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Why the cables are twisted?

Updated: 10/3/2023
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14y ago

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This helps reduce electromagnetic interference. One side of the cable may be nearer the source; if the cable is not twisted, the effects may accumulate. If it is twisted, the pattern alternates between voltage in one direction, and voltage in the opposite direction, so the interference will be cancelled, not completely, but to a great extent.

This helps reduce electromagnetic interference. One side of the cable may be nearer the source; if the cable is not twisted, the effects may accumulate. If it is twisted, the pattern alternates between voltage in one direction, and voltage in the opposite direction, so the interference will be cancelled, not completely, but to a great extent.

This helps reduce electromagnetic interference. One side of the cable may be nearer the source; if the cable is not twisted, the effects may accumulate. If it is twisted, the pattern alternates between voltage in one direction, and voltage in the opposite direction, so the interference will be cancelled, not completely, but to a great extent.

This helps reduce electromagnetic interference. One side of the cable may be nearer the source; if the cable is not twisted, the effects may accumulate. If it is twisted, the pattern alternates between voltage in one direction, and voltage in the opposite direction, so the interference will be cancelled, not completely, but to a great extent.

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14y ago
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14y ago

This helps reduce electromagnetic interference. One side of the cable may be nearer the source; if the cable is not twisted, the effects may accumulate. If it is twisted, the pattern alternates between voltage in one direction, and voltage in the opposite direction, so the interference will be cancelled, not completely, but to a great extent.

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10y ago

Twist are used in network cables to reduce noise from (RF) radio frequencies, power and (EMI) electromagnetic interference signals.

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Twisted-pair cables Coaxial cables


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fiber optic cables, coaxial cables, and twisted pair cables.


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What is lan wiring?

That is a LAN with cables as opposed to wireless LAN without cables. Network cables now mostly used for a wired LAN are UTP (unshielded twisted pair) CAT5E, although STP (shielded twisted pair) and CAT6 or CAT7 specifications are also used. Before COAX cables were used.


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The same reason telephone transmission wire pairs are twisted: to improve transmission by reducing noise pickup. See related question on twisted pairs.


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UTP stands for Unshielded Twisted Pair. This is a type of cable which has the shielding above the twisted cables for EMI/EMC protection.


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