This Article is for UL / CUL Hazardous Location Lighting of South America, including UL1598, UL844 Hazardous Location Safe Regulations.
Safety regulations for UL1598 general area lamps
Risk of Fire
Risk of Electric Shock
UL844 - Safety regulations for hazardous area lamps
- Part I – Class I, Division 1, Groups A, B, C, D locations
- Class II, Division 1, Groups E, F, G locations
- Part II – Class I, Division 2, Groups A, B, C, D locations
- Part III – Class II, Division 2, Groups F, G locations
- Class III Locations
- Part IV – Portable Luminaires
- Part V – Manufacturing and Production Tests
- Part VI – Marking
Hazardous Location Definition
Class = classification of explosive substances
a) Class I : Flammable Gases,Vapors or Liquids
b) Class II : Combustible Dusts
c) Class III : Ignitable Fibers and Flyings
Division / Zone = area, the frequency of the presence of hazardous materials in an explosive environment
a) Division 1 : An area in which an explosive mixture is exist all of the time or some of the time under normal operation.
b) Division 2 : An area in which an explosive mixture is not likely to occur in normal operation and if it occurs it will exist only for a short time.
Group = group, refers to a specific group of flammable and explosive substances
Class I Flammable Gases,Vapors or Liquids have A,B,C,D, total 4 Groups.
a) Group A : acetylene
b) Group B : hydrogen
c) Group C: ethylene
d) Group D : propane
Class II Combustible Dusts have E,F,G, total 3 Groups.
a) Group E : metal dusts = Conductive dust
b) Group F : coal dusts = Non-conductive dust
c) Group G : grain / power / saw / chemical dusts = Non-conductive dust