Bessacarr E540 Reverse Polarity when genny plugged in

Discussion in 'Bessacarr' started by pij974, Nov 16, 2009.

  1. pij974

    pij974 Funster

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    Hi, my parents are getting the reverse polarity symbol on their control panel when they plug a genny into the van. They have tried 3 different generators and get the same outcome. Anyone else had this problem? Obviously something wrong with the van???
    Thanks in advance
    Paul
     
  2. andyman

    andyman Read Only Funster

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    I had the same problem. Scotjimland put me right, it is because the generator is not earthed.

    Andy
     
  3. lunarman

    lunarman Funster

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    What lead are they using to connect the generators could there be a reversal in it?
     
  4. pij974

    pij974 Funster

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    Hi Lunarman, they have checked the leads and they are ok. They have the regular 3 pin plug to round blue plug converter lead which is ok, and their 30m site lead which is also ok. andyman, could it be that simple? i have tried it on my van and all seems ok, could it just be the control panel super sensitive on the bessy?
     
  5. Braunston

    Braunston Read Only Funster

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    Hi,

    I don't know how they are connecting the generator, but if its the same as I do, by using a shortish lead with a normal home 3 pin plug or (other suitable plug to connect to the generator) on one end plugged into the generator and a Euro (Blue) Round plug on the other end plugged into the normal outside socket that you would normally connect your Hookup lead to, then surely you just need to reverse the Live and Neutral in one end of the lead, or perhaps I'm missing something.


    Have you got a short reverse polarity lead made up, only if you have just try inserting that as you would on a normal hookup.


    By "Short Reverse Polarity Lead" I mean a short lead about 1 or 2 feet long with a male Euro Plug on one end and a Female Euro plug on the other, with the internal wiring between the two reversed e.g. Live in one end to neutral in the other and Neutral in one end to live in the other, then any time you connect your motorhome to a power supply if it shows reversed polarity, all you do is pull the plug out of the connection in the side of your motorhome and insert the "Short Reverse Polarity Lead" which should resolve the situation, sorry if you already know this as it may help someone else

    Hope it makes sense.
     
  6. andyman

    andyman Read Only Funster

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    Reverse polarity lead makes no difference my Autotrail.
     
  7. scotjimland

    scotjimland Funster Life Member

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    Hi

    as Andy said, it's because the genny isn't bonded or earthed to the van.,. it's nothing to be concerned about and reversing the polarity of the EHU lead won't get rid of the 'fault' light on the panel. So there is nothing wrong with the genny or the van panel.


    jim
     
    Last edited: Nov 16, 2009
  8. andyman

    andyman Read Only Funster

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    I know Jim had the answer.

    Andy
     
  9. SwiftGroup

    SwiftGroup Read Only Funster

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    Hi pij974,

    I think the answer has been stated, but generators have a "floating earth", which can lead to Reverse Polarity being detected by the MH electrical system.

    It is not a fault of the system, simply an effect of using a generator.

    Thanks,

    Ash
     
  10. pij974

    pij974 Funster

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    Thanks ScotJimland, so can you overcome this by putting an earth stake into the ground and connect that up to the little earth tag on the genny, or does it have to be connected to the van? If so how?
    Thanks Again
    Paul
     
  11. sinbad1

    sinbad1 Deleted User


    ummm you started somthing now:BigGrin:
     
  12. scotjimland

    scotjimland Funster Life Member

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    and I'm not going there... I'm under doc's orders not to get stressed .. :Laughing:

    Seriously>

    Don't know what genny you have but I've yet to see an earth lug on a suitcase model, just isn't needed.. all plastic case.

    If you have a builders open frame thats a different kettle of fish, they should be earthed using an earth spike and the van bonded to the same point ..

    I'm guessing it's the former so no need to worry ..

    jim
     
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