The measurement of soil thermal stability, thermal resistivity, and underground cable ampacity

@article{Malmedal2014TheMO,
  title={The measurement of soil thermal stability, thermal resistivity, and underground cable ampacity},
  author={Keith Malmedal and Carson Bates and David Cain},
  journal={2014 IEEE Rural Electric Power Conference (REPC)},
  year={2014},
  pages={C5-1-C5-12}
}
One of the most important factors affecting underground cable ampacity is the thermal resistivity of the soil. It is well known that thermal resistivity of the soil will vary with moisture content. It is also well known that the heat generated by cables can cause soil drying thus affecting the soil thermal resistivity. The ability of the soil to maintain its thermal resistivity in the presence of a heat source is known as thermal stability. Soil will increase in resistivity due to drying caused… CONTINUE READING

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