NEC versus IEC methods of protection for Class I, Division 1 versus Zone 1, hazardous (classified) locations-a comparative analysis

摘要

The two major systems in the world for dealing with hazardous (classified) locations are examined. These two systems are those of the International Electrotechnical Commission (IEC) and the National Electrical Code (NEC). The classification systems are compared, as are the methods of protection for Class I, Division1, and Zone 1.