How Does Soil Thermal Resistivity Affect Underground Power Cable Ampacity?
Parameter Low Thermal Resistivity High Thermal Resistivity Soil thermal resistivity Better heat transfer Poorer heat transfer Heat dissipation Efficient Restricted Conductor temperature Generally lower Generally higher Cable ampacity Generally higher Generally lower Typical soil condition Moist, compact soil Dry, loose or sandy soil Thermal performance More favorable Less favorable The table shows qualitative relationships, not […]