Grounded conductors of 6 AWG or smaller shall be identified by what marking method?

• A. A Continuous White Or Gray Outer Finish
• B. Red Dots At Terminations
• C. Blue Stripes On Insulation
• D. Green Insulation Only

Answer: (A)

The concept being tested is how grounded conductors (neutrals) are identified. For neutrals, the NEC requires a distinguishing color so they’re not confused with ungrounded or grounding conductors. When the conductor is 6 AWG or smaller, identification is achieved by a continuous white or gray outer finish. This provides a clear, uniform signal that the conductor is the grounded (neutral) path, regardless of the specific insulation color beneath the jacket.

Green insulation is reserved for equipment grounding conductors, so that option would not identify a grounded conductor. Red dots, blue stripes, or other colored markings do not match the standard method for neutrals and could imply different circuit functions.