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Type of Wire Conductor (Date: 2014-12-08)

Type of Wire Conductors

TYPE Cross Section Description
Solid conductor Solid Conductor A single strand, uncombined conductor.
It is low cost but is generally not used for electronic wire & cable as its flexibility, handling of bend
resistance & reliability is poor.
The central conductor for coaxial cable & small size data transmission cable etc.
Used in fixed wiring.
Concentric stranded
Stranded Conductor It has a single or multiple strands in the center & around each layer are combined concentric shaped
Generally, the single center core’s : 7, 19 or 37 strands has many adaptations.
Flexibility & the handling of bend resistance is maintained & it also has a s
Bunch stranded conductor Bunch Stranded wire Multiple strands are bundled together & combined in the same direction.
When compared to the concentric stranded conductor, regarding the construction & stranding -
surface unevenness is a failing. However, with its low price & suitability to mass production & also its
sufficient handling ability with regards to practical usage & reliability, it is for a variety of reasons the
most generally used conductor for electronic wire & cable.
Rope lay conductor Rope Lay Wire Once it is a bunch stranded conductor (child strand), it is once again combined into a concentric
stranded conductor (parent strand). As it has rope lay strands it is called a rope lay conductor. It is the
same as a wire rope strand, so is also known as a ‘rope conductor’. It is a conductor used for mobile
wiring, & wire & cable that require flexibility & bend resistance. Like wire rope there are many types
depending on use & bend resistance.
Tin over coated tinned
annealed stranded copper
TASC Wire The flexibility of this standed conductor does not have many failings ; it has also improved on the
bendability of the solid conductor. The tinned annealed copper has 7 identical strands (right Z) -
bundled together with a thin (3-5 μm) tin coating. It was originally developed for wrapping connector
use, but over recent years it has become difficult to open the conductor strand when inserting it into
the PCB. It has the added advantage of having solderability, & it is used as the conductor for hook up
wire, & extruded flat ribbon wire on directly soldered PCBs. There is also excellent bend resistance in
the stainless steel center wire conductor (SUS). 



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