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  1. k490

    GoodWe Hybrid 14KW Solar / Tesla Model 3,Y Battery Module 225KWH ESS

    I probably could do that with lifepo4 battery not a nickel battery don't have the room being in a tract home.
  2. k490

    GoodWe Hybrid 14KW Solar / Tesla Model 3,Y Battery Module 225KWH ESS

    Just have to make sure never have a fire who knows if home owners insurance will cover a non UL non permitted battery. IT gets so hot here batteries don't do well outside in the summer without AC cooling.
  3. k490

    GoodWe Hybrid 14KW Solar / Tesla Model 3,Y Battery Module 225KWH ESS

    How were you able to get the AHJ to sign off on non UL listed DIY batteries? This is probably the most difficult problem with DIY solar forced to buy very expensive UL listed batteries. My utility even requires it to be California certified which is even a step above UL I'm in Arizona.
  4. k490

    Minor Backfeed Issue with Utility

    Doesn't make any sense because many people use generator transfer switches like Reliance controls box which are UL listed for that purpose. When anyone test runs their generator the utility would claim they were back feeding.
  5. k490

    New Here - Audacious Plans Afoot - 8000kWh System Coming Soon

    That's lot of power probably going to need at least 100 450W panels and multiple inverters in parallel. Look up in your area see how large of a battery system your AHJ allows on the property. I noticed mine only allows 81kw max for residential which is about 5 EG4 power pros. Although I only...
  6. k490

    New Here - Audacious Plans Afoot - 8000kWh System Coming Soon

    Your pulling 8kwh not 8000 KWH a day I thought I was reading that wrong you could say 8000 Watt hours. I'm in Phoenix Last year Jul-Aug we went 117F-119F for 30 straight days. The peak power load in one day was on July 22 168KWH. My 4 ton roof top heat pump unit ran for hours non-stop I was...
  7. k490

    Thermal Runaway / Fire / Newbie fears and questions...please take it easy on me!

    I got all the steel shear cut by the steel supply nothing to cut they are able to make perfect cuts with the shear cutting machine all I need to do is weld it together. Since I already have a Mig welder not a problem for me the total cost was $216 including all the cuts and steel. You can hire...
  8. k490

    Thermal Runaway / Fire / Newbie fears and questions...please take it easy on me!

    I bought 11G steel from local steel supply when my battery box is done it will weigh almost 300 lbs before putting the batteries in. Also have a 4" vent pipe goes out through a solid block wall. If it didn't get so hot here in Phoenix I would put the batteries outside in a steel box. I was...
  9. k490

    Solar nightmare

    There lot of scammer solar companies who are not really even selling solar they are selling a loan they hire a local company to install. I would hire an attorney see what your options are. You want to at least get some legal advice who knows what they sold you. Neighbor got scammed by door to...
  10. k490

    Feedback wanted on a proposed large residential system

    If the shunt, or fuse holder is made out of flammable material like plastic it can catch fire if it has a hot spot. I suppose that could even happen with a hot spot on a battery terminal. When you have low voltage and high currents hot spots are a problem. Lifepo4 has flammable liquids once it...
  11. k490

    Lead Acid explosion

    My brother when he was a teenager used a lighter at night to check the battery fluid level on a car battery hydrogen sulfide gas exploded in his face. His face got a bad sun burn his hair was burnt some he was lucky the gas was probably not enough to do more damage. Not sure how his eyes didn't...
  12. k490

    House burned down

    This is why my batteries will be enclosed in steel with 1/4" plate steel on top. Haven't had time to weld it together yet been busy with other projects soon it will be built. The box will weigh 250lbs itself I have casters already roll it around my garage. The only thing that keep this from...
  13. k490

    Feedback wanted on a proposed large residential system

    You will want solar panel disconnects don't use circuit breakers. If you disconnect under heavy load DC arc will not break and melt the thing. Lot of YT videos on that subject. Make sure you buy a quality shunt there is a thread in up in smoke guy burned up his DIY battery bank from a shunt that...
  14. k490

    Micro-Air soft-start 15% off sale till 5/15

    Discount code SPRING24 https://mailchi.mp/2beac7676f4e/micro-air-2024-spring-sale-easystart-easytouch-rv-13708732?e=0dc7d086b3
  15. k490

    High cost vs low cost fuses

    Depends on the risk you want to take if your battery bank is inside a shed outside take little more risk on a cheaper fuse. If it's inside your home, or in an expensive RV last thing you want is to a fire because you wanted to save $40. I try to go with everything that is UL listed then I know...
  16. k490

    Tesla Solar doesn't honor their warranty.

    Your adding a battery to your current grid tied system you be required to sign a new interconnect agreement, and lose the grandfathering. Also be required to add 2 more meters that is if you plan on permitting it. I'm just taking a few circuits going off-grid for battery backup I don't plan on...
  17. k490

    Minor Backfeed Issue with Utility

    Wonder about 110V inductive loads like window AC units would do this?
  18. k490

    How to prevent backfeed?

