diy solar

diy solar

Recent content by Vigi

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    DC generator, poor mans edition

    You could get an appropriate voltage vehicle alternator and just run it directly (belt drive) from your Predator engine. Small aircraft use 28VDC alternators, that might do. Your inverter is wired to the battery. I've seen a good video with a setup like this to a 12V vehicle alternator...
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    Dealing with 2 inch pipe threading and cutting

    I second the idea of using off the shelf precut and threaded pipe, if possible. In the US, many Home Depot and Lowe's stores will thread pipe that you buy from them. The may charge something for that, I don't remember if I paid last time. I would do everything practical to return the pipe...
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    Low-amperage, small diameter pump for a 70 foot well depth?

    I was aiming for a much smaller pump for this backup system. My "regular use" 1/2 hp 120vac pump (approx 800 running watts) produces about 8 gpm. For this backup pump, I'd be very satisfied with 1 gpm, and even much less than that could be a lot better than nothing. 4 hours of sun = 240...
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    Low-amperage, small diameter pump for a 70 foot well depth?

    Yes, I think that's where I may end up. And, it's not a bad answer at all--the cost difference isn't a lot between the 2000W (4000W surge) inverter I'd need for the pump and a more modest inverter I'd otherwise get. ( If I were buying a new main pump, maybe I'd get a Grundfoss pump to reduce...
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    Low-amperage, small diameter pump for a 70 foot well depth?

    Thanks, and yes, a small 12V RV style diaphragm pressure pump from a cistern would work fine in a pinch to get water to the home faucets and fixtures. My question, though, was about finding a good way to do the harder part--lift water out of me well and into the cistern using small diameter...
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    Solar Co-ops

    There are a lot of good things about private residential rooftop solar, but from an objective standpoint it isn't a very efficient way to do things. It is >way< more cost efficient (KW/$$) to put panels up by the hundreds on top of warehouses, over parking lots, or in other spots than to put...
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    Low-amperage, small diameter pump for a 70 foot well depth?

    Greetings, I'm new here. I have "typical" residential/suburban well: 5 inch bore, water level at about 40-60' below grade, pumped with a 120VAC 1/2HP pump that goes to my pressure tank. The submerged pump is about 80' below grade. It works fine, but I'd like to have a backup ability to get...
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