| Definition: | area in which an explosive atmosphere is present, or may be expected to be present, in quantities such as to require special precautions for the construction, installation and use of electrical apparatus
NOTE 1 – IEC 60079-10 gives a classification of hazardous areas containing explosive gas atmospheres (see 426-03-03, 426-03-04 and 426-03-05).
NOTE 2 – IEC 61241-10 gives a classification of hazardous areas containing explosive dust atmospheres (see 426-03-23, 426-03-24, and 426-03-25).
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