How should an insulated grounded conductor of #6 AWG or smaller be identified?

An insulated grounded conductor of #6 AWG or smaller should be identified by a continuous white or gray finish. This identification is crucial because it aligns with the National Electrical Code (NEC) requirements for color coding conductors. The color white or gray distinctly indicates that the conductor is meant to serve as a grounded conductor, which carries neutral current in an electrical system. This clear identification helps prevent confusion during installation and maintenance, ensuring that electricians and others working with the electrical system can easily recognize the function of that conductor.

Choosing other colors would not provide the necessary clarity required for a grounded conductor. For instance, a red outer finish typically designates a hot conductor, while black insulation is often used for phase conductors. Striped green insulation is primarily reserved for grounding conductors, not for grounded or neutral conductors. Thus, adopting the correct identification method by using continuous white or gray for insulated grounded conductors enhances safety and compliance within electrical installations.