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Electromagnetic field from electric engine

  1. Mar 26, 2012 #1
    Physics is not my forte, but I need some answers re EMFs. I want to buy a 30-ft sailboat that has an electric engine. (I have attached a link to the exact model for reference.) Further, my intent is to live aboard. I have been planning on making my permanent bed right over the top of the engine and at least 2 of the 4 AGM or gel batteries. How can I determine the amount of EMF from the engine/batteries when they are fully charged but disconnected from shore power? I know about gaussmeters, but I haven't been able to locate one locally yet.

    Please state your qualifications for answering my question.

    Thank you.

  2. jcsd
  3. Mar 26, 2012 #2


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    Your question is a bit unspecific as to your particular fear. Why should there be any "EMF" from a DC supply, particularly if the engine is not running?
    If I were you, I'd just enjoy the sailing. You would be getting more problems from the pollution from a internal combustion engine than you are likely to get unproven effects from a few amp hours of current flowing through your electric motor. There are many people who live in the constant presence of massive currents in power distribution systems. Permanent health effects have been a bit difficult to prove inconclusively afaik. If they had, there would have been some pretty expensive law suits, already.

    Until you pay me as a consultant, I don't feel I need reveal my qualifications but I am, in general, very skeptical about the scare story thing, in general.
  4. Mar 26, 2012 #3

    jim hardy

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    A magnetic compass works as a primitive gaussmeter.

    If there's a strong field about you'll find it.
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