Electrical.......Negative polarity.

Discussion in 'Motorhome Chat' started by Movin' on, May 6, 2010.

  1. Movin' on

    Movin' on Read Only Funster

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    I have recently seen an advert for a gadget that detects if an electrical supply is operating on negative polarity and switches it automatically to positive polarity and thereby protecting you electrical goods. I've never heard of any country that uses negative polarity and now I'm wondering (as I'm about to embark on full timing) if there is something I should know about some of these strange little electrical quirks that some of these far off lands have. Has anyone ever come accross this problem? Movin' on.
     
  2. hilldweller

    hilldweller Funster Life Member

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    Oh you soon will, trust me :Smile:

    Just enter polarity in the search engine and it'll keep you reading for about three days.

    To sum up - if it kills you than the gods were going to get you one way or another. You've a better chance of getting killed in a RTA on the way to the reversed mains.
     
  3. Movin' on

    Movin' on Read Only Funster

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    Thanks

    Thanks for that Brian, I'll have a look on line as you suggest and do some research. How common is it, would you say these gadgets are a good investment? Movin' on.
     
  4. keith

    keith Funster

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    It's called "Reversed Polarity" when live and negative are reversed. It happens on many foreign sites, commonly rectified by a short lead wired to correct it.

    Not an in-surmountable problem.
     
  5. vwalan

    vwalan Funster

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    i do carry a polarity testerin my truck. its been there for ten years .having ouredmost of eu and n,africa have never used it. dont use electric hook up .hardly ever use a camp site .worth having one if you want to .but only if you want to worry. as brian says look at previous threads i reckon you could be there for ever if you google.
     
  6. hilldweller

    hilldweller Funster Life Member

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    I don't know how common. I carry a £5 tester plug and a crossed over short lead. Usually forget to test and never had to use the lead. I still seem to be alive.

    This is the lead circuit - might not display properly but all it does is swap L and N.


    E----------------------------------E
    L--------\
    ________\-------------------------N


    ________/...............................L
    N--------/
     
  7. keith

    keith Funster

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    Very pretty Brian. Does the exclusion of the Earth on the lower diagram indicate the likly absence of an earth on some continental sites, as is often the case. :Rofl1:
     
  8. Movin' on

    Movin' on Read Only Funster

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    Thanks

    My thanks to every body for their swift response, you have all been very helpful.
     
  9. wildbri

    wildbri Read Only Funster

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    Other countries use a different system for their electrical installations than we have, better and safer in my opinion. They use double pole switching on their appliances and also circuit breakers in the installations. If you plug into a reversed polarity system your equipment will work as normal but when switched off, although the equipment will stop working will still be connected to the live supply, this could be a safety issue. My van has a light which tells me of this situation and I use a short lead with cables reversed ( and clearly marked as such) to rectify it at that site. Regards bri:BigGrin:
     
  10. hilldweller

    hilldweller Funster Life Member

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    All part of the FUN service.

    Now would you like to ask about being gassed in your motorhome ?
     
  11. keith

    keith Funster

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    Behave Brian, have you not got anything to do tonight? :Rofl1:
     
  12. hilldweller

    hilldweller Funster Life Member

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    Where's the FUN in that ?
     
  13. Johns_Cross_Motorhomes

    Johns_Cross_Motorhomes Trader - Motorhome & Accessory Sales

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    You been eating Tesco Value Baked Beans again Brian:Rofl1::Rofl1::Rofl1:

    Peter
     
  14. dave newell lvs

    dave newell lvs Trader-Vehicle Services

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    Movin' on, can I ask where you saw the advert for the automatic chager please? I ask because we stock a manual unit and several people claim to have seen an auto chager but no-one can point me to it. It usually transpires that they have been looking at the manual units we sell but have mis-understood what it does.

    Cheers, D.
     
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