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Homepage>BS Standards>13 ENVIRONMENT. HEALTH PROTECTION. SAFETY>13.230 Explosion protection>BS EN 60079-14:2014 Explosive atmospheres Electrical installations design, selection and erection
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BS EN 60079-14:2014 Explosive atmospheres Electrical installations design, selection and erection

BS EN 60079-14:2014

Explosive atmospheres Electrical installations design, selection and erection

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Standard number:BS EN 60079-14:2014
ISBN:978 0 580 93501 5

BS EN 60079-14:2014

This standard BS EN 60079-14:2014 Explosive atmospheres is classified in these ICS categories:
  • 13.230 Explosion protection
  • 29.260.20 Electrical apparatus for explosive atmospheres

This part of the IEC 60079 series contains the specific requirements for the design, selection, erection and initial inspection of electrical installations in, or 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 protection requirements may be necessary.

The requirements of this standard apply only to the use of equipment under standard atmospheric conditions as defined in IEC 60079‑0 . For other conditions, additional precautions may be necessary, and the equipment should be certified for these other conditions. For example, most flammable materials and many materials which are normally regarded as non-flammable might burn vigorously under conditions of oxygen enrichment.


The standard atmospheric conditions defined in IEC 60079‑0 relate to the explosion characteristics of the atmosphere and not the operating range of the equipment i.e.

  • Temperature: −20 °C to 60 °C;

  • Pressure: 80 kPa (0,8 bar) to 110 kPa (1,1 bar); and

  • air with normal oxygen content, typically 21 % v/v.

These requirements are in addition to the requirements for installations in non-hazardous areas.


For voltages up to 1 000 V a.c. or 1 500 V d.c. requirements of this standard are based on installation requirements in the IEC 60364 series, but other relevant national requirements can apply.

This standard applies to all electrical equipment including fixed, portable, transportable and personal, and installations, permanent or temporary.

This standard does not apply to

  • electrical installations in mines susceptible to firedamp;


This standard can apply to electrical installations in mines where explosive gas atmospheres other than firedamp can 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 flammable mist.


Additional guidance on the requirements for hazards due to hybrid mixtures of dust or flyings and flammable gas or vapour is provided in Annex M.

No account is taken in this Standard of the toxic risks that are associated with flammable gases, liquids and dusts in concentrations that are usually very much less than the lower explosive limit. In locations where personnel may be exposed to potentially toxic concentrations of flammable material, appropriate precautions should be taken. Such precautions are outside the scope of this Standard.

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