Networks
Electrical Cables - Coaxial cables


Coaxial cables have a copper wire running through the middle encased in plastic insulation.
The plastic insulation is itself encased in a metal braid which is covered by an outer layer of plastic insulator.
The electrical signals run through the central wire and the metal braid acts as both an earth and as a shield against electromagnetic interference.


A BNC connector on a network card

Coaxial cables are connected to devices by means of a special plug with a bayonet connection. This is called a BNC plug.