What is the maximum operating temperature of type USE insulation?

The maximum operating temperature of type USE (Underground Service Entrance) insulation is indeed 75 degrees Celsius. This type of insulation is specifically designed for use in direct burial applications and can handle the heat generated by electrical currents up to this temperature.

In addition to its temperature rating, type USE insulation is constructed to provide protection against moisture and environmental conditions that may be present when buried underground. Knowing the maximum operating temperature is crucial for ensuring safe and efficient performance of electrical systems, as exceeding this temperature can lead to insulation failure, increased risks of short circuits, or even fire hazards.