What is the Voltage on the Auxiliary Wire?

The correct voltage on the auxiliary wire is indeed 12,000 volts. In the context of railway systems, auxiliary wires are typically used for supplying power to necessary equipment that supports the operation of trains and railway infrastructure, such as lighting, heating, and signaling systems.

The high voltage of 12,000V is standard in many railway systems, especially for overhead lines and auxiliary supply, because it allows for efficient transmission of power over long distances with minimal losses. This higher voltage is essential to ensure that the power requirements of various onboard systems and equipment are met without significant drops in performance or efficiency.

Understanding the typical uses and requirements of auxiliary wiring systems in rail operations helps to reinforce why 12,000 volts is a calculated and appropriate figure for this context.