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

framelees solar panel

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

golf cart panel and controller

TO WHOM        MY GOLF CART HAS A BANK OF 8(TOTAL) 6VOLT BATTERIES, WIRED IN SERIES TO EQUAL 48 VOLTS. I...
Robert Larsen 2

Grid Tie Inverter 120v into 240v grid?

I'm confused how 120 volt grid tie inverters work with the household 240 volt grid. I know how the grid works with (2) 120 ...
Gordon DeBower 0

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

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

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

Looking for some advice on my camper setup

Hello Experts, I've tried to do my research on a solar setup for my 5x10 cargo trailer conversion camper but have come up w...
Jody Kramer 0

looking to set up for off grid living.

I would like to start setting up a cabin for off grid living and was wondering if there was anyone that could give some pointers...
Shannon Alley 3

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

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

Morningstar 10 amp charge controller overcharging?

I have been watching my voltages closely and I think my charge controller may be overcharging my battery.  I am seeing a vo...
Travis A 3

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

nabcep bogus certification hurts installers and solar

After seeing so many employers and customers requiring nabcep certification I just felt that I once again had to show how bogus ...
Tom M 0

Need help with RV charging system

I keep my RV in a building without any power.  I'd like to build a solar system that would consist of a single panel (...
William Brackman 5

Need Solar Charge Controller Recommendation- 12v system, 2x240 watt (Vmpp 30.4v)

I've got two REC 240PE(BLK)  240 watt solar panels, and I'm wanting to find the least expensive (but not junk) charge...
Eric Randall 1

New to solar, starting with a BP SX170B 24v panel...what next?

I recently acquired a BP SX170B PV panel and would love to build a stand-alone system for our camping vehicle.  170 watts is a ...
Ann Guentert 4

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

NEWBIE: Is a generator compatable with off grid solar

Hi there, Newbie question (and I suspect many more to come) Northern Minnesota location. I have a 100...
Terry LaValle 6

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

Off grid different than on grid for location

  I would like to know what people think on where to mount the panels. example- on a grid system you would always point the...
James Anspaugh 4

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