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We have procured a Customized PLC ExD Enclosure. Our vendor procured the Empty ExD enclosure from a certified Manufacturer, which based on the Schematics given to him by my vendor, drilled the required holes for cables, and mounted panel door switches and lights, and certified the enclosure with required Temperature Class based on the Heat dissipation. However under agreement between the 2 parties the installation of the PLC and internal components was done by my vendor and not the Exd enclosure manufacturer. Probably there was no inspection carried out by the ExD Enclosure Manufacturer.
The question is does this Enclosure required to be re-certified by UL/ATEX or it is not required?
The question is does this Enclosure required to be re-certified by UL/ATEX or it is not required?