Go Back   iRV2 Forums > RV SYSTEMS AND TECHNOLOGIES FORUMS > RV Systems & Appliances
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 09-28-2016, 08:40 AM   #1
Senior Member
 
millsrv's Avatar
 
Winnebago Owners Club
Workhorse Chassis Owner
Join Date: Feb 2009
Location: Placerville CA
Posts: 154
Residential Solar Panel on RV

Please forgive me if this has already been discussed, I did not find anything on it here.
I am about to install a residential 60 Cell LG Monocrystalline 280 watt 36 volt panel on my Winnebago Voyage. It seems that no one is doing this, perhaps roof space is the big problem, my Winnebago contains the AC in the basement so I have room.
Using a MPPT Solar Controller / Battery charger this panel should work fine. The higher DC voltage generated by the panel will be reduced and the amperage stepped up to charge my 12 volt battery bank. (I have added two 6 volt golf cart batteries to the existing two for a total of four).
I found the panel new for $100 and cannot pass it up. In addition smaller gauge wire can be used as the panel voltage is higher so voltage drop from the panel to the controller is not as big of an issue.
I would appreciate any input about this project and If there is something I have not considered please let me know.
Thank you!
__________________

__________________
Jim
2007 Winnebago Voyage 35L, W24
Retired and Having Fun
millsrv 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 09-28-2016, 09:06 AM   #2
Senior Member
 
Join Date: Feb 2010
Posts: 4,493
No clue here to ecstasy how it works but something to confirm.

The higher voltage indicates less amps for same wattage so smaller wire would be okay..that is easy.

But converting from 36 to 12 could be done in multiple ways either by dc to dc conversion to simple controlled resistance depending on how the controller works.

Look at controller losses before purchasing one.

Have done some design work for battery plants with multiple output voltages and conversion factor can be wasteful of energy.

We used panels rated for dc plant system voltage to avoid most conversion losses.

There are some here with more history with such things and contacting the manufacturers of the controllers can also be helpful as they can help to select most efficient unit.
__________________

__________________
Tony & Lori
1989 Country Coach Savannah SE
TQ60 is offline   Reply With Quote
Old 09-28-2016, 09:14 AM   #3
Senior Member
 
vsheetz's Avatar


 
Fleetwood Owners Club
Ford Super Duty Owner
Join Date: Jun 2012
Location: SoCal
Posts: 11,803
Sure, is now common for folks to be installing high voltage residential type PV panels on RV. If they have the physical room to do so. And some are even placing them high and over equipment on the roof using racking systems. The benefits are as you outline. A search here will find much info and details of many existing projects. Good luck.
__________________
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 09-28-2016, 09:14 AM   #4
Senior Member
 
Join Date: Nov 2015
Posts: 541
I have two 260 watt residential panels on the roof of my 5er, connected in parallel to a 45A MPPT controller. Works just fine.

My wife and I have been out 3 weeks now and have had to use shore power once, in the forests of Oregon.
__________________
2012 Dodge C3500 DRW 4x4 Long Box, WeatherGuard 90 Gal transfer tank, B&W Companion Hitch
2012 Keystone Montana 3100RL, 520W Solar, 460AH batteries, Morningstar MPPT 45 CC, Bogart 2030RV monitor.
drdarrin is offline   Reply With Quote
Old 09-28-2016, 09:24 AM   #5
Senior Member
 
millsrv's Avatar
 
Winnebago Owners Club
Workhorse Chassis Owner
Join Date: Feb 2009
Location: Placerville CA
Posts: 154
Here is a link to the MPPT controller I intend to use;

http://www.solarproductswarehouse.com/inventory/268057/
__________________
Jim
2007 Winnebago Voyage 35L, W24
Retired and Having Fun
millsrv is offline   Reply With Quote
Old 09-28-2016, 09:30 AM   #6
Senior Member
 
