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MINERAL INSULATED WIRING CABLE SYSTEM

The MICC & TRM Group of companies was formed by ex-employees of BICC cables in 2001.The directors and owners of the MICC and TRM businesses have all worked with mineral insulated (MI) cable for more than 30 years and bring to the industry over 300 years of cumulative experience, knowledge and enthusiasm required by our customers.

Our quality system is certified to ISO 9001:2008 accreditation and our MI wiring cables are manufactured to meet BSEN60702:2002. Our MI wiring cable also meets the requirements for LPCB certification, specifically BS6387. We however took this much further by independently testing our cable to achieve the CWZ 'Enhanced' test by using the same piece of cable for all three tests. This is undoubtedly a more realistic test giving the conditions of a real-world fire situation and similar to the stringent London Underground fire cable test.

MICC MI cable is a stand-alone product, it is inorganic thus does not burn, 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. Fire Resistive (FR) cable no longer meet this standard and have been removed.

The title of the standard is:

Specification for performance requirements for cables required to maintain circuit integrity under fire conditions. The standards purpose is to determine a cable's ability to function under differing conditions of: Fire, Fire with water spray, Fire with mechanical shock.

Resistance to Fire

The cable is tested by exposure to gas burner flames while passing a current at its rated voltage.

Resistance to Fire

The cable is again exposed to flames at 650°C for 15 minutes whilst passing a current of 250mA at rated voltage and then the spray is turned on to give exposure to both fire and water for a further 15 minutes.

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