Portable Solar and Monitor Location - Page 2 - Escape Trailer Owners Community

Go Back   Escape Trailer Owners Community > Escape Tech > Modifications and Alterations
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 01-08-2014, 01:01 PM   #11
Member
 
Join Date: Jan 2013
Location: Strongsville, Ohio
Trailer: 2013 Escape 19
Posts: 88
Quote:
Originally Posted by thoer View Post
Why the need for heavier wire with the solar as opposed to the alternator?
This question of wire size comes down to basic electrical theory. Larger wires will loose less voltage over a long distance than smaller wires. I have seen that with my 2013 Ford F-150 and my Escape 19 running down the highway all day that the dual 6 volt batteries never fully charge. ( according to the specific gravity of the batteries)

This is at least partially accounted for by losses created by the undersized "charge" conductor on the truck. Bigger wire might help here as well because the batteries will not charge correctly if the correct voltage is not applied. By the way the on board charger in the Escape never fully charges the batteries either, which I think is also related to low voltage.

I think the best solar info on the web is Handy Bob, even if you disagree with some of his ideas. HandyBob's Blog « Making off grid RV electrical systems work He's a full timer in a big rig that never uses a generator.
__________________

SeldomSeen is offline   Reply With Quote
Old 01-08-2014, 01:18 PM   #12
Senior Member
 
thoer's Avatar
 
Join Date: Oct 2009
Location: Galesville, Wisconsin
Trailer: 2017 21 "Blue II" & 2017 Highlander XLE (previously 2010 17B "Blue" & 2008 Tacoma)
Posts: 3,955
Seldom - I understand about wire sizing and voltage drop. I was assuming that the tow and trailer have large enough gauge wire to carry sufficient charging voltages, but I guess that assumptions may be incorrect. Do you know what gauge wire Escape uses for that run? (I am trying to track down what Toyota uses on the Tacoma)

Our Tacoma with the tow package has a 130 amp alternator and seems to completely top off our dual 6 volt batteries during our drives according to my Equus 3721 Battery and Charging System Monitor. (Also so does our OEM charger according to that monitor)
__________________

__________________
Eric (and Mary who is in no way responsible for anything stupid I post)

SAE Towing Standard "Beware of false knowledge; it is more dangerous than ignorance." George Bernard Shaw
thoer is offline   Reply With Quote
Old 01-08-2014, 02:13 PM   #13
Senior Member
 
Join Date: Aug 2012
Location: N/A, Indiana
Trailer: Escape
Posts: 931
From Carmanah- GoPower solar systems that Escape TT installs:
We use a 10'gauge wire for panel installation. If you have any technical questions please email ahillis@carmanah.com or call 1-800-667-6527 ext. 8329
Our 2012 Tundra (with towing package) with a 170A alternator uses 10 guage wire for the charging circuit to the 7 blade trailer harness connector.
__________________
"Never argue with an idiot. They only bring you down to their level and beat you with experience." George Carlin
Jubal is offline   Reply With Quote
Old 01-08-2014, 02:18 PM   #14
Senior Member
 
fudge_brownie's Avatar
 
Join Date: Nov 2008
Location: Janesville, WI, Wisconsin
Trailer: Escape 19 (sold) Escape 21 2014
Posts: 1,226
I have not examined my wire gauges but Jubal, the previous poster, replied to a past question about gauge and said that Escape uses either #8 AWG or #10 AWG. In Jubal's case he said they used one of each on the live and ground wire from the Bargman 7 pin connector to the Progressive controller. He replaced the 10 gauge wire with a 8 gauge.

