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Thread: Which inverter for 12V??

  1. #1
    Join Date
    Apr 2012
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    Van Horn, TX (West TX)
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    611

    Question Which inverter for 12V??

    I am looking at:

    Xantrex Pro SW1000 Sine Inverter $250-270
    Display Number Meter, 1 Double GFI outlet, 0.6amp draw

    Ramsond Sunray 1500 Sine Inverter $260
    Display Bar Meter, 3 15 Amp Outlets, 1 year warranty <1amp draw

    PowerBright APS1000-12 Sine Inverter $270-290
    LED indictators, 2 outlets, 1 year warranty.. <1amp draw

    I'd like to get as much WATTS out as I can and do this once.. I have a budget of like $275 on this..

    I'd prefer a SINE inverter..

    I noticed the SAMLEX models.. but the casings look like the PowerBrite ones..

    What do you folks recommend or would you say use 2 inverters??

    1 HI-OUTPUT Modified Sine and 1-300 Watt Pure Sine??
    Last edited by ywhic; May 4th, 2012 at 4:38 PDT.
    Al Z.
    1160 watts PV, 30.86 & -104.792, MidNite Classic 150, Xantrex Pro SW 2000, TS 30 Transfer Switch

  2. #2
    Join Date
    Jun 2007
    Location
    Williams Lake, BC
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    Default Re: Which inverter for 12V??

    check out Cotek , they make some Samlex models
    100% Off Grid @ 51* 46' N lat 124* 44' W long

    New House system: coming - 2 arrays @ 2240W
    CL150&Epanel 2 @140 W 12v PVs , 24V C&D AT-15P AGM @ 950Ah
    + CL150 2@120W 12 V panels, 24V C&D AT-15P AGM @ 950Ah
    Cotek ST1500W inverter, TBS 30a-24v Omni-charger, Honda Eu3000is,

    Guest cabin system: 3 - 70W panels to SB 2000e CC, with 2 - 100 ah 12v SAFT wet NiCd's , 600W TSW Inverter

  3. #3
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    Apr 2012
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    Van Horn, TX (West TX)
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    Default Re: Which inverter for 12V??

    Quote Originally Posted by westbranch View Post
    check out Cotek , they make some Samlex models
    They have the similar item.. Dual GFI outlets.. its just one GFI outlet.. (and one rest button for both outlets)..

    I'd prefer at least 2 separate(d) outlets..

    The Samlex SSW-350-12A looks good.. (pic shows 2 outlets)..

    and the Samlex SSw-600-12A also..
    Al Z.
    1160 watts PV, 30.86 & -104.792, MidNite Classic 150, Xantrex Pro SW 2000, TS 30 Transfer Switch

  4. #4
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    Van Horn, TX (West TX)
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    Default Re: Which inverter for 12V??

    Maybe a Xantrex Pro SW600 Pure Sine $160 would be better, and then a normal modified sine larger wattage inverter for normal wiring??

    Maybe a Whislter Pro-1600W for $120... use that for non-essential devises.. and the pure sine Xantrex for computer and TV??

    Anyone have suggestions on which way to go?? or should I just stick with the Xantrex Pro SW1000 (Pure Sine)??
    (Or upgrade my order to the Ramsond 1500/3000 Pure Sine $260??)
    Al Z.
    1160 watts PV, 30.86 & -104.792, MidNite Classic 150, Xantrex Pro SW 2000, TS 30 Transfer Switch

  5. #5
    Join Date
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    Quetico, Ontario
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    Default Re: Which inverter for 12V??

    Suresine 300, true sine wave inverter. Very efficient, will surge to ~600 watts for a long time. Off grid the is seldom much use for a really large inverter.

    Tony
    Please note, being a moderator does not add any weight to my opinions 300 watts Siemens/BP panels,plus a Sun 90,, making ~400. ~30 amps into Rogue MPT-3024, 450 ah of Trojan T-105, Morningstar ts300 inverter, a Tri-Metric meter.a collection of antique generators, plus 2 Honda eu-1000i's (also a BS2512 IX controller) and assorted other stuff!

  6. #6
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    Default Re: Which inverter for 12V??

