What types of fire ratings are valued by UL American Standard certified cable companies?

UL AFSL certified cable companies look at the following fire ratings: 1. UL AFSL certified cable companies are analyzed from the commercial grade. This contains CM copper cable and its OFN or OFC fiber optic cable line. Commercial-grade cable line than the level of the trunk level is low, its bundles of cable line on the flame spread to within 5m must extinguish itself, but there is no fan mandatory blowing restrictions, and there is no smoke or toxicity specifications. Commercial grade cable lines are commonly used in horizontal cabling, generally bundled together with. 2, UL American Standard certified cable company from the booster level to analyze. This includes CMP copper cables (UTP and ScTP) and OFNP or OFCP fiber optic cables, which are the highest rated cables. On a bundle of booster grade cables, when a fan is forced to blow on the flame, the flame on the cable will extinguish itself within 5m of spreading. Moreover, this cable does not emit toxic smoke or vapor when it burns or at extremely high temperatures due to the chemicals contained within. In the United States, booster-grade cable is the cable of choice. In communication cabling, it is usually installed in air return pressurization systems used in ventilation ducts or air handling equipment.3. UL American Standard certified cable companies analyze it from the household level. This refers to the CMX copper cable, there is no fiber optic classification, is UL fire rating in the lowest level. A home-grade cable on the flame, when it spreads to within 5m must extinguish itself, but no smoke or toxicity specification. Household grade cable should generally only be used in a home or small office system where each cable is laid individually. It should not be laid in bundles, because bundles of cables have a very different way of spreading the flame from one cable.4. UL American Standard certified cable companies analyze from the trunk level. This contains CMR copper cables and their OFNR or OFCR fiber optic cable lines, which are the cable lines with a solid second place in the class. Bundles of trunk grade cable in the fan mandatory blowing conditions, the flame on the cable spread to within 5m must extinguish itself, however, it does not have smoke or toxicity specifications. Countries other than the United States generally in the building trunking and horizontal cable lines with this type of fire-rated cable. 5, UL American Standard certified cable company from the general level to analyze. This contains CMG copper cable and its OFNG or OFCG fiber optic cable line. This class of cable characteristics and commercial grade is similar.

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