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

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

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

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

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

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

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

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

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

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

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

Raising PV panels above trees

My location in the woods creates problems for getting sunlight to PV panels.  I'm looking for advice on how best to ge...
Jerry Wenzel 2

Charge Controller for Kaneka 60W 48v Thinfilm Solar Panel

I have a off grid cabin with 4 golf cart batteries powering a 12VDC to 120VAC Xantrex 2kW inverter.  The main load is CF li...
Jerry Wenzel 5

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

parallel shunt charge controllers

what type of combiner box or ? do I need in order to run (2) ASC shunt controllers to the same battery bank?  Help please&#...
James Johnson 0

Equipment Groundiong Conductor Size?

I have a small stand alone 12v nominal system with a battery bank. What size wire do I need for the equipment grounding conducto...
James Johnson 2

parallel different types of panles is o.k.?

when hooking up multiple types of panels. IE: different Voc / Nominal. It's o.k. to mix them when they are all in Parallel?...
James Johnson 4

'hard shading' causing panel failure?

I have had a 3kw grid tied system on my house for 8 years. Two parallel strings of 9 panels on either side of a dormer to a Sunn...
James J 7

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

solar panel mounting

  I want to mount 3 sharp 240w solar panels on my south wall of an off grid log cabin.I have 3 on garage roof facing south ...
James Anspaugh 7

72 VOLT BATT ERY ARAY

I FOUND NEW BATTERY BACKUP 3000 WATT THAT IS OUTSTANDING WITH ALL THE BELLS AND I HAVE  40TY 108 AH BATTERY BANKS MADE FOR ...
Greg Moore 1

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