What does the second number in wire coding designate?

The second number in wire coding typically designates the circuit number. In wire identification systems, each number in the code serves a specific purpose, and the second number is often used to indicate which specific circuit the wire is associated with. This is particularly important in electrical systems for ensuring correct connections and tracing wire paths. It helps in simplifying maintenance and troubleshooting by allowing technicians and engineers to quickly identify the function and destination of the wiring based on its coding.

Understanding the significance of the circuit number aids in organizing an electrical system's components effectively, ensuring efficiency and safety in electrical installations. Therefore, recognizing that the second number relates to the circuit number is crucial for anyone working in electrical power production and maintenance.