In which article would you find information regarding Class II locations?

Class II locations are specifically defined and addressed in Article 502 of the National Electrical Code (NEC). This article focuses on areas classified as hazardous due to the presence of combustible dust. It details the requirements for electrical installations in these environments to ensure safety and mitigate risks associated with explosive dust clouds.

Article 502 sets forth the necessary measures for equipment and wiring methods to prevent ignition sources in these locations, including the use of specific types of enclosures and installation practices suited to the unique challenges posed by combustible dusts. Therefore, if one is looking for regulations and guidelines concerning Class II locations, Article 502 is the relevant section to reference.