inverter

Discussion in 'Tech/Mech General' started by jordano, Sep 14, 2015.

  1. jordano

    jordano Funster

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    Hi all,do i connect my inverter to the starter battery or the leasure batteries? also what size fuse and cable size do i need for a 1500 pure sinewave.
     
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  2. Don Quixote

    Don Quixote Funster

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    Some will say different, but DO NOT connect to starter battery ONLY "Hab" batteries.
     
  3. tonka

    tonka Funster Life Member

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    Simply as a common sense measure, to the Leisure battery,,
    It can and will work from cab/starter battery BUT if you over use the inverter and flatten the battery you face the issue of not starting your van... SIMPLES :)
     
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  4. scotjimland

    scotjimland Funster Life Member

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    Use leisure battery

    cable size depends on length of cable run.. so keep it as short as possible..

    a 1500w inverter takes 125A on full load ,(watts/voltage )

    calculate cable size here .. http://www.solar-wind.co.uk/cable-sizing-DC-cables.html

    example.. a 1mt run would need 16 sq.mm cable
     
  5. Steve

    Steve Funster Life Member

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    250amp fuse, wire will depend on length. 16/25mm if not sure best to get someone to do it for you. You may be pulling 150amps. wires get hot very quick if not correct.
     
  6. eddievanbitz

    eddievanbitz Trader - Funster

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    And don't forget the RCD on the 22o VAC output.

    1500 is more than enough to kill you
     
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  7. Steve

    Steve Funster Life Member

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    Very good advice from Eddie, often forgotten
     
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  8. jordano

    jordano Funster

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    thanks everyone got the correct size cable just need the fuse also one more thing i have two banner batteries side by side and linked together . do i put the live from the inverter to one battery and thr negative to the other batt.
     
  9. Steve

    Steve Funster Life Member

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    both to one battey....you may get a bit of a crack when you first connect so dont jump too high.
     
  10. scotjimland

    scotjimland Funster Life Member

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    either way.. but pos to one battery and neg to the other is preferable
     
  11. Techno

    Techno Funster Life Member

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    As Jim said but use the same size cable across your batteries while you're at it.
     
  12. jordano

    jordano Funster

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    will i get a 250amp fuse from a car shop?
     
  13. Techno

    Techno Funster Life Member

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    Yes they use them for the in car entertainment mob
     
  14. jordano

    jordano Funster

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    thanks everyone will post when its up and running bit of shopping to do
     
  15. eddievanbitz

    eddievanbitz Trader - Funster

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    While your at it, Using a minimum of 25mm2 Cable connect the positive of the engine battery to terminal number 30 on a 300 amp relay (fused both ends) and connect terminal number 87 to the positive of your leisure batteries (again fused both ends). Connect terminal number 86 to your flag terminal on your alternator. Connect terminal number 85 to the negative pole of a battery or the chassis

    Using the same gauge cable uprate the Negative battery lead on the leisure batteries to the vehicle chassis and as Techno said, connect Pos-Pos and Neg to Neg using the same size cable on your two leisure batteries (to equalise the load)

    If you do that, you will be able to use your inverter whilst on the move, and tickover should your leisure batteries be a little flat!

    Just though you may as well whilst sourcing bits and making up batteries leads etc.

    Eddie
     
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  16. jordano

    jordano Funster

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    what size fuse should i use each end also my two batteries are connected together with quite small gauge wire with inline fuses do i leave these in and just connect them pos to pos and neg to neg with the 25mm cable?
     
  17. eddievanbitz

    eddievanbitz Trader - Funster

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    Connect up with 25mm2 cable and remove the boot laces.

    25mm2 cable is rated nominally at 170 amps so you wouldn't want the cable giving way before the fuse so 150 amp Mega fuse would be fine
     
  18. jordano

    jordano Funster

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    where do i buy a 300amp relay ebay is very expensive
     
  19. jordano

    jordano Funster

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    so i remove the bootlaces that leaves one going up into the van is that one ok to leave?
     
  20. eddievanbitz

    eddievanbitz Trader - Funster

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