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Discuss Inverter for offgrid use with battery bank in the Solar Thermal Forum area at ElectrciansForums.co.uk.

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  1. bigspark17
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    bigspark17 Electrician's Arms

    Location:
    wales
    Hi , anyone have a good background in using inverters in off grid system or possible mains & off grid with changeover switch.?
    After some info on working out sizing/fusing of inverter, preferably 12vdc-230v ac or maybe 24v dc-230v ac depending on cost and performance differences.
    Hope for some previous experiences/installs for help on an exiting project.
     
  2. Pete999
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    Pete999 Forum Mentor

    Location:
    Northampton
    Business Name:
    None
    Are you talking UPs if so how many KVa?
     
  3. bigspark17
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    bigspark17 Electrician's Arms

    Location:
    wales
    Looking at 2kw interter
     
  4. Pete999
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    Pete999 Forum Mentor

    Location:
    Northampton
    Business Name:
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    A 2 KW interter, never seen one of them ever:rolleyes::oops::eek::Donly messing
     
  5. Strima
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    Strima Electrician's Arms

    Location:
    St Neots
    What exactly are you looking at powering as this will have an impact on what you use and options that are available.
     
  6. Pete999
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    Pete999 Forum Mentor

    Location:
    Northampton
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    My experience stems from working with on line 10 TO 25 KVa UPs installations, sometime series installs, but mainly stand alone.
     
  7. neil_m
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    neil_m Regular EF Member

    Location:
    Merseyside
    Mate of mine out in the sticks in France, and off grid initially, just used a couple of 'life expired' computer UPS's and did similar with the AGM batteries for the power bank - all came from same industrial refit (albeit a navy dockyard!) all the kit still works now 7-8 years on!! The only thing he couldn't run was big rated heating elements but with LED lighting, gas cooking and wood burner he was able to stay off grid for years, in fact he still can for when the overhead supply fails.
     
  8. Pete999
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    Pete999 Forum Mentor

    Location:
    Northampton
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    Nor strictly living Off grid when you have to use the grid to charge the Batteries, is it.
     
  9. neil_m
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    neil_m Regular EF Member

    Location:
    Merseyside
    I forgot to mention the solar panels didn't I !
     
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  10. Pete999
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    Pete999 Forum Mentor

    Location:
    Northampton
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    Ah Ah makes sense now.
     
  11. Sparkingmad
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    Sparkingmad Regular EF Member

    Location:
    Dorset
    I have solar panels and a big inverter ooh err saw a company offering grants for a battery system that’s hooks up to it all, was wondering if anyone had made their own or got any details. Might be of use to OP too. Use electricity generated during the day to charge the batteries with minimal load then use the batteries to feed back into the dc side of inverter?
     
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  12. bigspark17
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    bigspark17 Electrician's Arms

    Location:
    wales
    Ups would be to work as a back up to a mains install, i did state in OP that it was off grid so have to be inverter
     
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