diy solar

diy solar

Recent content by HammaMan

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    Simple modular UPS

    How often does this occur? You can use a standard UPS for this with a much larger battery. The only downfall is the long recharge time. A common thing I'd do for over a decade is to get a large 12v or 24v UPS and then use a car battery on it. You'd have to look at float voltages to see if...
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    100+a 12v BMS with programable heater - Options?

    I'm looking for options on 100+ amp 12v BMS that's got heating capability and other options. I haven't been too impressed with what I've found. Any suggestions, or possibly a manufacturer that could tailor one to my needs? Thanks guys
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    WOW -- Ultimate boat config on sailing yacht

    This setup is beautifully done! 48v victron system w/ 2 hybrid motor generators + diesel motor. 120v 60hz and 230v 50hz inverters and chargers for universal shore power connection.
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    48V battery short circuit damage?

    The battery likely didn't even notice. The bolts / other hardware I'd bet is missing some metal. With a quick short like that, the metal turned to plasma rather quickly. Here's a paper with more info than you'd ever think to ask...
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    REPT 280Ah grade B from 18650Batterystore test result

    Pics of batts in 4pk boxes and BMSs in non-descript boxes with random other part boxes laying around? These boxes are as plain and bland as any other :D The MME is, well it's the MME. Most vids on the GTPE are what it is. I beat on it pretty good, it doesn't complain. 18650 is half a mile...
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    REPT 280Ah grade B from 18650Batterystore test result

    I drove to 18650 and filled up the mach e full of cells -- still haven't gotten around to using everything I picked up. Picked up all sorts of stuff, haven't played with any of it yet. Going to start tonight.
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    Stray voltage on the system -- re: YT vid.

    Hey @Will Prowse I think it's time you come up with an SOP for trying out new products. Unlike AC which will zzzap you, HVDC can cause your muscles to contract forcing you into the electrocution hazard and you're toast. Glad to see you're still around after that, that could have been really...
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    REPT 280Ah grade B from 18650Batterystore test result

    The problem with this is you just have no idea what the cells have already been through. Coming from china, they'll sell grade B as "A NEW" -- no telling what grade Bs actually are. Just too many variables. Reputable supplier w/ ease of swap if there's an issue is the way to go. You'll get...
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    How do DIY folks deal with NEC 690.4 (C) - Qualified Persons Only

    With the political nonsense of the late 20teens, I was making memes that others were getting account locks for sharing (FB). If accounts were numbered sequentially, mine would be right around the 10k mark (as in one of the first 10k on the platform). If I flagged a spam account, it was taken...
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    How do DIY folks deal with NEC 690.4 (C) - Qualified Persons Only

    The craziness of things is just beginning. Companies now offer AI analysis of satellite data that will then compare homes and their upgrades against permit DBs. France just used this to find another $10mil in taxes...
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    How do DIY folks deal with NEC 690.4 (C) - Qualified Persons Only

    GA It's extremely stupid for any permitting office to not allow a home owner to pull their own permits. It doesn't stop home owners, it just FORCES them to act 'un-inspected'. Very shortsighted of them to say the least.
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    How do DIY folks deal with NEC 690.4 (C) - Qualified Persons Only

    Same -- anyone can pull their own permits and complete the work here.
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    EG4 8kW Hybrid Inverter | 8000W Output | 12000W PV - $2,799.00

    Schneider has a large support structure in all major countries, and a quality / capability track record to boot. EG4 rebrands generic mass-produced chinese inverters that don't come anywhere close.
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    How do DIY folks deal with NEC 690.4 (C) - Qualified Persons Only

    The issue is that to get licenses in some states they require you to have several years in the profession. As such you'd have zero means of actually making someone 'certified'. If it weren't for having to prove years under a company for certain licenses, I'd get them just to have them out of...
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    How do DIY folks deal with NEC 690.4 (C) - Qualified Persons Only

    Unfortunately that's one of those situations where they'd bully you while not having a legal leg to stand on. Taking them to court would end up more expensive than borrowing someone's license. I ran into a warranty issue for a $14k mits minisplit in that the warranty was much longer w/ a...
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