IECEx rated equipment install in USA

[controlnovice]

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?

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[dbaird]

Check:


David Baird

Sr Controls Designer
EET degree.
Journeyman Electrician.

 

[controlnovice]

Thanks Dbaird

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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[dpc]

Article 505 applies only to Class I environments.

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.

 

[controlnovice]

Ahhh...yes...

Thanks for the clarification!

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[rbalex]

Responding to the OP; in general - No. Equipment only marked "Ex" or "EEx" is not acceptable.
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).