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Posted by sspence on May 13, 2009, 3:03 pm
 

I have a shallow well. Can't use elevated due to freezing in winter.
The dc pump works wonderfully, and relieves load on the inverter. The
old jet pump when washing clothes would give the old inverter fits,
and screw up the electronics on the front loader washer. Also, when
you pop an inverter, you still have water. Even in power situations,
you can pedal the thing.

Posted by Ulysses on May 13, 2009, 3:41 pm
 

A few years ago we invested in a high quality dc pump for our offgrid

I have a shallow well. Can't use elevated due to freezing in winter.
The dc pump works wonderfully, and relieves load on the inverter. The
old jet pump when washing clothes would give the old inverter fits,
and screw up the electronics on the front loader washer. Also, when
you pop an inverter, you still have water. Even in power situations,
you can pedal the thing.

Freezing eh?  I buried the bottom of my tank about 1 1/2' and all the pipes
are down that far too but it doesn't get all that cold here--sometimes down
into the teens but it always gets above freezing during the day.  I suppose
the top of the water inside the tank could freeze and the water would stop
flowing due to vacuum but I figure I could always punch a hole in the ice if
I had to.  I also still have water too if things fail but if my well pump
went out I'd be desperate after a couple of days.  Right now I'm filling my
elevated tank once-a-day using a 240 VAC generator but I usually use my
inverter along with an autotransformer.  Right now my problem is my battery
charger--6.5 HP engine running an alternator.  It *can* produce more power
than the well pump uses so I see a net positive on my battery meter but
lately it keeps breaking.  But that's another thread.



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