MICC cable assemblies are ideal for power, control, instrumentation and thermocouple
applications in classified areas. The copper outer sheath is approved as a ground
conductor and the high current rating can satisfy virtually all power applications. In
addition m.i. cable features a low physical profile that allows unlimited bends without
MICC offers four types of cable assemblies:
- copper sheathed cable, copper conductors; UL fire rated for two hours at 1850ºF.
- twisted pair and shielded twisted pair with copper conductors, inner shield and outer
sheath, UL fire rated for two hours at 1850ºF.
- alloy 825 sheath, solid nickel conductors, fire rated for 30 minutes at 2200ºF or
nickel clad copper conductors, fire rated for 30 minutes at 2000ºF.
- stainless steel 316 thermocouple extension cable, all types
All cable assemblies are appropriate for the following conditions:
Fire and heat resistant
The inorganic construction of mineral insulated cable makes it extremely
fire and heat resistant. With an operating limit equal to the melting point of copper,
1982ºF, 1083ºC - it can easily withstand high temperatures and heavy current overloads.
It emits no smoke or toxic substances and allows no flame propagation. In contrast, a
third party test proved standard conduit and wire failed at 425ºF. These fireproof
properties make it the best choice for connecting motor operated valves, control stations,
plant shutdown systems, instruments and power devices that must remain operational under
actual fire conditions.
Mineral insulated cable and cable assemblies are extremely reliable as power and
control cables in hospitals, hotels, high rise buildings for emergency generators, fire
pumps, smoke and vent exhaust fans, communication circuits, multiplex alarm systems and
Other applications include wiring connections to electric heaters on boilers, tanks and
furnace wiring, metal smelters and lumber kilns, where regular pvc insulation hardens and
cracks and has to be replaced regularly.
The cable is solid and constructed with an extruded copper sheath that
makes it impervious to liquids. Neither water, process liquids or corrosive solutions can
migrate into the system. In copper and brass corrosive environments, or for direct burial
an extruded outer HDPE jacket may be specified to provide additional protection. PVC boots
cover the brass connectors. Epoxy end terminations provide lifetime sealing to
Industrial applications include light fitting connections in oil tanks that are
periodically washed out with kerosene.
M.I cable assemblies are US Coast Guard approved and are currently used to connect
warning beacons, fog horns and lanterns on offshore platforms. They also solve many
electrical wiring problems on oil tankers and marine vessels that operate under the worst
of climatic conditions.
Mineral insulated cable does not deteriorate at low temperatures and
assemblies are unaffected by continuous, even extreme changes in temperature.
Daily temperature changes cause condensation and moisture to accumulate in exposed
conduit above the seal packing, causing rust and corrosion to build up and block the
conduit drain. In cold temperatures this moisture can freeze, splitting the conduit or
seal and possibly damaging the instrument or electrical device, especially if the wiring
is top entry.
Because m.i. cable assemblies are solid and completely moisture resistant, this risk is
eliminated. Industrial applications include power wiring to motors in LNG tanks, freezer
rooms and instrument connections in harsh climates such as Alaska and Canada.
Magnesium oxide, the insulation in mineral insulated cable, provides superior radiation
resistance over any other material and for this reason, MICC cable assemblies are an
excellent choice for nuclear power plant applications.