My understanding you can examine the connector on the battery side of the wire to match the color code with the AWG of the wire. There are different views if you have dual 6 volts, the wire between the batteries could be between #8 AWG and #2 AWG. This is somewhat dependent on what you are running. For instance those with an inverter would be using the smaller number but thicker wire.
__________________
Paul and Janet Braun
2003 Toyota 4Runner V8 now 2012 Toyota Sequoia V8
Escape 19' 2010 now 2014 Escape 21'
fudge_brownie is offline   Reply With Quote
Old 01-08-2014, 02:25 PM   #15
Senior Member
 
Join Date: Aug 2012
Location: N/A, Indiana
Trailer: Escape
Posts: 931
Do not rely on the connector size to determine the wire size. Escape attached 8 guage wire to the 6V batteries with 10/12 yellow guage connectors. The wire guage is usually printed on the wire insulation.
The gauge of the wire that connects the two 6V batteries in series should at least be the same gauge as the largest wires that connect the batteries to the converter or inverter.
__________________
"Never argue with an idiot. They only bring you down to their level and beat you with experience." George Carlin
Jubal is offline   Reply With Quote
Old 01-08-2014, 02:51 PM   #16
Senior Member
 
thoer's Avatar
 
Join Date: Oct 2009
Location: Galesville, Wisconsin
Trailer: 2017 21 "Blue II" & 2017 Highlander XLE (previously 2010 17B "Blue" & 2008 Tacoma)
Posts: 3,955
I just checked and the wires connect to my dual 6v are 10 gauge, so I am assuming that the run thru the trailer from the 7 pin is most like also only 10.

So, given the 17' length of our trailer with a hypothetical 80 watt solar panel, outputting into one of the controllers that outputs 14.1 our voltage drop over the trailer length would be 0.23v resulting in 13.87v according to Voltage Drop Calculator

Then there will be more voltage drop depending on length and gauge of the wire to the panel. So it looks like Paul's method of putting the plug in connector right at the batteries is what I am going to consider.
__________________
Eric (and Mary who is in no way responsible for anything stupid I post)

SAE Towing Standard "Beware of false knowledge; it is more dangerous than ignorance." George Bernard Shaw
thoer is offline   Reply With Quote
Old 01-08-2014, 04:10 PM   #17
Member
 
Join Date: Jan 2013
Location: Strongsville, Ohio
Trailer: 2013 Escape 19
Posts: 88
I believe that the correct voltages required for different charge cycles are shown here for the Interstate GC2-XHD-UTL that Escape installed in my 19. Just multiply by 2 for the 12v value.
SeldomSeen is offline   Reply With Quote
Old 01-08-2014, 04:12 PM   #18
Member
 
Join Date: Jan 2013
Location: Strongsville, Ohio
Trailer: 2013 Escape 19
Posts: 88
Now for the battery charging voltages, once again...
Attached Images
File Type: jpg battery charge data.jpg (111.7 KB, 70 views)
SeldomSeen is offline   Reply With Quote
Old 01-08-2014, 04:47 PM   #19
Senior Member
 
jamie beers's Avatar
 
Join Date: Sep 2013
Location: Vancouver, BC, British Columbia
Trailer: 19'
Posts: 318
Sorry for my ignorance - newbie here - talking out loud when I should be listening.... But Seldom's chart would seem to indicate that Eric is not really going to be getting much of a charge to his battery?
jamie beers is offline   Reply With Quote
Old 01-08-2014, 06:40 PM   #20
Senior Member
 
thoer's Avatar
 
Join Date: Oct 2009
Location: Galesville, Wisconsin
Trailer: 2017 21 "Blue II" & 2017 Highlander XLE (previously 2010 17B "Blue" & 2008 Tacoma)
Posts: 3,955
Quote:
Originally Posted by jamie beers View Post
Sorry for my ignorance - newbie here - talking out loud when I should be listening.... But Seldom's chart would seem to indicate that Eric is not really going to be getting much of a charge to his battery?
No ingnorance at all, you are right. If I ran that setup thru the 7 pin plug like I was hoping to do, the voltage drop would make it hardly worthwhile apparently. And looking at those Interstate recommendations, those voltage seem quite a bit higher than most chargers and controllers put out.
__________________

__________________
Eric (and Mary who is in no way responsible for anything stupid I post)

SAE Towing Standard "Beware of false knowledge; it is more dangerous than ignorance." George Bernard Shaw
thoer is offline   Reply With Quote
Reply

Thread Tools
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



All times are GMT -5. The time now is 10:48 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2012 Social Knowledge, LLC All Rights Reserved.