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Bend radius, which is measured to the inside curvature, is the minimum radius one can bend a pipe, tube, sheet, cable or hose without kinking it, damaging it, or shortening its life. The smaller the bend radius, the greater the material flexibility (as the radius of curvature decreases , the curvature increases ).
Comparison of SWG (red), AWG (blue) and IEC 60228 (black) wire gauge sizes from 0.03 to 200 mm² to scale on a 1 mm grid – in the SVG file, hover over a size to highlight it. In engineering applications, it is often most convenient to describe a wire in terms of its cross-section area, rather than its diameter, because the cross section is directly proportional to its strength and weight ...
Some cable protection systems include a polymer based vertebrae system which restricts the bend radius to a maximum of a few degrees per segment. These systems are lighter (in water) than their metal equivalents and often more expensive to produce but must be carefully assessed for longevity in the proposed application.
Category 6 and 6A cable must be properly installed and terminated to meet specifications. The cable must not be kinked or bent too tightly; the bend radius should be larger than four times the outer diameter of the cable. [16] The wire pairs must not be untwisted and the outer jacket must not be stripped back more than 13 mm (0.51 in).
If the MI cable jacket has been damaged, the magnesium oxide will wick moisture into the cable, and it will lose its insulating properties, causing shorts to the copper cladding and thence to earth. It is often necessary to remove 0.5 to 2 metres (1.6 to 6.6 ft) of the MI cable and splice in a new section to accomplish the repair.
Special tube bending equipment is used to bend the conduit without kinking or denting it. The cost of conduit installation is higher than other wiring methods due to the cost of materials and labor. In applications such as residential construction, the high degree of physical damage protection may not be required, so the expense of conduit is ...
The unique cable construction technique of braiding conductors around a tension-proof centre instead of layering them is the second type of construction. Eliminating multi-layers guarantees a uniform bend radius across each conductor. At any point where the cable flexes, the path of any core moves quickly from the inside to the outside of the ...
Litz wire has a higher impedance per unit cross-sectional area but litz wires can be used at thicker cable sizes, hence reducing or maintaining cable impedance at higher frequencies. [ 9 ] [ better source needed ] Construction of litz wires usually involves extremely fine wires often available with a silver plate or solid silver.