Join Date: Nov 2015
Posts: 541
Never heard of it and unless it's configurable to charge the batteries you have or intend to use, temperature compensated, I wouldn't consider it. I went with the Morningstar controller based on much research and reading dozens of blogs and articles on solar.
__________________
2012 Dodge C3500 DRW 4x4 Long Box, WeatherGuard 90 Gal transfer tank, B&W Companion Hitch
2012 Keystone Montana 3100RL, 520W Solar, 460AH batteries, Morningstar MPPT 45 CC, Bogart 2030RV monitor.
drdarrin is offline   Reply With Quote
Old 09-28-2016, 09:31 AM   #7
Senior Member
 
Join Date: Jul 2014
Posts: 9,909
I have 3, 225 watt, 36 volt residental panels, series wired, to a TS MPPT 60 amp controller.

In service since 2011 on a salt water, cruising boat. No problems so far.
__________________
twinboat is online now   Reply With Quote
Old 09-28-2016, 09:33 AM   #8
Senior Member
 
millsrv's Avatar
 
Winnebago Owners Club
Workhorse Chassis Owner
Join Date: Feb 2009
Location: Placerville CA
Posts: 154
Quote:
Originally Posted by drdarrin View Post
Never heard of it and unless it's configurable to charge the batteries you have or intend to use, temperature compensated, I wouldn't consider it. I went with the Morningstar controller based on much research and reading dozens of blogs and articles on solar.
It is both, the battery temp probe cost $11 additional. See the link I posted.
__________________
Jim
2007 Winnebago Voyage 35L, W24
Retired and Having Fun
millsrv is offline   Reply With Quote
Old 09-28-2016, 09:38 AM   #9
Senior Member
 
PJStough's Avatar
 
Join Date: Oct 2015
Posts: 620
Quote:
Originally Posted by drdarrin View Post
Never heard of it and unless it's configurable to charge the batteries you have or intend to use, temperature compensated, I wouldn't consider it. I went with the Morningstar controller based on much research and reading dozens of blogs and articles on solar.
And just because it has a setting for your type of batteries doesnt mean that setting is the optimum setting for your type of battery. If the settings within the battery type are not adjustable, then it is not a very good controller in my opinion.
__________________
Paul & Ann Iowa
2005 Winnebago Voyage 38J
http://stoughrvadventure.blogspot.com/
PJStough is online now   Reply With Quote
Old 09-28-2016, 09:46 AM   #10
Senior Member
 
Join Date: Nov 2015
Posts: 541
Quote:
Originally Posted by millsrv View Post
It is both, the battery temp probe cost $11 additional. See the link I posted.


I understand the desire to save money, I did my own install for that reason. I'm in Sacramento if you'd like to drop by and see what I did.
__________________
2012 Dodge C3500 DRW 4x4 Long Box, WeatherGuard 90 Gal transfer tank, B&W Companion Hitch
2012 Keystone Montana 3100RL, 520W Solar, 460AH batteries, Morningstar MPPT 45 CC, Bogart 2030RV monitor.
drdarrin is offline   Reply With Quote
Old 09-28-2016, 10:36 AM   #11
Senior Member
 
vsheetz's Avatar


 
Fleetwood Owners Club
Ford Super Duty Owner
Join Date: Jun 2012
Location: SoCal
Posts: 11,803
I recommend a quality controller such as from Morningstar.
__________________

__________________
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
Reply

Tags
panel, solar, solar panel



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/residential frig tagcat RV Systems & Appliances 8 02-04-2014 08:41 AM
Residential fridg on solar harleylip RV Systems & Appliances 19 09-21-2013 05:11 PM
what is the difference between RV and Residential solar panels Ed ke6bnl iRV2.com General Discussion 10 08-26-2013 10:20 AM
Chassis Battery Solar Solar Panel camperkids Newmar Owner's Forum 8 07-12-2013 03:14 PM
Residential Refrigerator and solar panels Tucsonmike Tiffin Motorhomes Owners Forum 7 02-16-2012 09:52 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:58 PM.


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