We’re all on wells, we all built our own electrical and plumbing systems, we’re all on solar power which doesn’t always work even in the desert, none of us knew what we were doing, we all get dry water tanks from time to time. But when you take the path Ian and I did, a dry water tank is a much bigger deal.
There are two possible approaches: A standard 110v pump that moves 6-10 gpm at the cost of massive but periodic amperage, or a 15v low-flow pump that runs near-constantly (in daylight) at low amperage, with a much simpler electrical plant, at the cost of, well, low flow. We built that second thing. And now, ten days after I fixed that check valve that emptied the tank …


…the water tank is nearly but still not entirely full. First snow of the season and some cloudy days didn’t help. But I’m at least now sure I fixed the problem and can stop rationing well water.
Due to a parallel but unrelated problem with Ian’s electrical system…

…it took a long time to catch up with laundry. Ian’s electrical was more or less trouble-free for all the summer, which caused me to forget all the trouble I had with it last winter after replacing his eight worn-out L16s with eight much smaller T105s: The trouble being that his pressure pump is a huge amp draw that can easily suck the batteries down to the system’s cut-off point and there’s not enough sun to counteract the effect.
Even in summer the pressure pump is on a 12/12 timer because it’s just really important that the pump not be allowed to run at night. But even at peak solar input the amp draw from the pump is twice what the panels can bring in, and if the batteries get to 80% charge the whole damned system shuts down. And in winter it takes days to fully recharge them with full sun and minimal drain.
So I have to be careful about the washing machine, showers are right out, and I have to keep the pump turned off most of the time. The fridge is also on a timer, and the daylight schedule has gone to 2 hours on/off which is enough to keep frozen stuff frozen without stressing the batteries. Unless, of course, we get a few gloomy days which throws everything off. Basically, that big pump requires bigger batteries and a better-placed solar panel array than it has or is likely to get.
I could – and might – bring the Honda back over to his place. It’ll run the pump without difficulty as long as that’s all it has to do. But I’m reluctant to do that since I can now use it to keep my own batteries topped off. Basically, this is why all sensible people who live on solar also have capable generators. Even in near ideal conditions, sometimes solar still sucks.