Neutral wires must always be what color?

The color white is designated as the standard color for neutral wires in electrical wiring as per the National Electrical Code (NEC) in the United States. This color coding helps in maintaining consistency and safety in electrical installations. By using white to represent neutral wires, electricians can easily identify their purpose within a wiring system.

Neutral wires play a critical role in the electrical circuit by providing a return path for current, balancing the load on the circuit. The standardization of wire colors, including the use of white for neutral wires, ensures that individuals working on or inspecting electrical systems can quickly recognize the wiring arrangement, reducing the likelihood of mistakes that could result in electrical hazards or equipment damage.

This conventional color-coding is essential for maintaining safe practices in residential, commercial, and industrial environments, thereby supporting the overall safety standards in electrical installations.