diy solar

diy solar

Recent content by AC/DC

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    1st off-grid adventure — need charge controller advice

    I need some help getting the wires into my garage, I am kinda both lost and a little scared since it's punching a hole into the house. First, do I need to run cables inside a conduit? Initially/for a while, this will be a temporary install with the panels laying on the grass (more on this later...
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    DC House 24v 100ah ($393)

    EcoWorthy 12.8V 150Ah definitely shuts off (LVDC), I would expect the same from an equally high[er]-end product in their catalog such as the 25.6V 100Ah? Opening up mine didn't seem to be pouch cells, but I didn't take it apart more than just taking the top cover off (all-metal case), I can post...
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    Non combustible backing board

    Got it, I saw the Hardie Backer-specific screws, so just screw those directly in then? Sounds good! I also ordered that NO BURN spray, will see how it works, if it does it would save a step.
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    Non combustible backing board

    My only issue with concrete board is drilling into it, as I'm semi-asthmatic. I guess wearing a respirator would work, but there's post-drilling cleanup to deal with too that I'm not too excited about. Wonder how well that works. After @Bluedog225's suggestion, I also found this intumescent...
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    Non combustible backing board

    I have zero experience with paints, mind sending me a link? Would it be something they would mix? I looked on the shelves and couldn't find a single gray latex paint.
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    Non combustible backing board

    Your comment about the industrial look caught my eye and I wanted to do something like that, however I can’t seem to find any gray latex paint at HD/Lowes. All I found is a gray primer. What do you use? And do you prime first?
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    Safety Gloves?

    Late to the party here, I just wanted to add, both in reply to the quote above and to the thread subject: AC wants to travel to ground, insulation from the ground is a great additional layer of safety protection when working with AC. DC wants to return to its source, it will try to complete a...
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    1st off-grid adventure — need charge controller advice

    Just wanted to make sure I got this right, according the calculators like this 1/0 should work up to 250A given it's open air, correct? And this should be the cabling all the way to the inverter not just to the fuse, right?
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    1st off-grid adventure — need charge controller advice

    Very cool, I like the visual indication of when the caps are filled. Endgame would be to have some sort of automated circuit to do the lightbulb until the measured voltage across that circuit dropped to near 0V then switch off it, and reset the system every time the breaker is tripped...
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    1st off-grid adventure — need charge controller advice

    Thanks, I use search exhaustively but for some reason I didn’t run into this. The pushbutton design looks good. This is a problem I did not anticipate, do most people not have a disconnect on the inverter? Or is everybody running prechsrge circuits? Thank you for all your help, and for pointing...
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    1st off-grid adventure — need charge controller advice

    Got it, thanks. Where can I get more info on building something like this? I'm using a resistor as seen in Will's videos, but I see what you mean, if you manually trip the breaker, then turn it back on, you can experience the dreaded inrush. At this pace I don't think I'll ever get my system...
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    1st off-grid adventure — need charge controller advice

    What about something like this to kill 2 birds with one stone? https://www.midnitesolar.com/productPhoto.php?product_ID=202&productCat_ID=39&sortOrder=1&act=p It lists an AIC of 50k @ 125VDC — not sure about reaction time?
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    1st off-grid adventure — need charge controller advice

    Got it. 250A seems to still cover my use case with the additional +12%, which would put me at ~247A. Would something like this work? https://www.amazon.com/Blue-Sea-Systems-5118-Class/dp/B000MMC7SY/ Do I need a holder? Holders seem to be more expensive than the fuse.
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    1st off-grid adventure — need charge controller advice

    What Class-T fuse do you guys recommend? I'm going by a basic formula I saw on the forum (thanks @John Frum!), starting with inverter and working backwards: 3000W max continuous / .85 conversion factor / 20V low cutoff = 176.5A service amps 176.5A / .8 fuse headroom = 220.6A fault amps So...
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    Continuing DIY or give up DIY to buy already assembled battery?

    That doesn't seem bad at all, which ~15kWh prebuilt have you priced that competes with a delivery kit for only that much more?
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