UL mark of Ex enclosure

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timchengyong

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China
I notice some Ex enclosures' marking are UL classified and some are UL listed in the nameplate, and UL classified enclosure without T-code. So what's the difference wiring requirement between two marks?

BG,
Tim
 

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  • InkedUL classified and CSA Killark.jpg
    InkedUL classified and CSA Killark.jpg
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