| 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 |