Two inverters?

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• westbranch Solar Expert Posts: 5,183 ✭✭✭✭

  November 2017 #2

  I have my place wired into 2panels,  the large Inverter will be for the well pump, and washer /dryer when we get them in place... right now the 1500W inverter runs everything else. Idea is to have minimal draw on the batteries in winter
  

   
  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
  

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• mcgivor Solar Expert Posts: 3,665 ✭✭✭✭✭✭

  November 2017 #3

  Being mobile it makes sense to use a smaller inverter for overnight loads, the self consumption adds up quickly, limited battery and charging real estate are reasons to go that route.

  1500W, 6× Schutten 250W Poly panels , Schneider MPPT 60 150 CC, Schneider SW 2524 inverter, 400Ah LFP 24V nominal battery with Battery Bodyguard BMS 
  Second system 1890W  3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah LFP 24V nominal battery with Daly BMS, used for water pumping and day time air conditioning.  
  5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.

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• Estragon Registered Users Posts: 4,482 ✭✭✭✭✭

  November 2017 #4

  I run a small (300w 12v) PSW inverter at night for lights, radio, etc. It will even run pumps for infloor radiant heating. In daytime I run a pair of 3500w Outbacks in a master/slave stack for water/septic pumps, tools, etc. Coffee is propane stove and french press, but toast is electric now :-)

  Off-grid.  
  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

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• mike95490 Solar Expert Posts: 9,186 ✭✭✭✭✭

  November 2017 #5

  I don't run 2 inverters, but it was a definite consideration.  Going really crazy, I wonder if I could stack 2 inverters, a 300W and pair it with my XW - which might be adjustable enough for Grid Assist (since it will do generator assist)  I don't know if it will "sleep" enough to be worthwhile.  So I just upsized, rather than deal with potential failures and unhappy wife
  

  Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
  || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
  || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
  
  solar: http://tinyurl.com/LMR-Solar
  gen: http://tinyurl.com/LMR-Lister ,
  
  

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• 706jim Solar Expert Posts: 397 ✭✭✭✭

  November 2017 #6

  I'm still considering this for my summer camp. My "big" inverter (1500 watts) to run everything but the fridge and a 3-600 watt psw for that load alone. So far the fridge has not complained about msw power after two months of continuous operation.

  Island cottage solar system with 2400 watts of panels, 1kw facing southeast 1kw facing southwest 400watt ancient Arco's facing south.Trace DR1524 MSW inverter, Outback Flexmax 80 MPPT charge controller 8 Trojan L16's. Insignia 11.5 cubic foot electric fridge. My 27th year.

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• grizzzman Registered Users Posts: 18 ✭✭

  November 2017 #7

  Thanks for your thoughts all. I think I will setup two inverters. Looks like it's contactor time.

  Boondocking is my game
  640 Watts Mono Bogart TM2030 and SC2030  Controller GC 6V 208 AH  Costco batteries  300 Watt Inverter and 2000 watt inverter 100AH LIFEPO4 2P4S

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