    Did they connect to a different location because of the easement issues? Usually they can force a land owner to give easement if they don't agree to it by emanate domain. Even private power utilities can do this because of laws allow them to they have to go to court. It's a long process most...
  19. k490

    Minor Backfeed Issue with Utility

    He has an air gapped manual switch on the grid connection to the inverter it was shut off when they said it was back feeding. The only thing could have done it was through the neutral, or inductance between wires that were close together. I have wondered about this is have an inverter sharing a...
  20. k490

    Export Limit Lock is now available on EG4 18kpv

    SRP Taking away from their profits which they claim they not suppose to be making any profit.
  21. k490

    Minor Backfeed Issue with Utility

    The problem is the only way you know is when you get a call from the utility I'm assuming rather not get calls from them. Maybe it happens lot more then we know lot of people have portable battery stations any of those could back feed somehow.
  22. k490

    Minor Backfeed Issue with Utility

    I went back and read that I edited my original post about the manual switch you have. I think the hybrids just a power circuit between the input and output. Possible induction how it happened. UL listed reliance control generator transfer switch going could induce voltage on the line side all...
  23. k490

    Minor Backfeed Issue with Utility

    xantrex xw6048 isn't that a hybrid inverter? Likely the power just coming from that. You should be able to see the inverter voltage spike up with an oscilloscope, or maybe a DVM that records max voltage. Watch what is causing the voltage to go higher then the grid voltage. You said the grid...
  24. k490

    Minor Backfeed Issue with Utility

    I'm no inverter expert but speculating the way these are designed hybrid VS Off-grid the hybrid always going have a parallel path with some kind of power circuit between the input side, and output side. Where the off grid has air gapped relays that direct power to the battery charger, or bypass...
  25. k490

    Looking for local help installing EG4 hybrid with batteries to my 26kw grid tied solar system. Anybody here in the Phoenix area?

    That's exactly what I'm going to do off grid through a transfer switch with 6000xp I have one already working on installing. The only issue is cooling it because it gets so hot here in the summer my garage hits 95F in July and Aug have to see how hot it gets probably have to cut back the power...
  26. k490

    Tesla Solar doesn't honor their warranty.

    I don't plan on mounting panels on my roof wife doesn't like the look of solar on the roof also if you ever want to remove it going to leave big mess on the shingles with black marks all over the roof from the sealant. That means entire roof has to be re-shingled I got it done in 2012 for 4500 I...
  27. k490

    Looking for local help installing EG4 hybrid with batteries to my 26kw grid tied solar system. Anybody here in the Phoenix area?

    SRP like APS requires all the equipment to be on the CEC list (California approved). The good thing is EG4 18 and Powerpro battery just got approved on the CEC list. You have to get a new design plan go to greenlancer get plans drawn up. I would probalby ditch the current GT inverters and get...
  28. k490

    NAZ Solar Electric 5% off until 4/12

    Code is ECLIPSE5 Link
  29. k490

    Tesla Solar doesn't honor their warranty.

    Leasing solar is a bad idea stuck with that company forever just one downside. Sounds like your DIY fix resolved it IMO I would just treat it as your own system and support it yourself who would know any different. My utility has been increasing solar connect fees, and reducing the rate they...
  30. k490

    Climate change, COVID, and other things...

    I'm simply stating that you benefitted by Government subsidizing and giving tax breaks to the solar industry. The reason Government has done that is because of Climate change even if you don't believe in it. Did you file on your tax's 30% credit for your solar system?
  31. k490

    Climate change, COVID, and other things...

    You realize that if it wasn't for climate change solar panels would cost $20 a watt probably not even exist like it does today. Industry not going to invest millions of R&D into an something that has no future. Government jump started the industry by subsidizing it and EV cars because of climate...
  32. k490

    Flexible solar panels on a travel trailer

    Video of flexible panels melted the RV roof.
  33. k490

    Trump

    What's wrong with turkey legs and Christmas. Have to admit Trump would have been much better off if he never got involved in politics. He probably have a new TV show by now. He might not say it publicly I do believe he wished never got involved in it.
  34. k490

    Aluminum wire house hanging speakers drilled through a 10/3 wire feeding two outlets

    15 feet of 10/3 is $100 at HD that is crazy pricing. Going to buy 250 feet of 12/2 for $100 shorter pay over $2.50 a foot. I found a 250 foot roll of 14/2 in the attic I must have bought years ago probably paid $29 for it. I haven't had issues with rats we do have roof rats here seen them...
  35. k490

    Aluminum wire house hanging speakers drilled through a 10/3 wire feeding two outlets

    House was built in 1976 bicentennial year. I remember celebrating Bicentennial in school was 8 years old when my house was built. Builders trying to penny pinch as usual. The house is slump block home with 2 flat roofs and a pitched roof in the middle. Almost every home built here in the 70's...
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