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

Xantrex C35

I have a question for anyone that has a C series controller? Does anyone use this controller in diversion mode with both solar A...
Max Schulte 7

Blocking Diode?

I am getting a Xantrex C35 and I am wondering when I hook my 60W panel to it will I be required to use a blocking diode?
Max Schulte 1

small off-grid: solar charge controller + inverter compatibility for LVD purpos?

Hi, Our non-profit helps train about, and install, renewable energy systems in remote villages in developing countries. ...
Michel Maupoux 5

"24V" PV & 12V battery charge controller?

Hi, We are getting a donation of a 215Wp panel for a small school system in Nicaragua.  That's great, but the Voc ...
Michel Maupoux 7

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

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

Sun Angle Calculator Program

Hello from a new solar power convert. I originally posted this in the general-discussion forum, but then discovered tha...
Mike Dodd 0

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

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

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

Sorry, double posted

Sorry, double posted
Neal Palmquist 0

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

Stacking DR inverter with TR inverter

Is it posible to Stack one TR 2424 inverter primary unit with one DR2424 in secondary unit?
Pascal Russell 0

48v battery bank charged by 12 v panel controller

hey Everyone, obvious Newbie here. I have 4 Kyocera 400 w panel system, still in the box. I also have 4 Deka 92AH 12v AG...
Peter Bige 2

Did I architect this right ?

I am new to altE and am very pleased with the site and the education available. I will be purchasing a new solar system and...
Peter Emmel 6

String inverters or microinverters

I'm planning on setting up a roof-mount system, in the range of 7.5-9 kW.  I am building a new garage that will be str...
Peter Hinckley 1

framelees solar panel

a customer buy frameless solar panels, anyone know how to install and where the fittings are bought
Preciado Carlos 1

solar panel output

I’m a little puzzled on this. Kyocera solar panels KC 40T is rated at 43 watts. Now you take into consideration the ra...
Ray Grose 2

Sunsaver MPPT with RM-1 remote (Morningstar)

Just bought and installed both. All is well except that the RM-1 doesn't show the actual amperage (solar Current) delivered...
Richard Dubé 2

Question about battery capacity when wired in series vs. parallel

Hello, I have 4 150 amp hour batteries. When wired in parallel, this would give me 600 amp hours at 12 volts. ...
Robert Kovalik 2

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