Historical
NFPA 496-2021
NFPA 496, Standard for Purged and Pressurized Enclosures for Electrical Equipment
This standard provides information on the methods for purging and pressurizing electrical equipment enclosures to prevent ignition of a flammable atmosphere, whether introduced into the enclosure by a surrounding external atmosphere or by an internal source.
Content Provider
National Fire Protection Association [nfpa]
