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

Solar Pond Diffuser Project

I have supplies that I am trying to hook up to make a diffuser system for a small pond. We currently have: 4 - 85 ...
Carrie G 1

Mixing panels in series

I know that in a series circuit that the curent throught the circuit will always be the same through through all connected panel...
John Anderson 1

Old Cut sheets/spec sheets

I 'm a solar installer in Tucson and i'm looking for cut/spec sheets for Evergreen DC-110 Modules,  Any info will...
Mike Eisele 1

Please critique my system

I would like to power 8 LED lights, 15 watts each. could someone please critique my system and tell me if the wiring is correct?...
Nick van Dijk 1

C-35 controller and Battery

So I need the forums opinion. I have a C-35 controller that I am using as a diversion controller And a 60W 12V panel feeding a s...
Max Schulte 1

Anyone know about mppt500 controllers?

Posted a lot of info.  about my system.  Just need help selecting controller. Thanks LJ
Lj Gwen 1

strange phenomena is PV output

Hi, I have 16 sunpower 318 panels connected to sma smc5000a (inTL) inverter (2 strings of 8 panels each). Each panel has...
Yonatan Yonatan 1

Amount of PV panels seems high for proposed battery backup?

Hey all, So following the mess that all the storms hitting the North East have made of the power grid these last few months,...
Mike Chizhov 1

PWM or MPPT for a Uni-Solar thin film with Vmp=16.2V ?

Hi, I want to build a 12V system with thin film flexible panels, which have Vmp=16.2V. It will be installed in an area havin...
Gabriel Cravchik 1

What does NEC say about parallel PV feeder cables?

I'm installing 14 290W Suntech PV panels 200' from the equipment room. The panels will be wired as seven series-pairs,...
Mike Dodd 1

Equalize Charge Using Direct Panel to Battery Connection

I decided that I wanted to equalize my battery today.  After doing some research about what voltage to do it at I decided t...
Travis A 1

reduced panel output

After a recent move I was reinstalling my small off grid system that provides power to a small workshop.  I found that one ...
Robert Williams 1

Combining Systems

I've got a Xantrex 6048 selling power back to the grid at a point I'll refer to as  the  T.  The 6048 sends power i...
Jon W 1

disimilar ah of batteries in serries

I have imported 24 2v 1000ah agm cells from china but when I unpacked them I found I had 12 1000 ah cells and 12 1200ah cells am...
Stephen Smith 1

Mounting panels to the roof

I have purchased an IronRidge solar panel mounting system to mount 33 280 watt panels to a metal roof. The plan is to use Iron R...
Robert Sorensen 1

ac-coupling

This spring we'll begin the first steps of setting up our PV system. Move the meter from the house to the yard, re...
Scott Hucker 1

Two different sized batteries off one panel

Greetings, I have a situation where I have a 180w panel which was given to me because it was broken.  I've made it...
Nathan D 1

72 VOLT BATT ERY ARAY

I FOUND NEW BATTERY BACKUP 3000 WATT THAT IS OUTSTANDING WITH ALL THE BELLS AND I HAVE  40TY 108 AH BATTERY BANKS MADE FOR ...
Greg Moore 1

Blue Sky Sun Charger 30 bulk mode charging voltage

Hi all, I recently installed a small solar system in my RV consisting of a 105W solar panel mounted on the roof, a Blue...
Brad Schempf 1

Replacements for Solarex MSX-60

I have MSX-60 panels that are 19.75" wide and 43.63" tall.  Does anyone know of a direct replacement for these?&n...
Steve Homan 1

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