diy solar

diy solar

Recent content by justinjja

  1. J

    SC48120-MPV - Solar Assistant logging possible?

    I should have done this from the beginning, Batrium working fine with Solar Assistant + a 20$ Amazon special CanBus USB adapter, I set the batrium CanBus protocol to "Victron GX Gateway" and I'm getting real SOC and load now.
  2. J

    SC48120-MPV - Solar Assistant logging possible?

    The main thing I was worried about losing is SOC, which isn't super accurate anyway (using SA virtual bms). I'm going to look into connecting my Batrium to solar assistant for SOC instead.
  3. J

    SC48120-MPV - Solar Assistant logging possible?

    I have 3 Growatt 5000ES's hooked up to Solar Assistant currently, Just added an SC48120-MPV and wondering if it can be added? I saw someone talk about hooking it up to solar assistant, but not having any luck. There is no option for the Growatt SC's in Solar Assistant, Also tried connecting the...
  4. J

    2600 Watts Seems Wrong – Expert Help Sought

    Some panels give you NOCT which is a more realistic rating.
  5. J

    2600 Watts Seems Wrong – Expert Help Sought

    I'm pretty sure STC temp is actually the Cell temperature not ambient temp, So in the real world it basically never happens. It may be cooler outside of summer, but it's cooler because you are getting less sunlight, so still not going to hit stc.
  6. J

    2600 Watts Seems Wrong – Expert Help Sought

    I can tell you my used 295w panels only do about 2000W out of 3540W rated My new solarever 445W panels can do 2190W out of 2670W rated at the same (not ideal) angle and same (Very hot) ambient temperature In Texas.
  7. J

    2600 Watts Seems Wrong – Expert Help Sought

    I might have missed it, where are you in the world?
  8. J

    Polarity of EATON 250Vdc shunt trip breaker

    Thanks, It's a little weird because a battery is both a load and a power source. Have to treat it as a power source because the inverter output is limited by other means, While the battery will dump a ton of amps if something goes wrong. None of them quite match what I'm doing, but they all...
  9. J

    TE Connectivity contactor getting stuck?

    I say no precharge, but I always power up the inverters from the grid first and then connect the batteries. Assuming it's not a bad reading the growatt says the battery is sitting in the low 40v's after powered on without a battery. I should check that with a DMM the next time I'm down for...
  10. J

    Polarity of EATON 250Vdc shunt trip breaker

    I have a couple Eaton HFD2125 125A breakers but can't find the datasheet. Does anyone know if polarity matters on this style of breaker? Like should my battery (+) be connected to the top or the bottom of the breaker? I vaguely recall reading that these big breakers have a magnet to force the...
  11. J

    TE Connectivity contactor getting stuck?

    No precharging but it's a high frequency inverter (Pair of growatt 5000ES) At full load after inverter efficiencies I'm going to be under 250A. I don't think contact welding makes sense because once I break it free it will happily connect/disconnect the load. Only after sitting for a month does...
  12. J

    TE Connectivity contactor getting stuck?

    I've noticed that my "LEV200A4ANA" will get suck closed/on after a while. A few times when I tried to manually turn it off after about a month of being on it won't turn off. I can get it unstuck by turning it on and off several times, but that defeats the purpose of it. Is it a known thing that...
  13. J

    New Growatt ES5000 safety issue?

    It’s possible to pass AC without shorting DC, just takes a capacitor. And it’s highly likely to design a dc solar input with a capacitor across + and - if you think about it. If you have one, all I did was measure AC voltage from the inverter case(earth gnd) to solar + and solar -, both show...
  14. J

    New Growatt ES5000 safety issue?

    Maybe I just missed it when all the other Growatt safety stuff was going down last month, But I just noticed something I wasn't expecting with my Growatt ES 5000(USA) I believe this is an artifact of originally being an EU design. Both the Solar panel + and - inputs are connected directly to...
  15. J

    Growatt 5000es - Simple protection from lost neutral?

    My understanding is in the USA you only have 1 panel in a house with a ground - neutral bond. All other panels must keep gnd and neutral separate for the ground to work. This is done for the sake of the gnd, not the neutral.
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