Technical Discussion: Solar Electric System - Photovoltaic

Share your questions and experience with others on off-grid and grid-tie solar electric systems. Our own NABCEP PV Certified installers also frequent this forum to lend a hand.

topics

Subject Started by Replies

Time to get serious designing my off-grid home solution

The first step was taking my garage / workshop off-grid.  With 4 Kyocera and 4 Mitsu 125w panels, and an Air-X wind generat...
Travis M 7

solar panel mounting

  I want to mount 3 sharp 240w solar panels on my south wall of an off grid log cabin.I have 3 on garage roof facing south ...
James Anspaugh 7

Stumped on inverter selection!

Hello all,  I'm finally ready to replace my unreliable, modified sine wave inverter with a quality unit and my numbers hav...
Adam Meredith 8

Situational System

I have a desire to get an expandable solar system started. I have quite a few issues that I think might be expensive problems. M...
Joe B 9

Battery Charging/Sizing Solar System (new to solar)

Hi all, I just got my first solar system all setup.  I bought a used 110 watt Mitsubishi solar panel and a morning sta...
Travis A 10

Using marine battery

Hello guys, I am trying to restart my system and cant afford to by the batteries that I need new now. Bought two used Rolls...
A. Hayles 10

How many pcs of the 120W solar panel do I need?

Hi, I have a project that is: System current: 14A Operating voltage: 240V Operating hr: 6hr Panel opera...
Eric Lee 12

Mixing battery sizes in one battery bank?

I have a 12V battery bank, with two 100Ah AGM batteries, and two 200Ah AGM batteries.  Is this advisable, or should they al...
Matthew E 14

newbie, here! had an oddly low state of charge

Hello, folks, Im new here.Let me give a complex rundown of my system first. pv panels: 6 =100 watt renogy monocrystalyne pan...
Adam Meredith 18

Xantrex MPPT low output problems

I've got a Xantrex MPPT charge controller (60A) in my off-grid system, and recently in the mornings as the sun rises, the o...
Matthew E 28

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