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RE: [hreg] Staying off grid

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  • Mike Ewert
    I d like to thank all our solar industry people who have always been very generous to volunteer information to HREG members. Next year I would like to make it
    Message 1 of 11 , Oct 21, 2004
      I'd like to thank all our solar industry people who have always been very
      generous to volunteer information to HREG members. Next year I would like
      to make it a goal for us to help promote them more to the community, in a
      fair and even way, of course.

      -----Original Message-----
      From: Andrew McCalla [mailto:andrew@...]
      Sent: Wednesday, October 20, 2004 11:45 AM
      To: hreg@yahoogroups.com
      Subject: [hreg] Staying off grid



      Kim,

      I concur with John, it all starts with a load analysis.

      For an excellent treatment of this concept I would start with these articles
      @ Home Power. I like, in particular, the second one by Ben Root:

      http://www.homepower.com/files/loadcalc.pdf

      Most inverters you will likely be looking at will have an automatic
      generator start function as well as AC to DC charger with programmable
      profile. So, if you are trying to keep costs down from the get-go, focus on
      that ultimate battery you will need and an inverter that will satisfy the
      preliminary loads, while making sure that it is compatible with modular
      expansion to accommodate future loads. At this point in the game you don't
      need a charge controller.

      What you do need is an AC charging source: Either a temporary grid drop,
      perhaps from a neighbor via Romex (a 20 Amp 120 VAC circuit will do quite a
      bit for battery maintenance) or, more likely in your case it sounds like, a
      good solid, low rev. generator that will last you years.

      Let me know if we can help with this project in any way and meanwhile, good
      luck with the wood-butchers.


      Andrew H. McCalla
      Meridian Energy Systems
      2300 S. Lamar, Ste. 107
      Austin, TX 78704

      (512) 448-0055
      (512) 448-0045
      www.meridiansolar.com










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