The wire stranding and insulation type and stranding can vary widely a lot within one wire size. Wire strands can be made of copper, can be tinned, over coated, or top coated. Wire insulation materials, thickness, materials and durometers vary from application to applicationdiameters are different for different applications. <ref name = "digikey">https://media.digikey.com/pdf/Data%20Sheets/Molex%20PDFs/Quality%20Crimp%20Handbook.pdf</ref>

'''AWG''' - American Wire Gauge is a standardized wire gauge system used since 1857 predominantly in North America for the diameters of round, solid, nonferrous, electrically conducting wire. <ref>https://en.wikipedia.org/wiki/American_wire_gauge</ref>

Wires are of two types:<ref>http://www.awcwire.com/conductor-stranding</ref>* '''Solid:''' Solid conductors consist of just one a single strand of metal. They are easier It is easy to terminate these than stranded conductors. They These wires are also mechanically tough and . They are inexpensive. The However, they have a major disadvantage of solid conductors is their lack : Lack of flexibility.*'''Stranded:''' Stranded conductors are composed consist of multiple metal strands bunched together in any number of configurations. They overcome the drawback of solid conductors because they are much more flexible than solid conductors, and the . The higher the strand count, the more flexible they areis the flexibility of the wire. While this can add some increase the cost, it is essential quite necessary for any wire or cable that will need to withstand any kind of flexing, or any other movement or flexing. <br \>A finely stranded wire improves crimped joint performance. A wire composed made up of a few larger sized strands of larger size will tend to act as a solid wire in the crimp. Some There are some stranded wire crimp configurations which are not satisfactory unsatisfactory for solid wire. More deformation must are essential to be imposed in order to form wire and barrel into a solid mass. On Finer strands, on the other hand, finer strands will more readily fill the inside corners of the crimp shape and more evenly distribute the forces of the crimp. <ref name = "digikey"/>

[[File:SolidSolid2.pngjpg|frame|left|SolidElectric cable with solid copper wires. Image reproduced from [https://en.wikipedia.org/wiki/Electrical_cable here]]][[File:StrandedStranded2.pngjpg|frame|center|StrandedWire. Image reproduced from [https://commons.wikimedia.org/wiki/File:Stranded_lamp_wire.jpg here]]]