Editing Braid (section)

===Ropes and cables===
[[File:Braid StepBystep.jpg|left|thumb|A step by step creation of a basic braid using three strings]]
Braiding creates a composite rope that is thicker than the non-interlaced strands of [[yarn|yarns]].  Braided ropes are preferred by [[arborist]]s, [[rock climbing|rock climbers]], and in [[sport sailing]] because they do not twist under load, as does an ordinary twisted-strand rope. These ropes consist of one or more concentric tubular braided jackets surrounding either several small twisted fibre cords, or a single untwisted yarn of straight fibres, and are known as [[Kernmantle rope]]s.

In electrical and electronic cables, ''braid'' is a tubular sheath made of braided strands of metal placed around a central cable for shielding against [[electromagnetic interference]]. The braid is grounded while the central conductor(s) carries the signal. The braid may be used in addition to a foil jacket to increase shielding and durability. [[Litz wire]] uses braids of thin insulated wires to carry high frequency signals with much lower losses from [[skin effect]] or to minimise [[proximity effect (electromagnetism)|proximity effect]] in transformers. Flat braids made of many copper wires can also be used for flexible electrical connections between large components. The numerous smaller wires comprising the braid are much more resistant to breaking under repeated motion and vibration than is a cable of larger wires.

Similar braiding is used on pressurized [[Hose (tubing)|hoses]], such as in plumbing and [[hydraulic brake]] systems in automobiles. Braiding is also used for fibres for composite reinforcements.

A property of the basic braid is that removing one strand unlinks the other two, as they are not twisted around each other.  Mathematically, a braid with that property is called a [[Brunnian braid]].