scope:

This standard contains the specififc requirements for the design, selection and erection of electrical installations in potentially explosive gas atmospheres. Electrical installations in hazardous areas shall also comply with the appropriate requirements for installations in non-hazardous areas. This standard applies to all installations in hazardous areas wether permanent, temporary, portable, transportable or hand-held. It applies to installations at all voltages. This standard does not apply to: - electrical installations in mines susceptible to firedamp; - electrical installations in areas where the hazard is due to ignitable dusts or fibres; - inherently explosive situations, e.g. explosives manufacturing and processing; - rooms used for medical purposes.