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Section 7. Electrical equipment of special installations
Electrical installations in hazardous areas. Application area
Encyclopedia of radio electronics and electrical engineering / Rules for the installation of electrical installations (PUE)
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7.3.1. This chapter of the Rules applies to electrical installations located in explosive zones indoors and outdoors. These electrical installations must also meet the requirements of other sections of the Rules to the extent that they are not changed by this chapter.
The selection and installation of electrical equipment (machines, apparatus, devices), electrical wiring and cable lines for explosive zones are made in accordance with this Chapter of the Rules based on the classification of explosive zones and explosive mixtures.
Requirements for battery installations are given in Ch. 4.4.
The instructions of this chapter do not apply to underground installations in mines and to enterprises whose installations are explosive as a result of the use, production or storage of explosives, as well as to electrical equipment located inside technological apparatuses.
 See other articles Section Rules for the installation of electrical installations (PUE).
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