What is Mineral Insulated Cable (MICC)?

Seamless Tube Mineral Insulated Cable is without question the ultimate fire survival electrical cable system.

Mineral Insulated Cable is the only wiring system that can survive real-world fire conditions.  

  • It provides proven up to 3 hour escape time in ‘Real World’ fire conditions.
  • The only electric cable to pass modern furnace tests – i.e. German standard ISO834-1, test DIN 4102 1000°C 90mins.
  • The only cable technology approved & listed by UL2196 for ‘unrestricted installation’.
  • Passes the BS6387 / BSEN50200 ‘Enhanced’ test.

Soft skinned fire resistant cables are a common alternative. However, if the Safe Evacuation Time is longer than 10 minutes we feel that this is not a safe solution. To learn more about this please check out our whitepapers.

High Operating Temperatures

  • Copper sheath (Survives for 3hrs+ @ 950°C)
  • Copper sheath (Survives for 2hrs+ @ 1010°C)
  • Alloy 825 sheath (Survives for 2hrs+ @ 1200°C)



MI cable is composed of inorganic materials – the copper conductor or conductors, highly compressed magnesium oxide insulation (MgO), and the copper or Alloy 825 Sheath.
As stated in the IEC228 standard, the melting point of the copper conductor and sheath is 1083°C. The melting point of the high purity MgO is 2800°C. MI Cable will continue to function reliably in environmental temperatures up to 1000°C. This is the unique ability of MI wiring cable.
MI Cable is a stand-alone product that contains no polymer, uses no zinc and does not require conduit protection. It is unaffected by the issues associated with cable-in-conduit systems and there have been no changes to the product that has consistently met the requirements for a two-hour fire-resistive system when tested to UL 2196 and ULC–S139.
Our Seamless tube manufacturing technique which ensures a totally flawless solution
We can also serve the outer of the MI cable with an LSF sheath to your colour requirements as needed. 




MICC Group’s MI Wiring Cables are manufactured, tested and LPCB approved to BS EN 60702-1.


The LPCB certificate makes reference to the following standards:


BS EN 60702-1: 2002 - Mineral Insulated Cable with a rated voltage not exceeding 750V


BS 6387: 2013 – Performance requirements for cables required to maintain circuit integrity under fire conditions


BS 5839-1: 2002 + A2: 2008 – Fire detection and alarm systems for buildings. Code of practice for system design, installation, commissioning and maintenance.




MICC terminations are tested in accordance with BS EN 60702-2


Quality Certification


Quality systems Assessed to ISO 9001


CE Mark


MICC cable drums, reels and termination packaging are marked with the CE Mark as required, except for terminations primarily intended for installation in potentially explosive atmospheres which are not marked because the low voltage directive does not apply.


Other Standards & Codes of Practice Referring to MI Cables


BS 8434 – Methods of test for assessment of the fire integrity of electric cables


IEC 60331 – Test for electric cables under fire conditions


BS EN 5588- Fire Precautions in the design, construction and use of buildings


BS EN 5266 –Emergency Lighting. Code of practice for the emergency lighting of premises.


BS 7671: 2008 – Requirements for Electrical Installations. IEE Wiring Regulations.


BS 60079 – Code of Practice for the selection, installation and maintenance of electrical apparatus for use in Potentially Explosive Atmospheres. 


Mineral Insulated Copper Wiring Cables

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