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What is the difference between a multi-stranded cable and a single-stranded cable?

Views: 716     Author: Krystal     Publish Time: 2023-04-21      Origin: Site

Let's first understand the single-strand and multi-strand lines.  In home decoration, the so-called single-strand line refers to the BV line in most cases, that is, the commonly used BV2.5 level, 4.0 level, 6.0 level...  If you use simple words Explain that the single-strand wire is composed of a thick copper wire.  Due to the relatively small cross-sectional area, it is not easy to be oxidized, and the service life is relatively long.  As for multi-strand wires, there are currently two types on the market, namely BVR wires and multi-strand BV wires.  If you don't understand these two types of wires, then in simpler terms, BVR wires are single-core wires twisted together by multiple strands of copper wire, also called soft wires.  Another kind of multi-strand wire is used in many decorations now, but it is still used.  It is a multi-strand BV wire.  The 2.5 square wire is composed of 7 conductors with a diameter of 0.68mm;  Conductor composition.  What is the difference between single-strand and multi-strand?  The same wires can also be used in home decoration.  There is a difference between single-strand wires and multi-strand wires, which also leads to completely different results in usage rates.


When it comes to network cables, it should be divided into multi-strand network cables and single-strand network cables. The difference in their internal composition also leads to different usage standards and scenarios. Let's start with their definitions.

Category 5e Ethernet cable, RJ45 - RJ45, SF/UTP double shielded 22AWG single-core industrial outdoor single-strand, multi-strand cable and the construction of single-strand cable In the multi-strand wire, each copper wire is made of multiple strands of small gauge Wire "strands" are twisted together to form a helix, like a rope.

In a single-strand cable, each of the eight conductors consists of only one solid wire of a larger size, and the size of that wire is indicated by only one size number, such as 24AWG. More than 6 kinds of bulk cables, SF/UTP double shielding, 4 pairs of 26AWG multi-strand conductor performance comparison between multi-strand cable and single-strand cable

(1) The DC resistance of multi-strand cables is higher than that of single-strand cables. Single strand cables are better conductors.

(2) Since the surface area of the single-strand cable is smaller than that of the stranded cable, the single-strand cable is stronger and more resistant to impact and corrosion.

(3) Multi-strand cables are more flexible than solid cables and can better withstand bending.

The application environment of multi-strand cables and single-strand cables In industrial wiring, multi-strand twisted wire cables have greater flexibility, which is very beneficial to connect equipment that is often bent, such as distribution frames and cabinets (shorter distance, generally within 20- within 50 meters). In Power over Ethernet, since the internal temperature will rise during transmission, the insertion loss and DC resistance of multi-strand cables are relatively large. In order to ensure stable transmission, a single-strand cable is a better choice. Of course, on the horizontal line (the distance is longer, generally about 100 meters), a single cable is also a good choice. In general, how to choose these two cables still needs to consider environmental factors and usage methods, and consider the price and overall wiring.

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