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Home > content > Zone concept advances. (classification of hazardous locations) Under the present NEC rules, hazardous (classified) locations are divided into divisions depending on how frequent the hazardous atmosphere or dusts are expected to be present. If the hazardo

Zone concept advances. (classification of hazardous locations) Under the present NEC rules, hazardous (classified) locations are divided into divisions depending on how frequent the hazardous atmosphere or dusts are expected to be present. If the hazardo

Jul. 1, 1995  | Electrical Construction and Maintenance
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