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15 thoughts on “Do cheap amazon 1kw grid tie inverters put out 1000 watts?”
  1. Avataaar/Circle Created with python_avatars Heroes and Zeros says:

    I use my 1000W inverters (2) every day between 12PM and 4PM.
    They only have an output when they sense 120V, so I use Alexa plugs and program them to turn the inverters on and off.

    The inverters start out at about 5-6Amps and taper back sometimes to less than 1A depending on how long they have been running.
    They do NOT put out the same AC amperage consistently.

    They take about 16A from the batteries/solar array each to give you 1-5A at 120VAC.
    Solar Panel output is never consistent, if the panels are putting out 8A then the other 8A is coming from the battery.

    They also trip 30A breakers daily, so I am now using 50A breakers.

    I have 4 identical lead-acid batteries in series/parallel (2 sets of 2) for 24V.
    These batteries charge from sunrise to 12PM and again from sunset to sundown from the solar arrays.

    I have 1800W of solar at 25VDC on this setup and a control relay that shuts both inverters down if the batteries are less than 12V each using an Eco-Worthy Charge Controller to monitor and control the relay.
    There is no PV input to this Charge Controller.

    When both GTI Inverters are running at the same time, they seem to start out doubling the output, then both end up declining in amperage.
    I only get 12A at 120VAC for a very short time, then it is up and down.

    You can watch the panel and inverter output amps go up and down based on a cloud passing by.

    This setup gives me about 2-12A at 120VAC for about 4 hours per day.
    I could go longer if I wanted to run my batteries down, but I don't.
    I like to keep my batteries between 12VDC and 13.8VDC (just like a car does) and run the system only when the solar arrays will power the inverters.
    It should lower my bill.

    I do have another separate array to supply power to an upright freezer and refrigerator.
    Again only running for about 4 hours per day.
    I also use an Alexa Smart Switch to turn this on and off on a schedule.
    I have a relay that reconnects the grid power automatically if I lose solar.

    Being on schedules like this is fine, but you have to still watch for cloudy days and shut them off manually or you will only be running on batteries.
    I will work on that to automate it also.

    I have designed a device to drop out panels if the total current goes above 30A so that I can over-panel for more power at sunrise and sunset.
    If the total current drops too far it adds the panels back in.

  2. Avataaar/Circle Created with python_avatars COBS: Tales From The Gold Patch says:

    Thank you very much for testing this. I've been considering a small solar setup to offset some of my current power costs and was curious to see one in action. A lot of my load is borderline resistive, or continual load such as laptops and A/C (I live far north so I just use a small ~ 1/2 ton A/C unit) and so solar with grid tie would be ideal to offset that cost. I needed to see exactly how this unit functioned under load and such and you showed every stat I needed to know. Thanks!

  3. Avataaar/Circle Created with python_avatars leilani says:

    Can you plug this inverter into any outlet in your house?

  4. Avataaar/Circle Created with python_avatars M B_A5 says:

    Good stuff Jehu. I'm looking to take advantage of the Nissan leaf sitting in my driveway if the grid power in our area should be disrupted. I've heard that you can run a 12v inverter on the car battery and if you the car in park with the power on, the traction battery (24kw) will keep the 12v car battery charged. If that works, how big of an inverter can I safely run on it and/or how big of an inverter would I need to run a refrigerator (according to the sticker inside it's rated at 8.5amps (don't know the watts)), and a second refrigerator rated at 4.5amps, and maybe a lamp or 2 for basic lighting, and if there's anything left over, maybe a smart tv (I think it's a 55").

  5. Avataaar/Circle Created with python_avatars Wrens Speed Shop says:

    Iโ€™ve got one of those grid time inverters and have four 300 Watt panels hooked to it and even then the middle of the day with the East Texas direct sun I cannot get that inverter to produce over roughly 540 -560 watts.
    Have you by chance tested the voltage of the two leads that you have connected to the inverter prior to connecting them? The reason I ask is because before I connect mine the voltage coming through the cables shows roughly 39 1/2 Volt, but as soon as I connect it to the inverter and the inverter starts running or is turned off and I put my voltage meter on both of the leads itโ€™s reading in the mid 27 Volt range. I have no clue whatโ€™s going on or why that would be, any thoughts? Nobody has

  6. Avataaar/Circle Created with python_avatars Good Enuff Garage says:

    they were probably not designed to run on carpet, lol, jk

  7. Avataaar/Circle Created with python_avatars John Schneider says:

    I am confused, explain how a 1kw inverter can power a 6kw AC even if you give a generous allowance for peak kw rating of say 2.5 kw. Que the fuse burning or copper melting.

  8. Avataaar/Circle Created with python_avatars sophocha says:

    I have a 600w version of this and I noticed that it was interfering with all my internet powerline adapters. It was making the internet connection unstable. I ended up replacing the powerline adapters with ethernet connections. So far so good. No devices blowing up. I even have a 3 phase 5kw inverter in sync with this with no issues so far.

  9. Avataaar/Circle Created with python_avatars Making Difference says:

    I just wanna ask sit. That micro inverter have limitter. ๐Ÿค”

  10. Avataaar/Circle Created with python_avatars Ryan Hamstra says:

    Is this like a computer where if it was better cooled it would run at 1000 watts longer??

  11. Avataaar/Circle Created with python_avatars Jim Akritidis says:

    Unfortunately this inverters will burn about 3 or 4 months maybe 6 months! Over heating problem!
    To avoid danage you must modified cooling fanction!This inverters start cooling by fans over +60-70 celsius!
    That inverters need install thermostat switch N.O. 40 celius stick on transformer+ dc-dc stepdown board 40V connected to fans,fans will start cooling from 40 celsius and you will avoid the overheating damage.I am technitian.

  12. Avataaar/Circle Created with python_avatars Mio Rieser says:

    Kaufen Sie sich einen Hundeschlitten mit Rรคdern. Ist umweltfreundlicher. PS Wer bei Amazon bestellt, verrรคt die lokalen Hรคndler!

  13. Avataaar/Circle Created with python_avatars Husky Life says:

    You had me at Tesla battery powered VW bus! ~Here take my money~

  14. Avataaar/Circle Created with python_avatars dMb says:

    Hi – I'm running two 120cell 32Vmp 7.92Imp 256W panels in parallel with African sun power into the 20-45V to 230Vac model but the best grid power I've monitored so far is 350W (ac). Very disappointed but hoping somebody can help. Input Voltage and current are well within spec but the units just don't generate anywhere near the power they should. The panels do deliver 500W with an ePever 3210AN MPPT controller. I can only think the Grid tie MPPT software is terrible.

  15. Avataaar/Circle Created with python_avatars TGK Productions says:

    You had me at the tesla vw bus

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