about grounding

Replies

• 

  Syncopator

  Unfortunately the words "ground" and "grounding" are widely misused and frequently misunderstood.
  
  What grounding should mean is connecting something, through a low impedance path, to the Earth. Its purpose is to avoid electrical shock in the case of a fault.
  
  It might help you to read these two pages:
  
  Earth
  
  Leakage
• 

  aj_onduty

  If you think that grounding means connecting to a metal, first look what are you connecting to the metal. The wires are also made of metal. So, what you heard is just half of the conversation. The metal, which the source says, must be the earthing point. Please view in detail Various methods of earthing (pipe earthing, plate earthing etc.). The real motive behind earthing is to provide a path of very low resistance for any unwanted current (current leaked into the body of an electric iron, for example), which potentially harmful for the user. For earthing, we follow the various methods (as I said above). A conductor (pipe or plate(usually galvanized iron)) is used for better conduction. This must be the metal they must be talking about.
  Hope you got it clear NM.
  Sorry for the late reply.
• 

  narayana murthy

  Thanks friends now i understood what it means
  @aj
  no problem
• 

  IES

  if a cheap metal is used for grounding then due to its impedance low currents will not flow through the cheaper metal, hence we alwz go for solidly grounding using good metals so that the conductor allows even a small current to flow & get into the ground...............