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2022

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06

Distinguishing between wires and cables


Distinguishing between wires and cables Wires can consist of one or more flexible wires covered with a soft covering; cables consist of one or more different insulated wires covered with a tough metal or rubber outer layer. Generally, the difference between cables and wires in enterprises is that they are composed of three main parts: core wires, insulation, and protective outer sheath.

Difference between wires and cables

Wires can consist of one or more flexible wires with a soft covering; cables consist of one or more different insulated wires covered with a tough metal or rubber outer layer. Generally, cables and wires are composed of three main parts: core wires, insulation, and protective outer sheath.

Common methods for analyzing cable characteristics are as follows: CEF - Ethylene propylene rubber insulated chloroprene rubber sheathed, flame-retardant cable for marine use. Cvv - Polyvinyl chloride insulated polyvinyl chloride sheathed flame-retardant power cable for marine use. Oxygen cabin wires often use BV, BX, RV, RVV series products, where: BV - copper core polyvinyl chloride insulated wire, allowing for long-term use at temperatures of 65℃ and -15℃, with a voltage of 500V AC and 1000V DC, suitable for fixed indoor and outdoor installation. BX - copper core rubber insulated wire, suitable for indoor use at temperatures up to 65℃. RV - polyvinyl chloride insulated single-core flexible wire, usable at temperatures of 65℃ and -15℃, with a voltage of 250V AC and 500V DC, used for internal wiring of instruments and equipment. Rvv - copper core polyvinyl chloride insulated and sheathed flexible wire, suitable for long-term use at 105°C, with a voltage of 500V AC and 1000V DC, used in damp and mechanically demanding environments, often used in situations involving movement and bending.

In fact, there is no strict boundary between "wire" and "cable." Products with few cores, small diameter, and simple structure are usually called wires in China; products without insulation are called bare wires; other products are called cables. Larger (>6m2) conductor cross-sectional areas are called large wires, smaller (<6m2) are called small wires, and insulated wires are also called power distribution wires. Easy to understand! Cables generally have two or more layers of insulation, mostly multi-core structures, wound on cables or reels, and lengths generally exceed 100 meters. Wires generally have single-layer surface insulation, single-core, and are 100 meters per roll. Common cable types: VV indicates polyvinyl chloride insulation (one V) and polyvinyl chloride sheath (two V). YJV22 indicates cross-linked polyvinyl chloride insulation (YJ), polyvinyl chloride sheath (V), and steel tape armor (22). Models with "ZR" or "FR" are flame-retardant cables (wires). Aluminum wires are marked with "L": BVV-PVC insulated and sheathed copper wire, BV-PVC insulated copper wire, BYJ-copper core cross-linked polyolefin insulated wire, Bvr-PVC insulated copper wire, BX-rubber insulated copper wire, RHF-chloroprene rubber sheathed copper wire.

Small diameter is called "wire"; large diameter is called "cable".

Simple structure is called "wire"; complex structure is called "cable." However, with the expansion of usage, there are many types of "wire in cable" and "cable in cable." Therefore, there is no need for strict distinction.

In daily life, people call home wiring as wires and power engineering cables as cables. Wires mainly include bare wires, winding wires, power cables, communication cables and optical cables, electrical equipment, etc.






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