This part of IEC 60079 contains the specific requirements for the design, selection and
erection of electrical installations in hazardous areas associated with explosive atmospheres.
Where the equipment is required to meet other environmental conditions, for example,
protection against ingress of water and resistance to corrosion, additional methods of
protection may be necessary. The method used should not adversely affect the integrity of the
enclosure.
The requirements of this standard apply only to the use of equipment under normal or near
normal atmospheric conditions. For other conditions, additional precautions may be
necessary. For example, most flammable materials and many materials which are normally
regarded as non-flammable might burn vigorously under conditions of oxygen enrichment.
Other precautions might also be necessary in the use of equipment under conditions of
extreme temperature and pressure. Such precautions are beyond the scope of this standard.
These requirements are in addition to the requirements for installations in non-hazardous
areas.
This standard applies to all electrical equipment including fixed, portable, transportable and
personal, and installations, permanent or temporary.
It applies to installations at all voltages.
This standard does not apply to
– electrical installations in mines susceptible to firedamp;
NOTE This standard may apply to electrical installations in mines where explosive gas atmospheres other
than firedamp may be formed and to electrical installations in the surface installation of mines.
– inherently explosive situations and dust from explosives or pyrophoric substances (for
example explosives manufacturing and processing);
– rooms used for medical purposes;
– electrical installations in areas where the hazard is due to hybrid mixtures of combustible
dust and explosive gas, vapour or mist.
This standard does not take into account of any risk due to an emission of flammable or toxic
gas from the dust.
IEC 60079-14:2007 history
2020IEC 60079-14:2013/ISH2:2020 Interpretation sheet 2 - Explosive atmospheres - Part 14: Electrical installations design, selection and erection
2017IEC 60079-14:2013/ISH1:2017 Explosive Atmospheres - Part 14: Electrical installations design, selection and erection; Interpretation Sheet 1
2016IEC 60079-14:2013/COR1:2016 Explosive atmospheres - Part 14: Electrical installations design, selection and erection; Corrigendum 1
2013IEC 60079-14:2013 Explosive atmospheres - Part 14: Electrical installations design, selection and erection
2007IEC 60079-14:2007 Explosive atmospheres - Part 14: Electrical installations design, selection and erection
2002IEC 60079-14:2002 Electrical apparatus for explosive gas atmospheres - Part 14: Electrical installations in hazardous areas (other than mines)
1996IEC 60079-14:1996 Electrical apparatus for explosive gas atmospheres - Part 14: Electrical installations in hazardous areas (other than mines)
1970IEC 60079-14:1984 Electrical apparatus for explosive gas atmospheres. Part 14: Electrical installations in explosive gas atmospheres (other than mines).