Multicore cables contain more lines than a typical cable of that type, and are common in construction, audio and video work, and civil construction. They have all the necessary parts of a single core cable but are wrapped up with other lines. They are found in condominiums and city infrastructure.
A multicore cable is an electrical cable that contains more lines than there would normally be in a cable of that type. If a cable typically has four lines in it, it’s not multicore if it only has those four lines. If that same cable had four other lines, for a total of eight, it would be a multi-core cable. These cables are very common in construction, audio and video work and civil construction. The term is generic enough that multicore cables can be of any design or function.
Typically, an electrical cord is a simple thing. A central core made of conductive material, often copper, is covered with an insulator. That insulator is then covered in a hard sheath to protect the core, and the whole thing is covered in plastic to prevent oxidation and provide further protection. While some cables may use stranded cores, plating the conductor, or even forego a layer entirely, the basic design rarely changes much.
While the basic design of a cable never really changes, things like the types and sizes of conductor used or even the thickness of the layers can impact the ultimate purpose of the cable. Some cables have multiple cores per function. These cables will typically have multiple cores each in an insulator and then the hard jacket and plastic jacket covers the cores as a single cable. These cables are not multicore as they are designed as single cables.
To be a multicore cable, the secondary cable must fit complete within the largest enclosure. This means that the cable has all the necessary parts of a single core cable, but is wrapped up with other lines. Sometimes, multicore cables leave out the hard protective jacket to prevent the bundle of cables from becoming too heavy. The end of the cable will often have a large input panel where a variety of different patch cables can be plugged into the larger cable. This design is particularly common in audio and video work where this type of multicore cable is called a snake.
Outside of media uses, multicore cable is found in many places. Condominiums will often have multicore coaxial cables providing cable television to the apartments. These cables often lead to a single floor or subsection, and every link in that area runs through the same multicore cable. These buildings sometimes bundle other cables as well, depending on usage and load. This same process is common in city infrastructure where power, coax, and telephone wires are run together on a single trunk line.
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