What does the term “hotline” refer to?

The term "hotline" specifically refers to a live electrical line that is carrying current. In the context of electrical work, understanding the status of the lines is crucial for safety and operational purposes. A hotline is energized and poses electrical hazards, necessitating safety protocols when working near or with these lines. Proper training and awareness are essential for linemen to navigate the risks associated with working around live equipment.

While the other options describe various states of electrical lines or communication, they do not accurately capture the specific meaning of "hotline," which is solely focused on live electrical lines. This distinction is important for ensuring safety and effective communication among linemen performing their duties.