A significant deal of evolution has occurred in the way the world communicates today. The days of telegram and radio waves have given way to copper wires being used extensively with the optic fibres. The bare copper wires are configured and constructed to work with modern day gadgets and data encryptions. For more accuracy and safety, the bare copper wires used today come with insulations and alloyed metal sheaths. The degree of safety achieved depends on the number of layers of insulation and the kind of material used with bare copper wires. The impurities can challenge the accuracy levels and cause disruption of signals.