Soil Thermal Resistivity is a critical design parameter for buried electrical cables, power transmission lines, substations, and renewable energy infrastructure. It measures how effectively heat generated by buried cables dissipates through the surrounding soil. Getting this value right prevents cable overheating, premature insulation failure, and costly derating of electrical systems. Western Geotechnical Laboratory Services (WGLS) provides accredited Soil Thermal Resistivity testing to ASTM D5334 and IEEE Std 442, available in both 1-point and 4-point configurations to suit project specification requirements. Testing is carried out on compacted soil specimens at specified moisture and density conditions, providing electrical engineers, civil designers, and project specifiers with the accurate thermal data needed for cable burial design across Western Australia’s growing energy and infrastructure sector.
