Terminals for inverter

Discussion in 'Tech/Mech General' started by Munchie, Mar 23, 2012.

  1. Munchie

    Munchie Funster Life Member

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    We have bought a 600w inverter from Maplins (£45).
    It connects to a battery via two "clamp clips"
    I don't want to lift the bonnet and also the battery terminals are not easy to get at.
    So, i am thinking of running a lead from the + on the battery and one from the engine block into the m/home (we have a route) and connecting them to two "studs" inside the van that I can clip the inverter to.

    Any comments or help please? :Smile:
     
  2. MikeandCarolyn

    MikeandCarolyn Read Only Funster

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    Just wondering about the rational for connecting to the engine battery? Our invertor is sat next to our leisure batteries and connected via short lead.I then put a 13amp socket on wall
    near the invertor and connected it's 13amp outlet to that.

    Mike.
     
  3. Munchie

    Munchie Funster Life Member

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    Leisure batteries are under the bonnet at either side Mike.
    Engine battery is under the floor.

    But I like your system, I could mount the inverter in the engine compartment wired direct to the battery and run a 240v extension from the 3 pin socket on the inverter to a 3 pin socket in the van. :thumb:
     
  4. haganap

    haganap Funster Life Member

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    Nothing wrong with that Ken,. Obviously as long as they dont touch each other, but Im sure you know that, and that there somewhere nice and safe so you cant drop some metal between them..

    First thoughts, were that it would be great to run from the Cab battery as obviously its charging system is simples. But a word of warning would be, how are you going to ensure you remember to turn your inverter off? or ensure that the drain from the battery is not too much that you can't start your engine?

    far better IMO to go via the Hab batteries,will still of course be charged whilst you run the engine.
     
  5. haganap

    haganap Funster Life Member

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    typed whilst I was writing, I do this very thing.^^^^^

    Thought you were going to the engine battery :Blush:
     
  6. Munchie

    Munchie Funster Life Member

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    He he just to clear things up. I will be connecting to the leisure batts as i have 2 x 80w solars and would only use the inverter when sunny. It is only to run Steph's little washer when not on hookup. :Smile:
     
  7. haganap

    haganap Funster Life Member

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    Women :Nowink::Nowink:

    :Rofl1::Rofl1:
     
  8. GJH

    GJH Funster Life Member

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  9. andyman

    andyman Read Only Funster

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    • Like Like x 1
  10. haganap

    haganap Funster Life Member

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  11. JeanLuc

    JeanLuc Funster

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    Just one thought - is the area under the bonnet where you want to instal the inverter sealed from road spray? I don't think inverters like damp.
     
  12. Munchie

    Munchie Funster Life Member

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    On reflection I will just mount the inverter in a cupboard and wire it to the leisure batt.

    Didn't want to mount it at first but thinking about it it will be the easiest way.

    Thanks for comments. :thumb:
     
  13. GJH

    GJH Funster Life Member

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    No, she has to find her own rocks when she gets there :Rofl1::Rofl1:
     
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  14. canopus

    canopus Funster Life Member

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    Ken - did you say a washer? Is there such a beast that draws less than 600 Watts? Suspect there must be no heating element in it if thats the case ! :thumb:
     
  15. jhorsf

    jhorsf Read Only Funster

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    What are you babbling at man​



    SIMPLES
    4698730221_bf3d7c3cb4.jpg
    [/ATTACH]
     

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  16. Wildman

    Wildman Read Only Funster

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    loads of cold water soap powders around these days so a cold water wash is fine. But it does sound like a good way to flatten your batteries very quickly. Even with solar.
     
  17. TheBig1

    TheBig1 Funster Life Member

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    Just a couple of points....
    make sure you use heavy guage wire between battery and inverter suitable to carry peak current and fuse it accordingly
    keep the length of the wire used to a minimum, preferably under 1m but not over about 3m. The longer the cable the greater the resistance and voltage drop
    if mounting in a cupboard allow plenty of ventilation to keep the inverter cool and prolong its working life
    wherever possible fit a high current isolator in the battery feed, as most inverters draw quite a current on standby, when you think they are off. Alternatively use an anderson type plug and socket so it can be unplugged to save your battery/ies
     
  18. scotjimland

    scotjimland Funster Life Member

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    Indeed..

    this is very important.. and the longer the cable, the larger the cable needs to be to minimise volt drop .. If the cable is too small, it can be very dangerous as the cable will heat up and potentially cause a fire. Undersized cables also waste energy.
    Conversely, too large a cable and you are simply wasting your money on good copper.

    to illustrate .. and using your example, a 600watt inverter at 12v pulls 50Amps

    A 1mt run should have 25mm cable..

    A 2mt run should have 35mm cable

    A 3mt run should have 50mm cable..

    A 4mt run should have 75mm cable
     
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  19. goldwinger

    goldwinger Funster

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    If I am telling you how to suck eggs I am sorry I have fitted the same inverter maplin expert informed me to fit a 60 amp fuse close to the battery on the positive lead.
     
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