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

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

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

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

Situational System

I have a desire to get an expandable solar system started. I have quite a few issues that I think might be expensive problems. M...
Joe B 9

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

Should I wire solar panels in series or parallel?

So if I have 2 identical KD135SX-UPU panels (17.7v Max Power, 22.1v Open Circuit) and I’m charging a 12v battery bank (4 @ 6v,...
John Kozell 5

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

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

xantrex MPPT 60-150 wrong connected

Hi, I have a problem with my Xantrex MPPT charge controller.   I set the charge controller with two panels and four...
Joost Wilterdink 0

outcome of voltage in series and amp/h

 I'd like to know the result  connecting  batteries with different voltage(V) and different currents(AH) in series L...
Kay Andy 5

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

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

Solar Installation Software

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

Battery not charging - defective charger or depleted battery?

Hello I have a small solar panel I use to charge a battery to power a water pump. -30W solar panel -Morningstar...
Leonardo Chen 4

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

Should I use a mppt500 or mppt500hv ?

I am building a small off grid system using two 230 watt panels. They are 34 volts open 8 amps each, BP 3230T. I can wire th...
Lj Gwen 3

Anyone know about mppt500 controllers?

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

ad hoc starter kit for greenhouse

sunlinq 62w p3 panel system with the xantrex 1500 rolling battery (with AltE recommended accessories) ~$1400 does t...
Lyn Ciampa 3

Solar charger controller question??

Hi Guys, I have 840watts off solar panels, and 25 12v 72a/h deep cycle batteries, and I'm wandering if my solars w...
Marcin Rzeszotko 6

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

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