2 systems to decide from

Zakarume
Zakarume Solar Expert Posts: 143 ✭✭
in Solar Beginners Corner #1
Hello again. I have been looking and deciding between different items and brought it up through this forum a couple of times and with help with another member here. I kinda narrowed it down to 2 systems. 1 is a 12 volt and other is 24 volt. I will be using it about 4 hours a day at 500 watts per hour. The batteries are 12 volt 27m series. I live in a Trailer Park and have a Metal Roof. I cant put anything into the ground and I DO NOT WANT TO DRILL HOLES IN ROOF. Here is what i decide so far

12 volt system

1 4 x http://www.renogy-store.com/100watts-bendable-panel-p/rng-100db.htm. Sealed to roof

2. http://gpelectric.com/products/30-amp-digital-solar-controller

3. http://www.amazon.com/Xantrex-Prowatt-SW1000-Sinewave-Inverter/dp/B002I04A74


24 Volt System

1. 3 x http://www.soldonweb.com/144-watt-Enhanced-PVL-Solar-Panel-Laminate-Peel-Stick_p_155.html

2. http://www.solar-electric.com/midnite-solar-kid-mppt-solar-charge-controller.html?gclid=CPmOodntmMECFRMaaQodCpwAtg

3. http://www.amazon.com/Xantrex-Prowatt-SW1000-Sinewave-Inverter/dp/B002I04A74
1460 Watts Solar @24v. 675 AH Battery Bank using 12 6v Trojan T-105. 1 Midnite Classic 150. 1500 Watt 24v Samlex Pure Sine Inverter
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Comments

  • Photowhit
    Photowhit Solar Expert Posts: 6,011 ✭✭✭✭✭
    #2
    Re: 2 systems to decide from

    Well you have a couple problems with the 24 volt system, The inverter spec'd is a 12 volt inverter, and the panels have a VMP of 33, which might be a little low to run 3 in parallel for a 24 volt system, and you can't run them 2 in series, you could run them 3 in series, but you increase the waste a bit....
    Home system 4000 watt (Evergreen) array standing, with 2 Midnite Classic Lites,  Midnite E-panel, Magnum MS4024, Prosine 1800(now backup) and Exeltech 1100(former backup...lol), 660 ah 24v Forklift battery(now 10 years old). Off grid for 20 years (if I include 8 months on a bicycle).
    - Assorted other systems, pieces and to many panels in the closet to not do more projects.
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  • Zakarume
    Zakarume Solar Expert Posts: 143 ✭✭
    #3
    Re: 2 systems to decide from

    Didnt see that that about the inverter being only 12v. However just found this http://www.amazon.com/Go-Power-GP-SW1000-24-1000-Watt-Inverter/dp/B00153BE10/ref=sr_1_20?s=lawn-garden&ie=UTF8&qid=1412634667&sr=1-20
    1460 Watts Solar @24v. 675 AH Battery Bank using 12 6v Trojan T-105. 1 Midnite Classic 150. 1500 Watt 24v Samlex Pure Sine Inverter
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  • Plowman
    Plowman Solar Expert Posts: 203 ✭✭✭✭✭
    #4
    Re: 2 systems to decide from

    Of those options, I'd go either 12V or 24V (depending on distance between panels and CC) and buy:

    --4 Renogy 100W panels (the other panels are amorphous, which is less than ideal)

    --Midnite Kid charge controller (of the two, the Kid is vastly superior)

    --Inverter, the Xantrex looks good for 12V, for 24V I'd consider a Samlex, though I have no experience with them

    Type 27 battery as far as I can tell is a Marine/RV type, 105 Ah each? How many? If you haven't already bought them, I would avoid these and get true deep cycle batteries.

    For mounting, I put my panels on a small cargo trailer, in which live the batteries, controller, inverter, generator, etc. That way I take my little solar electric system with me when I move.

    15464433152_7a8c13ef43_z.jpg
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