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Cable twisting length is not standardized. In a typical cable there are 1.5 to 2 twists per cm in Cat-5(e) and 2 or more twists per cm in Cat-6. One cm equals 0.393701 inches. Within a single cable, each coloured pair have different twist lengths. Each cable manufacturer's twists per pair is usually different from another manufacturer.
blabla ^ What the hell kind of answer is that? :P UTP stands for Un-shielded Twisted Pair, and it is these twists that help to avoid crosstalk.
cross talk
Twisted pair cable is a type of wire in which two conductors of a single circut are twisted (paired) together for the purposes of canceling out electromagnetic interferance from outside sources and crosstalk between neighboring pairs of wires. The amount of twists per meter changes along the length of the cable.
The primary purpose of twisting wires/cables is retaining flexibility while increasing the ampacity (current capacity of wire/conductor). Twisted wire/cable is more flexible than a solid wire with same ampacity.
Twisted pair wires have twists that are a certain number of twists per foot depending on twisted bundle size. The purpose of the twists is so the magnetic field that rises and collapses around each wire within the twisted pair cancel each other out since they are of opposite polarity. The coaxial cable is just a single conductor within a grounded braid or foil jacket to help prevent unwanted magnetic fields (signals) from entering the actual signal wire that is in the center.
if by "twisted pair cable" you mean a cat5 cable which is commonly used as an ethernet cable. then it´s made of copper.
The twisting in a twisted pair cable helps make the cable immune to electromagnetic interference. These cables are of two types: Shielded and unshielded twisted pair.
Shielded Twisted pair cable
Twisted pair wiring is a digital signal.Coaxial cable is an analog signal.
with RJ 45 conecter & unshilded twisted pair cable