The white conductor within a cable may be permanently reidentified to indicate its use as an ungrounded conductor at each visible location. This statement is:

• A. True
• B. False
• C. Only If GFCI Protected
• D. Only In Industrial Installations

Answer: (A)

Reidentification of a white (or gray) conductor as an ungrounded (hot) conductor is allowed by the NEC when that conductor is used as a live conductor. The important part is that the reidentification must be permanent and visible at every location where the conductor is exposed, so the conductor cannot be mistaken for a neutral anywhere along its run. You would mark it with a color other than white or gray (commonly red, black, etc.) using tape, paint, or other approved methods, ensuring the marking appears at each visible location, including terminations.

This isn’t limited to certain systems or to GFCI-protected circuits, nor is it restricted to industrial installations. The key idea is that, with proper, permanent identification at all visible points, a white conductor can serve as an ungrounded conductor.