Which color is NOT allowed for an ungrounded conductor?

In electrical wiring, certain colors are designated for specific purposes to ensure safety and consistency. An ungrounded conductor, often referred to as a "hot" wire, is responsible for carrying current to a load. The colors commonly accepted for ungrounded conductors include black, red, and blue.

Green with a yellow stripe, however, is specifically designated for grounded conductors, which are intended to be connected to the earth for safety. This designation helps prevent confusion in wiring systems, allowing electricians to easily identify which conductors are safe for carrying load and which are for grounding purposes. As a result, using green with a yellow stripe for an ungrounded conductor would violate electrical codes and safety standards.

This standardized color-coding scheme is crucial for ensuring both installation safety and the proper functioning of electrical systems.