Hazardous Location Certifications 101

Hazardous Location Certifications 101

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Electrical equipment that is used in a hazardous (classified) area is regulated by local laws and guidelines, and is required to be compliant to the relevant protection schemes and certifications as specified within these areas. There are a multitude of certification schemes around the world, but the three mainstream certifications for electrical equipment in hazardous areas are ATEX (Europe), IECEx (International) and either the Class/Division or Class/Zone System (North America). While each of these certification groups require unique standards and verification procedures for certification they also leverage similar terminology and practices with respect to testing, marking and ensuring standards are attained for safe operation of electrical equipment. This article explains each of these certifications in laymen’s terms and assists in the interpretation of the unique character codes associated with each certification standard. 


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