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

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

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

catamaran pv array

I am installing a pv array on a 21 ft Wharram catamaran. Its function is to charge batteries to power an electric outboard motor...
Stephen Broos 1

Extremely Long Run Solar Calculation

Hello Everyone! I have a small off-grid, low-amp (3-10) environment cabin, running 12v lights and charging cell phones ...
Jeff King 3

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

Sunny Boy vs Solar Edge

I'm installing an 8000 w array on my barn Pretty ideal case facing south with no shading. I'm debating Sunny Boy vs So...
Donald Edmonston 2

SMK or MC4

Hello, I'm finalizing the configuration of a new system (my first) and have a few questions regarding the connectors an...
Lion Benjamins 5

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

Real world question

I have a question about Charge Controllers and how much they can handle. I am in a position where I have increased my panel outp...
Charles Harte 2

Next to zero gains at high noon

Hello- I bought the setup for our off grid cabin and it worked great from the day we installed (last November) until about a mon...
Jessica Sullivan 2

Solar Installation Software

Hello, Please help me in finding the best software for Solar Installation Calculation with great accuracy
Lee Bella 2

Help me choose a solar charge controller please

My setup 300Ah battery bank (12V) Solar panels (18V) 300W Placement of panels not ideal but good enough. Panels are vertical...
Jing Wei 2

framelees solar panel

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

Cost for an installer to setup a 2.6kw micro inverter system for example

Can someone tell me what an installer would typically charge to install a 2.6kw full system grid tied micro inverter system on a...
Mark Immer 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

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

Array wiring

Question I have 12 Canadian solar 255 watt panels. Is it better for me to series fewer panels to increase amps, or more panels t...
Charles Harte 3

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

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

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

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