In three-phase wiring, which color is not typically used for phase identification?

In three-phase wiring, the typical color coding for phase identification includes black, red, and blue. These colors are commonly used in electrical systems to distinguish the three different phases. The use of black typically represents one phase, red represents another, and blue represents a third phase.

Orange is not a standard color used for phase identification in three-phase systems. Instead, it is often used for specific applications or signaling purposes, allowing for differentiation from the primary phase colors. The National Electrical Code (NEC) often specifies these particular colors to ensure consistency and safety in electrical installations, making it easier for electricians to identify and work with the wiring systems. Therefore, in the context of phase identification, orange stands out as not being traditionally utilized for this specific purpose.