Q: I work for a UL 508 panel shop, do I need to match the housing rating to my enclosure?

A: For UL 508 panel shops, the UL rating of the housing must match the rating of the enclosure. It cannot exceed in order to pass (IE use UL 4X GracePort on UL 4 rated enclosure). If UL 508 is not needed or desired, a housing can exceed the rating of the enclosure with no problems.