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Why Type MI is Specifically UL2196 Approved Fire-Rated Cable For Use in Hospitals

While designing commercial buildings, such as healthcare facilities, it is easy to overlook critical aspects of code.  

What is unique about healthcare facilities is the need to ensure that occupants can shelter-in-place in the event of an emergency.  It is extremely important for electrical continuity of life safety circuits. Furthermore, it is vital that these cables do not create any toxic or flammable smoke in the event of fire.

Did you know that according to NEC Article 517.31 (C)(3)(1), the mechanical protection of emergency feeders in healthcare facilities must be done in very specific ways?  It states that ONLY the following wiring methods are allowed:

1.    Nonflexible metal raceways, Type Mineral Insulated (MI) cable, type RTRC marked with the suffix -XW or Schedule 80 PVC conduit.  

Type Metal-Clad (MC) cable is not allowed as acceptable according to the NEC, though some engineers have opted to use this type of cable in building design, not being aware of the NEC’s mechanical protection requirement.

MI’s superior mechanical properties and inorganic composition, which do not contribute any potentially toxic or flammable smoke under fire conditions, has earned NEC approval.   Supported by 50+ years of electrical sector confidence, MI keeps the electricity flowing to emergency equipment when it matters most.

To make sure nVent PYROTENAX System 1850 MI cables are providing power to the life safety equipment in your healthcare facility, please download our specifications.

Download Our Specifications