Cable classification

PVC
Sheath PVC sheathed cables are the easiest to use and are often referred to as general purpose cables. These types of cables are intended for installation in places where there are no special fire safety requirements. An example is the connection of a system unit and a monitor at home and in the office. When burning, PVC-coated wires can release hydrogen chloride. Chlorine serves as a free radical scavenger and increases the fire resistance of the material. Although hydrogen chloride gases can also be hazardous to health in origin, hydrogen chloride will decompose on surfaces, especially in areas where the air is cold enough

Plenum (CMP) Rated Cable
Plenum cables are designed for installation through ductwork (often called plenums). Plenum cables must be self-extinguishing and not re-ignited. They also emit less smoke than traditional PVC cables. Smoke and gas are toxic. This requirement is usually imposed by the fire safety class and refers to particularly stringent fire safety requirements that cables of this type must comply with. Complies with NFPA-262 and UL-910.

Low Smoke Zero Halogen (LSZH, LS0H) Rated Cable
LSZH-sheathed cables are intended for use where both young and low corrosive gases are required. Used on board ships and computer communications centers where toxic and acidic fumes and gases can harm people and equipment. For example, halogen contains fluorine, chlorine, bromine and iodine. When burned, these materials give off acidic fumes that can harm people and computer equipment. Low smoke means that the cable should not emit black soot and smoke like PVC cables. Such cables will self-extinguish, but they do not meet UL-910 or UL-1666 for Plenum cables or riser cables.

Riser (CMR) Rated Cable
Compliant with UL-1666. Designed for use in vertical trays such as cable routes between floors on risers or in elevator shafts. These spaces cannot be used for ambient air. These cables must self-extinguish and also prevent the flame from spreading up the cable.

Purpose General (CM, CMG, CMx) Cable  (main cable application)
will burn and partially samogasitsya. Not for use under raised floors and plenum cavities. Often these cables are used for workstations and patch cords. Conforms to UL-1581.

The Use Cable Limited  (Limited use cable)
This cable has certain restrictions on open laying, for example, it is allowed to be used only in residential buildings, it is allowed to lay only in pipes made of non-combustible material, or its maximum diameter is limited, etc.

Retardant polyvinylchloride Fire (FR-PVC)  (noncombustible PVC)
sheath of flame-retardant polyvinyl chloride (FR-PVC) has better fire resistant qualities than conventional PVC sheath. It has significant advantages in lower acid production and smoke generation. Chlorine emissions from flame retardant PVC sheaths are significantly higher (5%) than conventional PVC. Non-combustible PVC has good insulating properties at temperatures below 100 ° C.

The Flame Retardant the Free Halogen (HFFR) cables'  (halogen-free fire resistant cables)
Halogen-free flame retardant cables help prevent cable fires from the outset, and even if the cable does catch fire, produce significantly less accompanying smoke. Therefore, they are especially important to protect human and animal life. For HFFR cables, the main advantage remains the mechanical and electrical properties and the best fusible processability. This can also be achieved by optimal adhesion of fillers and polymers or by crosslinking polyethylenes. Advantages of a halogen-free flame retardant compound: increased stress level, high fire resistance, very low water absorption by the polymer, significantly better electrical properties, increased throughput of cable products, improved mechanical properties.

PE  (polyethylene)
Polyethylene is a polycrystalline thermostatic material and one of the most widely used plastics. As a rule, it is characterized by plasticity, flexibility and low strength. There are two main types of polyethylene: low density polyethylene (LPDE - low density polyethylene) and high density polyethylene (HDPE - high density polyethylene).

High density polyethylene (HDPE  )
HDPE is a more durable version of polyethylene. It is harder, stronger and slightly heavier than low density polyethylene, but less elastic. The use of UV stabilizers (carbon black) improves the weather resistance, but stains the polyethylene black. HDPE is also less transparent and more resistant to high temperatures (120 ° C for short periods, 110 ° C continuous). High strength polyethylene has many advantages: chemical and corrosion resistant, lightweight, poor moisture absorption, non-staining (non-staining), non-toxic, high tensile strength