Electromagnetic field from electric engine

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SUMMARY

This discussion addresses concerns regarding electromagnetic fields (EMFs) from electric engines in sailboats, specifically focusing on a 30-ft model equipped with AGM or gel batteries. The conversation highlights that EMF emissions from a DC supply, particularly when the engine is not running, are minimal and unlikely to pose health risks. Participants emphasize the importance of enjoying sailing rather than worrying about unproven health effects associated with low-level EMFs. The use of gaussmeters for measuring EMF levels is mentioned, although local availability may be an issue.

PREREQUISITES
  • Understanding of electromagnetic fields (EMFs)
  • Familiarity with electric propulsion systems in marine applications
  • Knowledge of AGM and gel battery technology
  • Basic principles of gaussmeters and their usage
NEXT STEPS
  • Research the operation and safety of electric engines in marine environments
  • Learn how to use a gaussmeter effectively for measuring EMF levels
  • Investigate the health implications of living near electric propulsion systems
  • Explore best practices for battery placement and safety in sailboats
USEFUL FOR

Individuals considering living aboard electric-powered sailboats, marine engineers, and anyone interested in the safety and implications of electromagnetic fields in marine environments.

rxahart
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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.

http://www.advancedmarineelectricpropulsion.com/index_files/Page497.htm
 
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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.
 
A magnetic compass works as a primitive gaussmeter.

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

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