What does the term "neutrals" refer to in electrical practices?

The term "neutrals" in electrical practices refers to the grounded conductor, which is typically a conductor that carries current under normal operating conditions. This conductor plays a crucial role in completing the electrical circuit by returning the current back to the power source. In a properly balanced electrical system, the neutral carries the imbalance of current between the phases. It is connected to the ground at the service panel, providing a reference point for voltage levels and ensuring safety by preventing electrical shock hazards.

Understanding this definition is important as it highlights the function of the neutral in both normal operations and fault conditions, making it essential for safe and effective electrical system design and implementation. The other options do not accurately capture the role of the neutral conductor. For example, a conductor that does not carry current is not a neutral; it would be non-functional in the context of electrical circuits. Similarly, a conductor responsible for carrying high voltage or a protective conductor for grounding pertain to different aspects of electrical systems that do not align with the definition of neutrals.