Which of the following statements about the potential of the running rails is accurate?

The statement indicating that the running rails have a potential ranging from 0 to 12000V is accurate because it reflects the variability in voltage that can occur along the rail system depending on various conditions, such as the type of electrical system in operation and the presence of nearby electrical sources. Rail systems can operate at different voltages, and in certain scenarios, particularly in electrified rail systems, voltages can indeed reach as high as 12000 volts.

This wide range in potential is crucial for operators and maintenance personnel to understand, as it highlights the importance of safety protocols when working around or with the rails to avoid electrical hazards. Exploring the maximum feasible potential helps in establishing best practices for rail maintenance and ensuring that everyone involved is aware of the risks associated with electrical potentials in railway systems.