Symbols - Materials

 k  factor used in the adiabatic equation and dependant on cable type
 Qc  volumetric heat capacity of conductor at 20°C, J.K-1.mm-3
 α20  temperature coefficient of resistance of material at 20 °C
ß reciprocal of temperature coefficient of resistivity at 0 °C 
ρ20
  electrical resistivity of conductor material at 20 °C, Ω.m
ϴi  initial temperature of conductor, °C
ϴf final temperature of conductor, °C 

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