Does conduit passing through a class 1 div 1 area under a vapor retarder and turning up in a unclassified area need xp fittings?

Yes, conduit passing through a Class 1 Division 1 area should utilize explosion-proof (XP) fittings when transitioning to an unclassified area. This is necessary to prevent potential ignition sources from entering the unclassified zone. The fittings ensure that any explosive gases or vapors in the classified area do not escape through the conduit to the unclassified area. Always consult applicable codes and regulations for specific requirements.