The cable with the highest requirements (PlenumCable), the applicable safety standard is UL910. CMP cables are usually installed in ventilation ducts or air return pressurization systems used in air handling equipment. FEP/PLENUM materials that meet the UL910 standard have better flame retardant properties than low-smoke halogen-free materials that meet the IEC60332-1 and IEC60332-3 standards. It has good flame retardant properties and produces low smoke concentration when burned.
2) Trunk level – CMR level (RiserFlameTest) is a commercial grade cable (RiserCable) in the UL standard, and the applicable safety standard is UL1666. The experiment stipulates that multiple specimens are laid on a simulated upright shaft. Trunk-level cables do not have smoke concentration specifications and are generally used for vertical and horizontal wiring on floors.
3) Commercial grade – CM grade (Vertial Tray Flame Test) is a commercial grade cable (General Purpose Cable) in the UL standard, and the applicable safety standard is UL1581. Generally, it is only used for horizontal wiring on the same floor and should not be used for vertical wiring on the floor.
4) General level-CMG level (Vertial Tray Flame Test) is a general-purpose cable (General Purpose Cable) in the UL standard, and the applicable safety standard is UL1581. Generally, it is only used for horizontal wiring on the same floor and should not be used for vertical wiring on the floor.
5) Household grade – CMX grade (vertical wire flame test) is a household grade cable (RestrictedCable) in the UL standard, and the applicable safety standard is UL1581. This grade also has no smoke or toxicity specifications and is intended only for use in home or small office systems running a single cable. Such cables should not be laid in bundles and must be sleeved.
