What color must the indicated conductor or busbar be marked in if it has a higher phase voltage-to-ground?

The requirement for marking the indicated conductor or busbar relates to the color coding standards specified in the National Electrical Code (NEC) for the identification of conductors. If a conductor or busbar has a higher phase voltage-to-ground, it should be marked with a color that allows easy recognition and prevents potential confusion during installation and maintenance.

The color orange is designated for conductors that have a higher phase voltage-to-ground as part of the NEC color coding. This ensures that anyone working with or near the electrical system can quickly identify the potential hazards associated with those conductors. Orange marking clearly communicates the elevated voltage levels, promoting safety and reducing the risk of accidental contact.

This systematic approach to color coding aids electricians, engineers, and maintenance personnel in making informed decisions and identifying appropriate safety measures when dealing with electrical circuits. The adoption of such standardized colors is crucial for maintaining safety protocols and ensuring clear communication in electrical installations.