inverter

Discussion in 'Motorhome Accessories' started by ukbill, Jul 19, 2014.

  1. ukbill

    ukbill Funster

    Joined:
    Nov 3, 2011
    Messages:
    4,897
    Likes Received:
    4,862
    Location:
    benidorm
    question for all you technical minded folks
    i am going to fit a inverter to my mh which will be fitted direct to my inward mains so that when needed the sockets of my mh will be live of course i will put a switch to close the inverter down when not in use or when on ehu please tell me the best way to do this and also the best type of inverter ie:1000w 2000w etc sine wave pure sine wave i have 1 leisure batt but will be putting another in so will have 2 leisures at least 110mh each
    thanks in advance
     
    • Like Like x 1
  2. Geo

    Geo Trader - Funster

    Joined:
    Jul 29, 2007
    Messages:
    9,544
    Likes Received:
    5,596
    Location:
    Mansfield,Notts
    Tell us what you plan to use this sytem for and we can advise better you do/will have a very limited amount of power for such big inverters.
    I do like your idea of feeding it in through the hook up point as it will prevent you hooking up and using the inverter at the same time it is a simple solution but fool proof
    G
     
  3. Techno

    Techno Funster Life Member

    Joined:
    Jul 28, 2010
    Messages:
    13,860
    Likes Received:
    14,520
    Location:
    Leeds the one up North
    Aye but turn the battery charger off :LOL:
     
    • Like Like x 1
  4. funflair

    funflair Funster Life Member

    Joined:
    Dec 11, 2013
    Messages:
    4,493
    Likes Received:
    4,754
    Location:
    Guisborough
    I don't know how it does it but our battery charger is the only thing that is not powered by 240volts when the inverter is running, it has an auto changeover relay thing.

    As Geo says what you want to run will dictate the inverter type, but I would say what the heck go for pure sine straight off you are then future proof, the size will be dictated by the toys you want to run but again 1500 or 2000 watts should cover most things and would be all 2x110ah would want to run even for short periods, and you will need solar to charge back up.

    Martin
     
  5. ukbill

    ukbill Funster

    Joined:
    Nov 3, 2011
    Messages:
    4,897
    Likes Received:
    4,862
    Location:
    benidorm
    yes i realise maybe solar as well but i think i can sort that at a l8er date as for what will be running it will be upto around 700 to 800 watt max but i thought maybe a larger unit better than a smaller 1 for my use i also doubt if i would use it that much but i want it so that i can if need be i dont understand about turning the charger off ?
     
  6. Techno

    Techno Funster Life Member

    Joined:
    Jul 28, 2010
    Messages:
    13,860
    Likes Received:
    14,520
    Location:
    Leeds the one up North
    Your batteries will be supplying 230 volts via the inverter so if plugged into your hook up inlet it will power your battery charger and fridge just like you were on mains
     
  7. Techno

    Techno Funster Life Member

    Joined:
    Jul 28, 2010
    Messages:
    13,860
    Likes Received:
    14,520
    Location:
    Leeds the one up North
  8. ukbill

    ukbill Funster

    Joined:
    Nov 3, 2011
    Messages:
    4,897
    Likes Received:
    4,862
    Location:
    benidorm
    ok but i can manully put my fridge back to gas ? and im assuming then by turning my main switch off this is more of a power save reg charger and fridge ?
     
  9. ukbill

    ukbill Funster

    Joined:
    Nov 3, 2011
    Messages:
    4,897
    Likes Received:
    4,862
    Location:
    benidorm
    thx for the pics but i can build you a hse if ya want and i can plumb anything ya need but leci is sometimes beyond me lol
     
  10. Techno

    Techno Funster Life Member

    Joined:
    Jul 28, 2010
    Messages:
    13,860
    Likes Received:
    14,520
    Location:
    Leeds the one up North
    If you turn your main switch off you'll have no power at all.
    You need to avoid discharging your batteries by allowing them to try recharge themselves with the inverter lol
     
  11. Techno

    Techno Funster Life Member

    Joined:
    Jul 28, 2010
    Messages:
    13,860
    Likes Received:
    14,520
    Location:
    Leeds the one up North
    What you intend will work if you're methodical in turning off the charger and the fridge 230
     
  12. timdownieuk

    timdownieuk Funster

    Joined:
    Apr 9, 2013
    Messages:
    612
    Likes Received:
    326
    Location:
    Ayr
  13. funflair

    funflair Funster Life Member

    Joined:
    Dec 11, 2013
    Messages:
    4,493
    Likes Received:
    4,754
    Location:
    Guisborough
    Hi Bill

    I think you need someone to wire in one of them changeover relay things for you as having to remember to turn of the battery charger all the time would be a PITA. We switch the fridge over to gas when we put the inverter on or if there is loads of sun ex might just leave it on but at least with it being indoors you can see what it is running on a battery charger tends to be hidden away.

    Martin
     
  14. Techno

    Techno Funster Life Member

    Joined:
    Jul 28, 2010
    Messages:
    13,860
    Likes Received:
    14,520
    Location:
    Leeds the one up North
    yes
     
  15. timdownieuk

    timdownieuk Funster

    Joined:
    Apr 9, 2013
    Messages:
    612
    Likes Received:
    326
    Location:
    Ayr
    Thought so but just wanted to be sure. I need to draw out a diagram I think just to get it right in my head.

    Thanks
     
  16. Techno

    Techno Funster Life Member

    Joined:
    Jul 28, 2010
    Messages:
    13,860
    Likes Received:
    14,520
    Location:
    Leeds the one up North
    [​IMG]
    Without mains the inverter feeds the sockets. With mains the coil energises and throws the contacts so sockets are fed from distribution board
     
  17. Wildman

    Wildman Read Only Funster

    Joined:
    May 30, 2008
    Messages:
    15,458
    Likes Received:
    8,598
    Location:
    Ilfracombe, Devon
    2 hours use at 800W would take your batteries down to 50%, the figure you should not go below.
     
  18. funflair

    funflair Funster Life Member

    Joined:
    Dec 11, 2013
    Messages:
    4,493
    Likes Received:
    4,754
    Location:
    Guisborough
    Normally you would use an inverter at 800 or 1000 watt level for only a few minutes, microwave, coffee machine hair dryer etc, if just charging batteries for mobiles or lap top the power draw would be much less and then possibly two hours would be OK.
     
  19. ukbill

    ukbill Funster

    Joined:
    Nov 3, 2011
    Messages:
    4,897
    Likes Received:
    4,862
    Location:
    benidorm
    i would only get a large inveter because i think better to have more than less doubt i would ever use the full [power and if i did it would be just for a few mins
     
  20. Theonlysue

    Theonlysue Funster Life Member

    Joined:
    Sep 14, 2009
    Messages:
    2,955
    Likes Received:
    2,830
    Location:
    Essex
    What's it for bill?
     
Loading...
Similar Threads
  1. cookie
    Replies:
    4
    Views:
    213

Share This Page