What color identification is used for insulated grounded conductors?

Insulated grounded conductors are identified by specific colors according to electrical codes and standards, including the National Electrical Code (NEC) in the United States. The use of white or gray as identification for grounded conductors is standardized to ensure consistency, safety, and clarity in wiring installations. This color coding helps electricians and inspectors quickly identify the function of conductors in a system, which is crucial for proper installation and troubleshooting.

White or gray is designated specifically for the grounded (neutral) conductor, making it clear during inspections or maintenance that these conductors are not intended to carry current under normal operating conditions. In contrast, other color codes are reserved for different types of conductors, such as grounding conductors (which are typically green or bare) or ungrounded conductors (which can be any color except white, gray, or green). This differentiation is important in minimizing the risk of errors during electrical work, ultimately promoting safety in electrical systems.