Grounding is one of the most important safety considerations in the electrical field. It provides a low resistance path to ground to prevent conductive objects from existing at a high potential.
Ground is a conducting connection, whether intentional or accidental, between an electrical circuit or equipment and the earth or to some conducting body that serves in place of the earth.
Grounding Electrode is a device that establishes an electrical connection to the earth.
Grounding Electrode System and Grounding Electrode Conductor: All following grounding electrodes present at each building or structure served shall be bonded together to form the grounding electrode system.
Metal Underground Water Pipe
Metal Frame of the Building or Structure
Rod and Pipe Electrodes
Other Local Metal Underground Systems or Structures