Method for Construction of Earthing Pit (Indian Electricity Board):

  • Excavation on earth for a normal earth Pit size is 1.5M X 1.5M X 3.0 M.
  • Use 500 mm X 500 mm X 10 mm GI Plate or Bigger Size for more Contact of Earth and reduce Earth Resistance.
  •  Make a mixture of Wood Coal Powder Salt & Sand all in equal part
  •  Wood Coal Powder use as good conductor of electricity, anti corrosive, rust proves for GI Plate for long life.
  • The purpose of coal and salt is to keep wet the soil permanently.
  • The salt percolates and coal absorbs water keeping the soil wet.
  • Care should always be taken by watering the earth pits in summer so that the pit soil will be wet.
  • Coal is made of carbon which is good conductor minimizing the earth resistant.
  • Salt use as electrolyte to form conductivity between GI Plate Coal and Earth with humidity.
  • Sand has used to form porosity to cycle water & humidity around the mixture.
  • Put GI Plate (EARTH PLATE) of size 500 mm X 500 mm X 10 mm in the mid of mixture.
  • Use Double GI Strip size 30 mm X 10 mm to connect GI Plate to System Earthling.
  •  It will be better to use GI Pipe of size 2.5? diameter with a Flange on the top of GI Pipe to cover GI Strip from EARTH PLATE to Top Flange.
  • Cover Top of GI pipe with a T joint to avoid jamming of pipe with dust & mud and also use water time to time through this pipe to bottom of earth plate.
  • Maintain less than one Ohm Resistance from EARTH PIT conductor to a distance of 15 Meters around the EARTH PIT with another conductor dip on the Earth at least 500 mm deep.
  • Check Voltage between Earth Pit conductors to Neutral of Mains Supply 220V AC 50 Hz it should be less than 2.0 Volts.

For More You Can Check : Brand Communication Video

%d bloggers like this: