The primary use of a phase rotation indicator is to:

A phase rotation indicator is a specialized tool used primarily to determine the sequence of phases in a three-phase electrical system. This is crucial in various applications, especially when setting up three-phase motors and systems where the correct phase sequence is vital for proper operation. If the phases are connected incorrectly, motors can run in reverse, which can lead to equipment damage or failure.

While measuring voltage levels, analyzing load distribution, and assessing energy consumption are important aspects of managing electrical systems, they are not the primary function of a phase rotation indicator. The tool's design focuses specifically on identifying the order of the three phase wires, ensuring that electrical systems are wired correctly to function as intended.