Most economical as compared to steel conduits
      Highly insulated, non conductor prevents short circuit
          Hazards
      Corrosion proof, free from rust salinity and humidity
      Having mirror like smooth surface finish
      Uniformity of wall thickness
      Light weight - Easy handling
      Provide good mechanical protection for inside cables
      Having longer life as Compared to metal conduit
      Flame resistance, manufactured out of self extinguishing 
          P.V.C. material
      Easy passage of maximum size and number of cables
           permitted