Inverter

Discussion in 'Tech/Mech General' started by deanroofing, Feb 8, 2014.

  1. deanroofing

    deanroofing Funster

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    Inverter as given up, was making a high pitched noise recently when it was turned on, followed the wiring back to the leisure battery but can't see anything visible, can't see any fuses for it, the fault light on it never come on at all when it made the high pitched noise and didn't make it for very long, seen one on Towsure for £80 anyone got recommendations for one if this can't get sorted, any ideas or help appreciated TIA.
     
  2. JeanLuc

    JeanLuc Funster

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    The high pitched noise is often an alarm in the inverter indicating a low input voltage. Are you sure the leisure battery is well charged? If not, it can cause the symptoms you describe. Also, have you plugged in something new to the inverter? If the cabling supplying the inverter is not sufficiently large and the load applied to the output end is s bit higher than you have tried before, that might indicate voltage drop along the input cable between battery and inverter. I would check to ensure the inverter really is broken before replacing.

    p.s. there should be a fuse in the positive supply between the battery and inverter.
     
    Last edited: Feb 8, 2014
  3. deanroofing

    deanroofing Funster

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    My lad put is charge lead for is mac into it, as we don't tend to plug anything into very often, the leisure battery is only about 400-500mm away felt along live feed but can't detect anything, my lad said he was playing the xbox when it went, but this as been in the van since we had it so no change there.
     
  4. JeanLuc

    JeanLuc Funster

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    Depending on model, the Mac power adapter can be quite power hungry. If it's a MacBook Pro, the adapter is a 90 watt. If an Xbox was running at the same time, that might be enough to lead to voltage drop. What is the rated output (in watts) of the inverter and how thick are cables supplying the inverter from the battery?
     
  5. deanroofing

    deanroofing Funster

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    Yep is a mac book pro, says a 1000 on the front and the cable is about 15mm.
     
  6. JeanLuc

    JeanLuc Funster

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    In that case my earlier comments are not relevant - it should not be overloaded, neither should there be any significant voltage drop along the cables. Your original diagnosis may be correct. If replacing, I would get a trusted brand (Waeco, Sterling, Victron) but they come at a price. Do you need such a large inverter (1,000 W) in view of your likely usage? If it's just for running the items you have mentioned, a 300 W would be ample, you might need only a 150 W.
     
  7. deanroofing

    deanroofing Funster

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    We really only use it for tv and lightweight stuff will the xbox use much,so you reckon 150/300 be ample, thanks for all your input.
     
    Last edited: Feb 8, 2014
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