What is the maximum operating temperature of type letter UF with moisture-resistant insulation?

The maximum operating temperature for type UF (Underground Feeder) cable with moisture-resistant insulation is indeed 75°C. This standard allows the cable to perform effectively in environments where exposure to moisture can occur, making it suitable for outdoor or underground installations.

The 75°C rating is established to ensure that the insulation can withstand the heat generated during operation without degrading, which is critical for maintaining the integrity and safety of the electrical system. This temperature rating is specifically outlined in industry standards, ensuring that the cables can function under specified conditions and reducing the risk of failure or electrical hazards.

Understanding the specifications of types of insulation, like UF cable, is essential for professionals to ensure they select the appropriate materials for their specific applications, especially where moisture might be a concern.