetwood Discovery CAT 3126, 2006 Dodge Dakota 4x4, Arctic Cat TRV, lots of prospecting gear.
mcshanks is offline   Reply With Quote
Reply

Tags
solar



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:20 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.