UL 758-2022 pdf download
UL 758-2022 pdf download.Appliance Wiring Material.
5.8 Separator
5.8.1 The insulation shall be prevented, by the rnanufactunng process or by a separator constructed for the intended use, from penetrating between the strands of a stranded conductor for thermoset insulation.
58.2 A separator used between a conductor arid Insulation shall be clearly distinguishable from the conductor once the insulation Is removed. The color shall be other than green or green and yellow; however, a separator that is solid. stnped, or appears in some other pattern, complies with the intent of this requirement.
5.9 Semi-conductive polymeric layer
5.9.1 A semi-conductive polymeric layer may be provided over one or more conductors.
5.9.2 The layer shall be clearly distinguishable from the conductor once the insulation is removed. The color shall be other than green or green and yellow; however, the layer that is solid, striped, or appears in some other pattern, complies with the intent of this requirement.
6 Optical Fiber Member(s)
6.1 General
6.1,1 A cable is not prohibited from being composed entirely of optical-fiber members or a combination of electrical conductors and optical-fiber members.
6.2 Cable composed of both current-carrying conductors and optical-fiber members
6.2.1 OptIcal-fiber members in a cable shall be cabled alone or as a group with the same direction and with the same length of lay as the electrical conductors. In the performance of a current-carrying cable. each optical-fiber member is to be evaluated as a fler.
62.2 A group of optical-fiber members without any electrical conductor(s) that includes one or more noncurrent-carrying metal parts such as metal strength elements or metal vapor barriers may be used in a group of optical-fiber members without any electrical conductor(s). The construction of these parts is not specified. Each such part shall be physically and electrically isolated from any bare grounding conductor in the cable and shall be earth-grounded when the cable is installed.
6.3 Cable composed entirely of optical-fiber members
6.3.1 Construction and requirements
6.3,1.1 The optical fiber cable shall consist of one or more optical fibers, and may employ a buffer, a covering, and/or an overall jacket.
6.3.1.2 The thickness of the buffer is not specified. Buffers used as the outermost layer in a wire or cable construction shall be subjected to the same requirements as a jacket.
7 Insulation
7.1 General
7.1.1 A conductor shall be insulated for its entire length. The insulation shall:
a) Be applied directly to the surface of the conductor or to any separator;
b) Cover the conductor or any separator completely: and
c) Not have any defects that are visible with non’nal or corrected vision without magnification.
The insulation may be applied simultaneously in more than one colorllayer provided that all layers are not separable and are of the same base compound (differ only in color). The thickness of each individual layer Is not specified.
7.2 Materials
7.2.1 Specimens of solid, single layered and multi-layered non-separable extruded insulations and each layer of separable multi-Layer extruded Insulations removed from finished insulated conductors shall meet the appropriate values of unaged and oven aged elongation and tensile strength provided in Table 7.2. and Table 7.3. or any of the materials described in the Materials column in Table 7.1. Specimens shall be tested in accordance with the Physical Properties. Unaged and Air Oven Aged. Section 14. or shall be evaluated in accordance with the test, Dry temperature rating of new materials (long term aging test) in the Standard for Wire and Cable Test Methods. UL 2556.
7.2.2 Solid single-layer and multi-layered extruded insulation made from materials which are not
described in Table 7.1, or Table 7.2, and Table 7.3, shall also be subjected to the Flexibility Test, Section 21, after 150 days of aging at the temperature described the test Dry temperature rating of new materials (long-tern aging test) in the Standard for Wire and Cable Test Methods, UL 2556.
