Coffee Break Training: Inspection Techniques: Electrical 'Classified Locations' (Part 2) [open pdf - 334KB]
"The National Fire Protection Association (NFPA) 70®, 'National Electrical Code'®, Chapter 5 'Special Occupancies' provides descriptions of the various areas that might be classified as hazardous where electrical equipment could cause a fire or explosion. These areas are divided into 'classes' for general descriptions and are further detailed into 'divisions' for specific hazards. This week's Coffee Break Training will identify the three hazard classes, and next week it will explain the 'divisions.'"
Coffee Break Training - Fire Protection Series No. FP-2011-20
United States Fire Administration: http://www.usfa.fema.gov/