In daily life, the wires we see are all taken for granted, but cables mostly remain at the level of "heard of, but never seen." So, what exactly is the difference between wires and cables? Let us tell you some basic knowledge about wires and cables.
A wire is a conductor used to transmit electrical energy or electrical signals, while a cable typically has a core consisting of two or more mutually insulated wires, with an overall insulation and reinforcement layer on the outside, used to transmit electrical energy or electrical signals. In simple terms, a wire is a general term for conductors, mostly referring to commonly used single-conductor insulated wires, with common models such as: BV, BVR, etc.; whereas a cable is relatively larger, with thicker conductors, more cores, insulation, and other characteristics, and is further divided into power cables, control cables, computer cables, overhead cables, communication cables, mineral fire-resistant cables, etc.
To understand them separately, they can be roughly divided as follows:
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Wires and cables have different structures. Wires generally consist of a single-core or multi-strand copper conductor, with insulation added outside the conductor; whereas cables generally consist of one or several insulated wires, with an additional sheath outside the insulation. Depending on the cable model, application, and specified characteristics, the insulation materials and sheath materials used also vary.
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Wires and cables have different sizes. Because of their simple structure, wires are basically small wires below 10 square millimeters (10mm² refers to the conductor cross-sectional area), while cables, due to their complex structure and specific requirements, are basically thicker wires above 10 square millimeters.
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Wires and cables have different transmission capabilities. As simple, small wires, the resistance that conductors in wires can withstand is limited, and for high-power operations, cables are definitely needed. Wires basically use copper cores, while cables can use either copper or aluminum cores. Of course, copper-core conductors are definitely superior to aluminum-core conductors in terms of transmission capability.
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Wires and cables have different degrees of flexibility. Wires are mostly used for household, installation, fire protection, and lighting applications, and depending on the usage, single-core rigid conductors or multi-strand flexible conductors are chosen; cables, due to their special structure, are relatively harder, making them suitable for engineering installation, water and electricity projects, and peripheral power grids.
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Wires and cables have different rated voltages. Most wires have rated voltages of 300/500V or 450/750V, while cables have rated voltages ranging from 0.6/1KV to 26/35KV, varying from low voltage to high voltage.
In short, wires and cables are general terms. It can be commonly understood as: those with a small diameter are called "wires," and those with a large diameter are called "cables"; those with a simple structure are called "wires," and those with a complex structure are called "cables." With the ever-advancing progress of technology, many types now have "cables within wires, and wires within cables." Everyone can choose the wires and cables suitable for their own actual situation.
