Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 04-02-2014, 21:48   #1
Registered User
 
rakedfront1's Avatar

Join Date: May 2012
Location: Fayetteville, NC
Boat: West Wight Potter 19
Posts: 27
electrical newbee here please help

I just bought a little 5 w solar panel and as I took out of the box I tested it with an voltmeter. I was getting -ve 20 V in bright sun light. Is this wired backwards? It is after all made in china. The red terminal that comes out of the solar panel clips to the +ve terminal of the battery the book says. But like I said when I tested it, that was actually the -ve terminal .I am afraid to hook it up to the battery, I am pretty sure I can damage it with that little 5w if I hook it up the wrong way. Thank you in advance for all your help........Constantin
__________________

__________________
rakedfront1 is offline   Reply With Quote
Old 04-02-2014, 21:52   #2
Registered User
 
nimblemotors's Avatar

Join Date: Apr 2011
Location: Sacramento, California
Boat: Solar 40ft Cat :)
Posts: 1,557
Re: electrical newbee here please help

Are the leads on your voltmeter connected right?
__________________

__________________
JackB
MiniMPPT Solar Controller
nimblemotors is offline   Reply With Quote
Old 04-02-2014, 21:59   #3
Registered User
 
Wyoming pirate's Avatar

Join Date: Feb 2011
Location: Wyoming or on Godspeed at anchor
Boat: Endeavour 35
Posts: 92
Re: electrical newbee here please help

connect your voltmeter to a battery and see if it still reads the same, correct polarity of course...then you will know the rest of the story.
__________________
Endeavour 35
Cruising...somewhere...
Wyoming pirate is offline   Reply With Quote
Old 04-02-2014, 22:26   #4
Registered User

Join Date: May 2012
Location: Central California
Boat: Catalina 30
Posts: 873
Re: electrical newbee here please help

It is believable. The very first solar panel I bought
25 years ago (still have it, still works), was wired
backwards out of the package.

Yes, make sure you have it correct before you wire
it to your batteries.
__________________
Bill
...........................................
You can't buy happiness, but you can buy ribeye.
jongleur is offline   Reply With Quote
Old 04-02-2014, 22:30   #5
Registered User
 
rakedfront1's Avatar

Join Date: May 2012
Location: Fayetteville, NC
Boat: West Wight Potter 19
Posts: 27
Re: electrical newbee here please help

Yes the leads are connected right and I did test the voltmeter on a car battery. I just want to make sure that the +ve of the solar panel goes to the +ve of the battery. I know that you connect the +ve of one battery terminal to the -ve of another battery when you hook them up in series and I want to make sure that is not the case for solar panels. ...thank you again.....
__________________
rakedfront1 is offline   Reply With Quote
Reply

Tags
cal, electric, electrical, lease

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 12:03.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.