What is the correct identification for a 3-phase isolated power circuit in a health care facility?

In a healthcare facility, the identification of a 3-phase isolated power circuit follows specific color coding standards that ensure safety and reduce the risk of confusion when working with electrical systems. The correct identification for a 3-phase isolated power circuit is orange, brown, and yellow.

This color coding is aligned with the National Electrical Code (NEC) and guidelines outlined by various health and safety organizations, which help to denote the specific purpose of these circuits. In this context, the orange, brown, and yellow colors indicate the phases of the isolated power systems, which are critical in maintaining safe operations in medical settings where patients are often dependent on reliable electrical power for life-supporting equipment.

Using distinct, standardized colors provides a clear differentiation that is essential in maintaining safety protocols, minimizing electrical hazards, and ensuring that healthcare personnel can quickly identify and respond to issues in the electrical systems. Thus, option B is the correct identification for a 3-phase isolated power circuit in a healthcare facility.