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

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

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

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

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

Anyone know about mppt500 controllers?

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

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

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

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

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

System design advice.

System design for off grid home. Equipment for power creation is already owned. 3 Solarworld Panels Model# Sunmodul...
David M 0

Single axis solar tracker Design

Dear all, I am student. I am doing project on single axis solar tracking application.Ihave implimented my c code from Below ...
Ajit Nayak 0

cost of 6, 8, and 11 kW installations

Hi all! I'm doing research for a blog and need to know the price of panels, inverters, and installation for 6, 8, ...
Alexander Merigan 0

What are the overall dimensions of a pair of Xantrex inverters in the diagram?

(http://www.altestore.com/descfiles/trace/inverters/xw/XW_overview.jpg) I'd like to set up dual inverters as ...
Travis M 0

Asking for your first thoughts and impressions

I don't know anybody in my circle of friends familiar with whole house power alternatives. I've discovered an interest...
Neal Palmquist 0

Solar PV water heat

Joseph, for some reason, the site would not allow me to reply to your post, so I am posting my reply in this manner.  I hav...
Jon C 0

Battery ?

I am currently upgrading my system to 24V, the question I have is should I go with 4 6V 225AH Flooded Batteries in series to get...
Tim Carroll 0

Burying PV cable?

I have #10 AWG sunlight resistant PV Wire (AltE item code PVCMC4-MF) and need to bury the 100' run to my greenhouse. All of...
Kenneth Fothergill 0

can the breakers in a Midnite Solar MNPV6 DISCO be switched individually?

Summary: Since installing the off-grid components in my garage, I've used a Midnite Solar MNPV6 to combine the PV modul...
Travis M 0

hooking up a blueplanet 3502xi

The 3502 has six DC input terminals:  hot- hot- hot return- return- return I have three DC module strings which output...
ken Dale 0

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