Which statement best describes orange or yellow wires?

• A. They are used for grounding.
• B. They carry DC power only.
• C. They carry AC power only.
• D. They remain energized after disconnection from power (externally powered)

Answer: (D)

Orange or yellow conductors are often used to mark circuits that may still be energized from an external source. Because of that, even if you disconnect the main power, these wires can remain live if another power source or external input remains connected. The color itself doesn’t tell you whether the current is DC or AC, so those options aren’t determined by color alone. Grounding is typically green or bare, not orange or yellow, so that part doesn’t apply. Treat orange or yellow wires as potentially energized because of external power, which is why they best fit the statement that they remain energized after disconnection.