Solar charging system completed - Page 2 - Fiberglass RV

Thread Tools Search this Thread Display Modes
Old 12-07-2013, 06:40 PM   #15
Senior Member
Name: Russ
Trailer: Scamp 16' side dinette
Posts: 567
Originally Posted by peterh View Post
A bit late to point his out now, but had wired your solar panels in series (charge controller wired to panel one, panel one wired to panel two, then panel two wired back to the charge controller) instead of in parallel (charge controller wired to both panels one and two, then the panels wired back to the controller) you could have gone with 14g wire and had an almost identical drop in current. Unlike older Pulse Wave Modulation (PWM) controllers, most most modern Maximum Power Point Tracking (MPPT) controllers can handle two, sometimes even three or four panels wired in series, and wiring them in series increases the voltage and watts carried by the system without increasing the loss-inducing current.
Yes, I read about that option. There are a few drawbacks to doing it that way. I don't recall all of them, but partial shading is one, and smaller arrays are not ideal for series wiring. I weighed it out and selected parallel. I can also only use one panel if conditions are right. Parallel wiring the output current doubles too, but you need the big wire to keep the waste down. I think my 8 gauge wire loses about .2V with the 30 foot reach. The panels produce about 18v, so still plenty to work with.

ruscal is offline   Reply With Quote
Old 12-07-2013, 07:56 PM   #16
Senior Member
cpaharley2008's Avatar
Name: jim
Trailer: 2016 2ndGen Escape19 Prairie Schooner pulled by 2014 Dodge Ram Hemi Sport
Posts: 6,241
Nice set up on the outside box, I see a lot thought there.

Never in doubt, often wrong
cpaharley2008 is offline   Reply With Quote


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
Bigfoot Solar System Tim D. Modifications, Alterations and Updates 14 06-16-2016 05:26 PM
My New Solar System Sharon G Modifications, Alterations and Updates 28 05-20-2013 05:12 PM
Parkliner Electrical System & AGM Battery Charging-Maintaining accrete Electrical | Charging, Systems, Solar and Generators 15 05-16-2013 06:03 PM
Dream Solar system Steve Hammel Modifications, Alterations and Updates 37 10-28-2012 03:02 PM
Solar System Advice Legacy Posts Care and Feeding of Molded Fiberglass Trailers 11 05-13-2003 10:03 PM

» Trailer Showcase




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

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 02:45 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.