Solar panel question - Escape Trailer Owners Community
Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×

Go Back   Escape Trailer Owners Community > Escape Tech > Problem Solving | Owners helping each other
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 03-06-2021, 06:02 PM   #1
Senior Member
 
HABBERDABBER's Avatar
 
Join Date: Feb 2009
Location: Madison area, Wisconsin
Trailer: 2016 Escape 19
Posts: 651
Solar panel question

A buddy gave me a 20 watt, nominal 48 volt solar panel today. It is 48 V output, as I checked and tested it today, in the sun. So what is this good for? Can it be used in some fashion with a 12 volt Escape system?


I never got far enough in my schooling to know if it has utility or use for me.


Got a notion?
__________________

HABBERDABBER is offline   Reply With Quote
Old 03-06-2021, 08:09 PM   #2
Senior Member
 
fudge_brownie's Avatar
 
Join Date: Nov 2008
Location: Janesville, WI, Wisconsin
Trailer: Escape 19 (sold) Escape 21 2014
Posts: 1,677
Is it just the panel? A controller attached to the panel? Any other connections? I assume a rigid panel with a aluminum frame?
__________________

__________________
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 03-06-2021, 08:26 PM   #3
Senior Member
 
HABBERDABBER's Avatar
 
Join Date: Feb 2009
Location: Madison area, Wisconsin
Trailer: 2016 Escape 19
Posts: 651
It's a rigid glass panel and aluminum frame with a black box on back. All other items TBD. Just got it, and not studied yet. Will post a pic tomorrow.



I trust you are wearing your sunscreen, a hat, and sunglasses too, down there in Florida, Paul?
HABBERDABBER is offline   Reply With Quote
Old 03-07-2021, 09:42 AM   #4
Senior Member
 
Vermilye's Avatar
 
Join Date: Feb 2010
Location: Oswego, New York
Trailer: 2017 Escape 21C, 2018 Ford F150
Posts: 4,392
If you have an MPPT solar controller it could be used with a 12V system, although 20 watts is hardly worth it other than as a battery maintainer. The voltage is too high for most PWM controllers such as the GoPower.
__________________
Jon Vermilye My Travel Blog
Travel and Photo Web Page ... My Collection of RV Blogs 2018 F150 3.5EB, 2017 21
Vermilye is online now   Reply With Quote
Old 03-07-2021, 12:50 PM   #5
Senior Member
 
HABBERDABBER's Avatar
 
Join Date: Feb 2009
Location: Madison area, Wisconsin
Trailer: 2016 Escape 19
Posts: 651
48V panel

The panel was from an above ground hot water circulating pump system. It is 14" X 19". Here are photos of the backside info.


The black box is only a protective output junction box.


I have 200W photovoltaic capability, so I don't need this pnel, but was wondering why the 48V output.
Attached Images
File Type: jpg IMG_2850.jpg (115.4 KB, 24 views)
File Type: jpg IMG_2849.JPG (393.8 KB, 10 views)
HABBERDABBER is offline   Reply With Quote
Old 03-07-2021, 02:34 PM   #6
Senior Member
 
Join Date: Mar 2018
Location: Tulsa, Oklahoma
Trailer: 2013 Li'l Hauley
Posts: 547
It might make a good "white elephant" gift at Christmastime...
__________________
Losing weight puts one at much greater risk of becoming thin.
Mike G is offline   Reply With Quote
Old 03-07-2021, 03:49 PM   #7
Senior Member
 
Join Date: Dec 2012
Location: Edmonton, Alberta
Trailer: 1979 Boler B1700
Posts: 13,594
Quote:
Originally Posted by HABBERDABBER View Post
A buddy gave me a 20 watt, nominal 48 volt solar panel today. It is 48 V output, as I checked and tested it today, in the sun.?
Quote:
Originally Posted by HABBERDABBER View Post
The panel was from an above ground hot water circulating pump system. It is 14" X 19". Here are photos of the backside info.

... was wondering why the 48V output.
The open-circuit voltage is rated at 43.8 V (not 48 V), which - like all of the other voltage specs - is only double the voltage of panels which are intended for nominally 12-volt systems. The open-circuit voltage isn't important, and isn't the nominal voltage rating; the panel can't produce any power at that voltage. This panel is presumably designed for a nominally 24-volt system; the pump system probably has a nominally 24 V lead-acid battery.

It would be good for anyone with a nominally 24-volt system. There are lots of those, but not in RVs.
Brian B-P is offline   Reply With Quote
Old 03-07-2021, 07:01 PM   #8
Senior Member
 
HABBERDABBER's Avatar
 
Join Date: Feb 2009
Location: Madison area, Wisconsin
Trailer: 2016 Escape 19
Posts: 651
Thank you all

I now know more, and yes, this is a "white elephant" item, or more likely, a St. Vincent de Paul charity donation, along with all the other detritus I've accumulated and need to dispose/ and downsize.
HABBERDABBER is offline   Reply With Quote
Old 03-07-2021, 09:01 PM   #9
Site Team
 
John in Santa Cruz's Avatar
 
Join Date: Dec 2017
Location: Mid Left Coast, California
Trailer: 2014 Escape 21
Posts: 2,679
the key spec there is Vmp: 36V, which is the voltage at max power. the open circuit voltage of 43V, its making 0 amps therefore zero watts. at 36.2V, it outputs 0.55A which is where that 20A number comes from.

yeah, its for charging a 24V system . about the right size for a pair of 12V 20AH small VRLA AGM batts in series, which is what might run a gate opener or your pump thing, or whatever.
John in Santa Cruz is offline   Reply With Quote
Old 03-08-2021, 08:08 AM   #10
Senior Member
 
fudge_brownie's Avatar
 
Join Date: Nov 2008
Location: Janesville, WI, Wisconsin
Trailer: Escape 19 (sold) Escape 21 2014
Posts: 1,677
Tom,
With enough effort you could use the panel to drive your outdoor decorations? Here in Florida every one has an Olaf light up display at the Disney campground. How about setting up a trail camera with flood light? A theft deterrent system. Can you somehow incorporate the panel into a woodworking project, you are quite handy at that? The possibilities are endless, donít get discouraged.
__________________

__________________
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
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




» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Escape Trailer Industries or any of its affiliates. This is an independent, unofficial site.


All times are GMT -5. The time now is 09:49 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Copyright 2012 Social Knowledge, LLC All Rights Reserved.
×