Hazardous Location and Explosion Proof are two different concepts. These region designations demand various methods.
Class I, Division 1 ratings are often assigned to explosion proof lights. They must stop components with high voltage and amperage from acting as an ignition source. The elements that produce sparks are enclosed in a substantial enclosure. The device prevents hot gases from flowing through in the event that vapors or gas seep in and catch fire. nonetheless, permits the passage of chilly gases via joints.
Areas with Designated Hazardous Locations
Hazardous places in North America are categorized into classes, divisions, and zones.
Class and Divisions System (Only US & Canada)
Class I, Division 1-Where ignitable quantities of flammable gases, vapours, or liquids are unlikely to exist under typical working circumstances.
Groups A, B, C, and D of Class I include acetylene, hydrogen, ethylene, and propane.
Class II, Division 1 - Where ignitable concentrations of combustible dusts can exist all of the time or some of the time under normal operating conditions.
Class II, Division 2 - Where ignitable concentrations of combustible dusts are not likely to exist under normal operating conditions.
Class II Groups - E - Metal Dust, F- Coal Dust, G - Grain Dust
Class III, Division 1 - Where ignitable concentrations of ignitable fibres and flyings can exist all of the time or some of the time under normal operating conditions.
Class III, Division 2 - Where ignitable concentrations of ignitable fibres and flyings are not likely to exist under normal operating conditions.
Systems for Zones (IECEx/Canada & US)nemalux-hazardous-location-lighting
According to the frequency and duration of an explosive gas/dust environment, hazardous places are divided into the following Zones:
Zone 0, 20 - Continuously, regularly, or for extended periods of time, a potentially combustible environment is present.
Zone 1, 21: Occasionally, during routine operation, a potentially flammable environment is likely to exist.
Zone 2, 22: If a potentially flammable environment does arise during regular operation, it will only last for a short time.
