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Anonymous Poster

IP 55 Rating vs NEC article 502 - Class II Locations

12/30/2009 7:04 PM

HI~!

Happy new year everyone.

I'd like to ask what IP 55 rating corrspond with NEC article 502.8 'Motors and Generators' class II, Division 2.

If anyone know or can explain that my question, please send me e-mail 'jeongse.kim@doosan.com'.

thanks,

jeongse
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Current Maarey
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#1

Re: IP 55 Rating vs NEC article 502 - Class II Locations

12/31/2009 1:53 AM

IP ratings are for the suitability of the equipment for mechanical and water ingress protection. Whereas the class II Div 2 ratings are for suitability of equipment for working without causing a hazard when such equipment are installed in hazardous classified areas.

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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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#2

Re: IP 55 Rating vs NEC article 502 - Class II Locations

12/31/2009 3:25 AM

http://cr4.globalspec.com/thread/45769/Why-You-Shouldn-t-List-Your-Email-Address

Also, it deprives other interested readers of any answer.

http://en.wikipedia.org/wiki/Electrical_Equipment_in_Hazardous_Areas

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msamad
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#3
In reply to #2

Re: IP 55 Rating vs NEC article 502 - Class II Locations

12/31/2009 3:29 PM

Guest,

First of all, you are comparing two different things – IP (Ingress Protection) is completely different from what is mentioned in NEC article 502. I don't think there is anything in NEC that is comparable to IP (CENELEC). However, the NEMA enclosure type is comparable to CENELEC IP (http://www.nema.org/prod/be/enclosures/upload/NEMA_Enclosure_Types_11-05-2.doc)

NEC article 500 (Hazardous Locations) can be compared to IEC 60079.

See the following links for further help:

http://www.stonel.com/pdfs/process_environment.pdf

http://cr4.globalspec.com/thread/44009

Happy New Year everybody

- MS

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