RV.Net Open Roads Forum: Tech Issues: Tripping solar panel breaker

RV Blog

  |  

RV Sales

  |  

Campgrounds

  |  

RV Parks

  |  

RV Club

  |  

RV Buyers Guide

  |  

Roadside Assistance

  |  

Extended Service Plan

  |  

RV Travel Assistance

  |  

RV Credit Card

  |  

RV Loans

Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Tech Issues

Open Roads Forum  >  Tech Issues

 > Tripping solar panel breaker

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 3  
Prev
Sponsored By:
StirCrazy

Kamloops, BC, Canada

Senior Member

Joined: 07/16/2003

View Profile



Posted: 05/13/22 08:41am Link  |  Quote  |  Print  |  Notify Moderator

CA Traveler wrote:

StirCrazy wrote:

I am looking at changing the controler to a MPPT so I can put them in series. in parralel with a 8 ga wire you are looking at losing up to 0.38V over 10 feet, in series that would be a voltage drop of 0.19. doesnt sound like much but it adds up..
Series also has greater shade tolerance/power with panels that have bypass diodes (most have them).

My 3 series 30V panels have 3 bypass diodes, so 10V per panel section. I've seen charging at 20V increasing in 10V increments to 90V due to a leafy shade tree. ie The 20V can be from 2 different panels. Parallel would require sun on the entire panel and hence charging would occur with 1, 2 or 3 panels with sun.


yup, I know that also, was just looking at the efficiency of voltage drop in this senario. also lowering the amps on his line.


2014 F350 6.7 Platinum
2016 Cougar 330RBK
1991 Slumberqueen WS100

StirCrazy

Kamloops, BC, Canada

Senior Member

Joined: 07/16/2003

View Profile



Posted: 05/13/22 08:43am Link  |  Quote  |  Print  |  Notify Moderator

EMD360 wrote:

2oldman wrote:

I don't know why you have to fuse panels.


Apparently you don’t if wired in series. The amps are not high enough to damage the wires if there is a short circuit.
That’s what the windynation site that was shared explained.


I still did for mine, I did both the panel side and the battery side of the controler with manual tripable breakers so I can use them as a disconect if I have to do any work.

Steve

Housted

Los Angeles, CA

Senior Member

Joined: 05/05/2004

View Profile



Good Sam RV Club Member


Posted: 05/13/22 11:52am Link  |  Quote  |  Print  |  Notify Moderator

StirCrazy wrote:

EMD360 wrote:

2oldman wrote:

I don't know why you have to fuse panels.


Apparently you don’t if wired in series. The amps are not high enough to damage the wires if there is a short circuit.
That’s what the windynation site that was shared explained.


I still did for mine, I did both the panel side and the battery side of the controler with manual tripable breakers so I can use them as a disconect if I have to do any work.

Steve


X2


2015 Dodge 3500 Laramie 6.7 CTD Tow Rig Integrated ball with Andersen Ultimate 5th Wheel hitch
2011 Arctic Fox 29-5T 5th - 4 Pt Leveling, Disk Brakes, 1050 W Solar,
300 Amps of LiFePO4,3000 Watt Inverter
  • pic
    Too many mods to Truck and trailer to list.


  • EMD360

    Arvada, CO

    Senior Member

    Joined: 01/18/2010

    View Profile



    Good Sam RV Club Member


    Posted: 06/17/22 11:24am Link  |  Quote  |  Print  |  Notify Moderator

    Just reporting that the upgrade to a 30 amp breaker on the panel side worked. But of course the amps I was reading were below 15 when tested.


    2018 Minnie Winnie 25b New to us 3/2021
    Former Rental Owners Club #137
    2003 Itasca Spirit 22e 2009-2021

    Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
    Page of 3  
    Prev

    Open Roads Forum  >  Tech Issues

     > Tripping solar panel breaker
    Search:   Advanced Search

    Search only in Tech Issues


    New posts No new posts
    Closed, new posts Closed, no new posts
    Moved, new posts Moved, no new posts

    Adjust text size:




    © 2022 CWI, Inc. © 2022 Good Sam Enterprises, LLC. All Rights Reserved.