Having a single solid core, this wire will retain a formed shape.
Also ideal for use in conjunction with breadboards for prototyping.
Overall diameter is 1.2mm (16AWG), rated at 1.8A, 1kV.
Tech Tin Files: Wires, Finishing, jacketing, and insulating
Electrical wires are usually covered with insulating materials, such as plastic, rubber-like
polymers, or varnish. Insulating and jacketing of wires and cables is nowadays done by
passing them through an extruder. Formerly, materials used for insulation included
treated cloth or paper and various oil-based products. Since
the mid-1960s, plastic and polymers exhibiting properties similar to rubber have predominated.
Two or more wires may be wrapped concentrically, separated by insulation, to form coaxial
cable. The wire or cable may be further protected with substances like paraffin, some
kind of preservative compound, bitumen, lead, aluminum sheathing, or steel taping.
Stranding or covering machines wind material onto wire which passes through quickly.
Some of the smallest machines for cotton covering have a large drum, which grips the
wire and moves it through toothed gears; the wire passes through the centre of disks
mounted above a long bed, and the disks carry each a number of bobbins varying from
six to twelve or more in different machines. A supply of covering material is wound
on each bobbin, and the end is led on to the wire, which occupies a central position
relatively to the bobbins; the latter being revolved at a suitable speed bodily with
their disks, the cotton is consequently served on to the wire, winding in spiral fashion
so as to overlap. If a large number of strands are required the disks are duplicated,
so that as many as sixty spools may be carried, the second set of strands being laid
over the first.
Coaxial cable, one example of a jacketed and insulated wire.
For heavier cables that are used for electric light and power as well as submarine
cables, the machines are somewhat different in construction. The wire is still carried
through a hollow shaft, but the bobbins or spools of covering material are set with their
spindles at right angles to the axis of the wire, and they lie in a circular cage which
rotates on rollers below. The various strands coming from the spools at various parts of
the circumference of the cage all lead to a disk at the end of the hollow shaft. This
disk has perforations through which each of the strands pass, thence being immediately
wrapped on the cable, which slides through a bearing at this point. Toothed gears
having certain definite ratios are used to cause the winding drum for the cable
and the cage for the spools to rotate at suitable relative speeds which do not vary.
The cages are multiplied for stranding with a large number of tapes or strands,
so that a machine may have six bobbins on one cage and twelve on the other.