CURRENT RATINGS PVC CABLE

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CURRENT RATING (PVC)

The current ratings in table 1 & 2 based on the normal conditions of installation as described below :

  • Maximum condr. temperature 70°C
  • Ambient air temperature 40°C
  • Ground temperature 30°C
  • Depth of laying 75 cm (for cable laid directly in ground (1.1. KV)
  • Thermal resistivity of soil 150°C cm/watt
  • Thermal resistivity of cable 650°C cm/watt
  • Max. short-circuit conductor temperature 160°C
  • Max. Ambient Air Temperature 55°C

Installation method and rating factors are given in tables 1 to 6

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