What is the typical insulation temperature rating for SE cable?

The typical insulation temperature rating for SE cable, which stands for Service Entrance cable, is indeed 90 degrees Celsius. This rating allows the wire to safely operate at higher temperatures, which is important for ensuring that the cable can handle the electrical loads typically associated with service entrance applications without degrading the insulation materials.

SE cable is designed for outdoor use and is often subjected to varying environmental conditions, which may cause it to heat up. A rating of 90 degrees Celsius provides a sufficient safety margin to ensure reliable performance and longevity of the cable. Insulation materials and their respective temperature ratings are critical for maintaining safety and functionality in electrical installations. In contrast, ratings such as 60 degrees Celsius or 75 degrees Celsius do not accurately represent the standards for SE cable insulation, as they apply to other types of non-service entrance cables.