Solar Charge Controler: Is this crazy? - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 03-04-2010, 05:53 PM   #1
Member
 
Name: Russ
Trailer: Boler
Minnesota
Posts: 62
I'm in the process of renovating a 71 Boler 13 and one of the things I'd like to add in the future is a solar setup. Whatever type of mount I use for the panel(s) I'd like it to be removable so that I can locate the panel in the sun even when the trailer is parked in the shade. That means I'll need some type of extension cord/quick connector setup.

That got me thinking about using the charge line already built in to my 7 pin bargman connector rather than punching another hole and running another wire. That means that the solar charge controller would be inline even when charging from the tow vehicle. To me, this actually seems like it might be a good idea and allow for a better, more controlled charge when hooked up (assuming the charge controller is large enough to handle the amperage coming from the tow vehicle's alternator).

I don't think I've run across anyone doing this which make me wonder if I'm missing something.

Thanks,
Russ
__________________

__________________
RussL is offline   Reply With Quote
Old 03-04-2010, 07:03 PM   #2
Moderator
 
Frederick L. Simson's Avatar
 
Name: Frederick
Trailer: Fiber Stream
California
Posts: 8,151
Registry
Send a message via AIM to Frederick L. Simson
Talking

Quote:
That got me thinking about using the charge line already built in to my 7 pin bargman connector rather than punching another hole and running another wire. That means that the solar charge controller would be inline even when charging from the tow vehicle. To me, this actually seems like it might be a good idea and allow for a better, more controlled charge when hooked up [b](assuming the charge controller is large enough to handle the amperage coming from the tow vehicle's alternator).

I don't think I've run across anyone doing this [b]which make me wonder if I'm missing something.
The charge controller cannot handle the amperage coming in from the tow vehicle's alternator, is what I've been told.
You don't mount it inside the trailer and hook it up IN SERIES with the tow vehicle's alternator in the charge line.

There are a couple of ways this has been done by others...
(example #1)
Link to my Solar installation
I mount my controller inside my trailer's battery box IN PARALLEL with the incoming charge line from the tow vehicle's alternator.
I use a separate cable to connect the panels.

(example #2)
Link to Jeanne & Steve's Solar installation
They use their 7-pin bargeman connector to plug into a Solar transfer box they built which contains the charge controller and has a connector for the panels. This keeps the tow vehicle's alternator out of the circuit when the solar panels are in use, and the charge controller out of the circuit when connected to the tow vehicle.
__________________

__________________
Frederick - The Scaleman
1978 Fiber Stream 16 named "Eggstasy" & 1971 Compact Jr. named "Boomerang"
Frederick L. Simson is offline   Reply With Quote
Old 03-04-2010, 07:26 PM   #3
Member
 
Name: Russ
Trailer: Boler
Minnesota
Posts: 62
Quote:
The charge controller cannot handle the amperage coming in from the tow vehicle's alternator, is what I've been told.
You don't mount it inside the trailer and hook it up IN SERIES with the tow vehicle's alternator in the charge line.
Thanks Frederick,

That's the information I was looking for and my searches hadn't turned up your installation or the other that you linked. I really like the external junction box. That would make it really easy to travel lighter when I didn't need the solar setup and allow me to use it elsewhere.

Russ
__________________
RussL is offline   Reply With Quote
Old 03-04-2010, 08:08 PM   #4
Moderator
 
Gina D.'s Avatar
 
Name: Gina D.
Trailer: '77 Leocraft 17 & Former Burro owner and fan!
West Coast USA
Posts: 9,016
Registry
I did this with mine

Linky to Using pigtail for solar charging
__________________
Gina D. is offline   Reply With Quote
Old 03-04-2010, 11:36 PM   #5
Senior Member
 
Joy A's Avatar
 
Trailer: 2001 13 ft Scamp / 1993 Jeep Cherokee
Posts: 1,252
I went to West Marine and purchased a set of recepticle and plug for a trolling motor. The recepticle/outlet is water proof and on the side of the Scamp. The plug, which is locking, was added to a long 2 wire multi strand cord attached to the solar panel. While I have only placed my solar panel on the roof of the Scamp and dropped the cord down the side to the outlet, I do have the ability to run it out to a sunny spot if necessary.

Now from the recepticle/outlet I ran wires to the solar controller inside the trailer and from the controller to the battery. This setup works great for me.


Click image for larger version

Name:	120_2017.JPG
Views:	23
Size:	32.9 KB
ID:	26614
[attachment=31471:
120_2020.JPG]
Click image for larger version

Name:	120_2025.JPG
Views:	25
Size:	60.6 KB
ID:	26615
Attached Thumbnails
120_2020.JPG  
__________________
Joy A. & Lily
and "Puff", too
No. Ca. Sierra Foothills
Joy A is offline   Reply With Quote
Old 03-05-2010, 05:45 PM   #6
Member
 
Name: Russ
Trailer: Boler
Minnesota
Posts: 62
Gina and Joy,

Thanks for the additional information. Those are great solutions and I'll probably end up utilizing pieces of both of them.

Russ
__________________
RussL is offline   Reply With Quote
Old 03-06-2010, 10:01 AM   #7
Senior Member
 
Roy in TO's Avatar
 
Name: Roy
Trailer: 1972 boler American and 1979 Trillium 4500
Ontario
Posts: 4,954
I've got mine so the wire / connector drops through a hole in the floor under the front bench seat. I plan on finding one of those "flip top stoppers" they use in boats to seal off the hole this season.
__________________

__________________
Roy in TO 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
SOLAR Controler D Tharp Electrical | Charging, Systems, Solar and Generators 5 08-25-2009 12:09 AM
Solar Charge Controller Installation kevin61 Modifications, Alterations and Updates 3 02-22-2009 09:20 AM
Solar charge controller yvonne Care and Feeding of Molded Fiberglass Trailers 24 06-26-2008 06:46 AM
Fluid, Battery Levels & Solar Charge Controller? peterh Electrical | Charging, Systems, Solar and Generators 9 04-27-2007 05:45 PM
Brake controler Legacy Posts Problem Solving | Owners Helping Owners 1 02-21-2003 04:57 PM

» Upcoming Events
No events scheduled in
the next 465 days.
» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:38 AM.


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