Which color wire typically represents a hot wire?

• A. Green
• B. White
• C. Gray
• D. Black

Answer: (D)

The color black is universally recognized in residential electrical wiring as the standard for hot wires. Hot wires carry electrical current from the power source to various fixtures, outlets, and appliances. Understanding this color coding is crucial for safety during installations and inspections, as it allows electricians and inspectors to quickly identify which wires are energized and pose a potential shock hazard.

Green, on the other hand, is designated for grounding wires, which are intended to protect against electrical faults by providing a safe path for stray current. White wires are typically used as neutral conductors, returning current back to the power source and completing the circuit. Gray wires may also serve as neutral or grounded conductors depending on the system. Therefore, recognizing black as the color representing hot wires is essential for maintaining safety and efficiency in electrical work.