400 sq ft weekender cabin, off grid, designed for cooling



  • EstragonEstragon Registered Users Posts: 4,494 ✭✭✭✭✭
    I'd run the generator at 120v to both, unless you have 240v loads.  

    The generator wouldn't be loaded that much, so not a big deal, but running 240 limits capacity to 1/2 per leg, and could be an issue if one leg was loaded much more than the other.

    I have mine wired for 120v even though I now have a 240v pump.  I figured it was better to use an autoformer for the pump rather than deal with the leg load issues.
    Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
    Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
  • Mike 870Mike 870 Registered Users Posts: 42 ✭✭✭
    Here is my final video with shoutout to NAWS at the end.  My system isn't really done but I want to move on to other topics as far as the videos are concerned.

  • MrM1MrM1 Registered Users Posts: 487 ✭✭✭✭
    Very Cool.  Great Video and set up. 
    REC TwinPeak 2 285W 3S-3P 2.6kW-STC / 1.9kW-NMOT Array / MN Solar Classic 150 / 2017 Conext SW 4024 Inverter latest firmware / OB PSX-240 Autotransfomer for load balancing / Trojan L16H-AC 435Ah bank 4S connected to Inverter with 7' of 4/0 cable / 24 volt system / Grid-Assist or Backup Solar Generator System Powering 3200Whs Daily / System went Online Oct 2017 / System, Pics and Discussion
  • Mike 870Mike 870 Registered Users Posts: 42 ✭✭✭
    Thanks Mr. M1
  • Mike 870Mike 870 Registered Users Posts: 42 ✭✭✭
    I expanded my system with stuff mostly purchased from NAWS.  I added a East and West facing array each on a new charge controller.  Still a slow work in progress but getting there.  Cabin is coming along slowly and steadily.

  • softdownsoftdown Solar Expert Posts: 3,497 ✭✭✭✭
    You sound pretty darned experienced while talking.
    First Bank:16 180 watt Grape Solar with  FM80 controller and 3648 Inverter....Fullriver 8D AGM solar batteries. Second Bank/MacGyver Special: 10 165(?) watt BP Solar with Renogy MPPT 40A controller/ and Xantrex C-35 PWM controller/ and Morningstar PWM controller...Cotek 24V PSW inverter....forklift and diesel locomotive batteries
  • Mike 870Mike 870 Registered Users Posts: 42 ✭✭✭
    Ha ha, well I try my best.  I've done a couple RV installs in addition to this.   Most of what I know I learned from reading stuff here...
  • westbranchwestbranch Solar Expert Posts: 5,183 ✭✭✭✭
    If you can get at them, taking a few of those shade creating branches that is, you will get a lot more  output for your batteries. The shade of even a small Aspen branch can cut production by 50% or more...  have fun.
    KID #51B  4s 140W to 24V 900Ah C&D AGM
    CL#29032 FW 2126/ 2073/ 2133 175A E-Panel WBjr, 3 x 4s 140W to 24V 900Ah C&D AGM 
    Cotek ST1500W 24V Inverter,OmniCharge 3024,
    2 x Cisco WRT54GL i/c DD-WRT Rtr & Bridge,
    Eu3/2/1000i Gens, 1680W & E-Panel/WBjr to come, CL #647 asleep
    West Chilcotin, BC, Canada
  • cjpetriecjpetrie Registered Users Posts: 4
    This is one reason I built a ramada for solar and rain water collection first and put the house in later. https://www.lulu.com/en/us/shop/charles-petrie/ten-years-off-grid/paperback/product-1dgpvmym.html
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