Ventilated Equipment : Equipment, such as motors, that requires airflow for heat dissipation as well as pressurization to prevent entrance of flammable gases, vapors, or dusts
NFPA 496 Standard for Purged and Pressurized Enclosures for Electrical Equipment, 2008 ed. (Std: Purged and Pressurized Enclosures for Elctr Equip - Amer) {322 NFC}
