IECEx rated equipment install in USA
IECEx rated equipment install in USA
(OP)
Can equipment rated with IEC Ex label be installed in the USA?
We are investigating an analyzer rated for IEC 61241-0 as equipment rated for combustible dusts.
Would that be okay to be installed in a Class II, Div II area in the USA?
We are investigating an analyzer rated for IEC 61241-0 as equipment rated for combustible dusts.
Would that be okay to be installed in a Class II, Div II area in the USA?
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RE: IECEx rated equipment install in USA
David Baird
Sr Controls Designer
EET degree.
Journeyman Electrician.
RE: IECEx rated equipment install in USA
I have that 'poster' already.
This happens to be a dust atmosphere.
Also, from that poster, I couldn't tell if IEC was accepted in the USA. It appears that ISA has code for Zones in the USA. Are they interchangable, was my question.
But I think i found the answer in the NEC (where I should have looked first before posting here!!):
501.5 Zone Equipment.
Equipment listed and marked in accordance with 505.9(C)(2) for use in Class I, Zone 0, 1, or 2 locations shall be permitted in Class I, Division 2 locations for the same gas and with a suitable temperature class. Equipment listed and marked in accordance with 505.9(C)(2) for use in Class I, Zone 0 locations shall be permitted in Class I, Division 1 or Division 2 locations for the same gas and with a suitable temperature class."
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RE: IECEx rated equipment install in USA
But, a combustible dust would be Class II, not Class I. So Article 506 is more applicable. It covers Zones 20, 21 and 22 locations.
RE: IECEx rated equipment install in USA
Thanks for the clarification!
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RE: IECEx rated equipment install in USA
Whether Class I or Zone 20, 21 or 22, one fundamental requirement for US installation of any "Ex" type equipment is that it specifically be marked "AEx." See 506.9(C)(2)(3)and 506.9(C)(2)(1).