Ignition-Capable Equipment : Equipment that, under normal operation, produces sparks, hot surfaces, or a flame that can ignite a specific flammable atmosphere
NFPA 496 Standard for Purged and Pressurized Enclosures for Electrical Equipment, 2008 ed. (Std: Purged and Pressurized Enclosures for Elctr Equip - Amer) {322 NFC}
