Group of electrical equipment for explosive atmospheres> classification of electrical equipment related to the explosive atmosphere for which it is to be used
Note 1 to entry: Electrical equipment for use in explosive atmospheres is divided into three groups:
- Group I: electrical equipment for mines susceptible to firedamp;
- Group II (which can be divided into subgroups): electrical equipment for places with an explosive gas atmosphere, other than mines susceptible to firedamp;
- Group III (which can be divided into subgroups): electrical equipment for places with an explosive dust atmosphere.
Source: IEC 60079-14:2013, Explosive atmospheres – Part 14: Electrical installations design, selection and erection, Edition 5.0, November 2013. Global Standards