Rules for hazardous (classified) locations can be found in Chapter 5 [Special Occupancies] of the National Electrical Code (NEC). What are these specific locations, and why is the word “classified” in ...

Determining whether or not an area is going to be considered a hazardous (classified) location is critical to the type of construction, wiring methods involved, and the overall safety of the intended ...

Sometimes electrical equipment must be installed in areas where combustible vapors and gases are used or may be present. These are commonly referred to as "hazardous locations" and are defined by the ...