    Quote Originally Posted by icarus View Post
    Suresine 300, true sine wave inverter. Very efficient, will surge to ~600 watts for a long time. Off grid the is seldom much use for a really large inverter.

    Tony
    I understand.. but I have a 12x24 cabin that I need to have enough JUICE to get around it.. if needed..

    I am totally off grid by 8 miles.. so I need (I feel) some power to run maybe a small dorm fridge (on timer).. maybe a small 4500 BTU A/C for a few hours.. I plan on running CEL or CFL bulbs.. and only a laptop otherwise..
    Al Z.
    1160 watts PV, 30.86 & -104.792, MidNite Classic 150, Xantrex Pro SW 2000, TS 30 Transfer Switch

  7. #7

    Default Re: Which inverter for 12V??

    Quote Originally Posted by ywhic View Post
    I understand.. but I have a 12x24 cabin that I need to have enough JUICE to get around it.. if needed..

    I am totally off grid by 8 miles.. so I need (I feel) some power to run maybe a small dorm fridge (on timer).. maybe a small 4500 BTU A/C for a few hours.. I plan on running CEL or CFL bulbs.. and only a laptop otherwise..
    Okay, I don't know what the size of the cabin has to do with the size of the inverter. Our cabin is 30 x 40 and the inverter output averages less than 200 Watts. The only reason I have a big inverter is because of the necessary water pumps; if everything comes on at once the surge demand is wicked.

    Small dorm 'frige and small A/C unit are both power-sucking monsters that will require far more system than you've got. They'd shut down even the largest inverter on your choice list.
    1220 Watts of PV, OB MX60, 232 Amp hrs, OB 3524, Honda eu2000.

    Ohm's Law: Amps = Volts / Ohms
    Power Formula: Watts = Volts * Amps

  8. #8
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    Default Re: Which inverter for 12V??

    How do the folks online start there 5000 BTU with a 2500 Watt inverter??

    I know the surge is like 1200 watts.. And I know it will kill the 'bank' quick..

    But if I can get a new low EER A/C started on LOW fan, then switch to LOW AIR.. thats all I would want.. and its like 550 watt once its running..

    I figured a large (and good quality with .6 amp draw) Xantrex SW Pro 1000 would be a good 1x & 1st choice..

    The Morningstar SureSine 300 is appealing and the price of $215 (or so) is great.. and it hooks right to 110V panel and such..

    I'd rather have EXCESS on-tap if needed though..

    Before I even try an A/C I will get a 440ah battery bank.. intially I will be at a 225ah bank..

    Another person suggested a $200 2500W 'stackable' and said they've use theirs for over a year thus far with 0 issues..

    I just want to do it once and correct..

    FWIW.. My cabin will become my fulltime home.. so its just not a weekend thing either..
    Al Z.
    1160 watts PV, 30.86 & -104.792, MidNite Classic 150, Xantrex Pro SW 2000, TS 30 Transfer Switch

  9. #9

    Default Re: Which inverter for 12V??

    Of the inverters mentioned I can only speak to the Xantrex, Samlex, and Morningstar as being good choices. I've never heard of the others, much less have any experience with them.

    Different inverters have different surge characteristics, not just ratings. For instance the smaller Samlex units actually are not recommended for motors because they have basically zero surge capacity. Other inverters will have ratings 2X the run Wattage, but might be for very short period of time. In rare instances you may actually get the manufacturer to provide accurate info which may show a declining surge rate available over time.

    I'd suggest you go with a quality small inverter, and save up your money. When it comes time you can add a second, larger inverter to run the refrigeration equipment when you can afford it. This second inverter can either be connected to the common (expanded) battery bank or possibly a whole new system constructed for high-current loads (preferably using 24 Volts instead of 12).

    One thing about buying off-brand inverters: if it fails, will the company still be there to warrant and service it?
    1220 Watts of PV, OB MX60, 232 Amp hrs, OB 3524, Honda eu2000.

    Ohm's Law: Amps = Volts / Ohms
    Power Formula: Watts = Volts * Amps

  10. #10
    Join Date
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    Location
    Western MA
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    Default Re: Which inverter for 12V??

    I vote for the Xantrex but only because I have the 2000 watt version of it and I like it. I don't have any experience with the other brands.

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