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Hazardous Locations Products

In 1947, the NEC recognizes the existence of different levels of risk in hazardous areas.


"Articles 500 through 504 cover the requirements for electrical and electronic equipment and wiring for all voltages in Class I, Division 1 and 2; Class II, divisions 1 and 2; and Class III, Divisions 1 and 2 locations where fire or explosion hazards may exist due to flammable gases, flammable liquid-produced vapors, combustible liquid-produced vapors, combustible dusts, or ignitable fibers/flyings"


North America Hazard Category

  • CLASS I (Gases and Vapors)
  • CLASS II - (Dusts)
  • CLASS III - (Fiber & Flyings)

Area Classification

  • DIVISION 1 - Continuous or Intermittent Hazard
  • DIVISION 2 - Hazard under abnormal Conditions

Temperature Classification

  • T1450°C
  • T2 300°C
  • T2A 280°C
  • T2B 260°C
  • T2C 230°C
  • T2D 215°C
  • T3 200°C
  • T3A 180°C
  • T3B 165°C
  • T3C 160°C
  • T4 135°C
  • T4A 120°C
  • T5 100°C
  • T6 85°C

Temperature Classification

  • Class I Division 1 Group A - B - C - D
  • Class I Division 2 Group A - B - C - D
  • Class II Division 1 Group E - F - G
  • Class II Division 2 Group F - G