What is a common use for Class 3 circuits in low voltage systems?

Class 3 circuits are specifically designed for low voltage applications, typically operating at 60 volts or less, which makes them well-suited for various low voltage communication systems. A prominent use for Class 3 circuits is in data communication. This includes applications such as control signaling, communication networks, and certain types of audiovisual systems.

The primary advantage of Class 3 circuits is their ability to carry a modest amount of power while ensuring safety and compliance with electrical codes. Since these circuits are limited to lower voltage levels, they reduce the risk of electrical shock and other hazards, which is particularly important in environments where safety is a priority.

In contrast, other options like power transmission, high-intensity lighting, and motor control typically require higher voltage and power levels that exceed the capabilities and safety provisions of Class 3 circuits. Therefore, the correct identification of data communication as a common use of Class 3 circuits reflects their intended application within low voltage systems.