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UL 1569 Document Information:
Title
UL Standard for Safety Metal-Clad Cables
Underwriters Laboratories Inc.
Publication Date:
Aug 31, 1999
Scope:
These requirements cover round or flat metal-clad cables that
contain 18 AWG – 2000 kcmil insulated circuit conductors with or
without one or more optical-fiber members, all enclosed in armor
consisting of interlocked metal strip or a smooth or corrugated
metal tube. Round cables contain one or more insulated circuit
conductors. Flat cable contains two or three insulated circuit
conductors. These electrical and hybrid electrical/optical-fiber
cables are for use (optical and electrical functions associated in
the case of a hybrid cable) as Type MC cable in accordance with
Article 330 and other applicable parts of the National Electrical
Code.
These requirements cover round or flat armored cables that have
thermoplastic or thermoset insulation and are for use at potentials
not exceeding 600 V (thermoplastic) or 600 or 2000 V (thermoset)
where subjected to temperatures not exceeding 75°C (167°F) or 90°C
(194°F), depending upon the voltage and temperature ratings of the
circuit conductors in the cable. Cables with 600 V conductors that
also include one or more optical-fiber members have "-OF"
supplementing the type letters and are limited to carrying optical
energy that has been ruled not hazardous to the human body.
Type MV (medium-voltage) cables rated for 2400 – 35000 V are
covered in separate requirements. A multiple-conductor Type MV
cable with a smooth (other than lead) or corrugated metal sheath or
with interlocked metal armor may be marked for use also as Type MC
cable.
These requirements do not cover Type AC armored cables (see the
Standard for Armored Cables, UL 4). Metal-clad cables for use in
Division 1 and Zone 1 hazardous locations are required to comply
with this standard and the Standard for Metal-Clad Cables and
Cable-Sealing Fittings for Use in Hazardous (Classified) Locations,
UL 2225.
These requirements do not cover the optical or other performance
of any optical-fiber member or group of such members. See 8.3.
A cable to which the designation "ST1" (signifying "limited
smoke") is applied as a type-letter suffix, complies with the test
criteria for smoke release and for cable damage height stated in
the Standard for Vertical-Tray Fire-Propagation and Smoke-Release
Test for Electrical and Optical-Fiber Cables, UL 1685. See Section
30 (test requirement) and 38.1 (marking requirement) of Metal-Clad
Cables, UL 1569.
Deleted March 6, 2003
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