What would you think are the most common causes of fires in commercial buildings? According to the National Fire Protection Association (NFPA), the most common causes of fires in commercial buildings are as follows: (1) cooking equipment, (2) heating equipment, (3) electrical and lighting equipment, (4) smoking materials, and (5) arson. By knowing in advance what the likely causes of a commercial fire may be, your business can take the proper precautions to help prevent damag