Short for British Naval Connector or Bayonet Nut Connector or Bayonet Neill Concelman, a type of connector used with coaxial cables such as the RG-58 A/U cable used with the 10BASE2 Ethernet system. The basic BNC connector is a male type mounted at each end of a cable. This connector has a center pin connected to the center cable conductor and a metal tube connected to the outer cable shield. A rotating ring outside the tube locks the cable to any female connector.

Any material with a low resistance to electrical current. Any material capable of carrying an electrical current.

This means that a conductor or terminal is so marked that it is recognized as being grounded. The neutral is referred to as the identified conductor.

This means that a conductor or terminal is so marked that it is recognized as being grounded. The neutral is referred to as the identified conductor .

A system or circuit conductor which is intentionally grounded.

It is the conductor used to connect  noncurrent- carrying  metal parts of equipment, raceways and others enclosures to the system grounding conductor at the service and / or the grounding electrode conductor.