NEC Commercial Electrical Practice Test

What color should the terminal be for attaching the grounded conductor on electrical devices?

1. Black

2. Red

3. White

4. Green

The correct answer is: White

The terminal for attaching the grounded conductor is typically colored white. This convention is established to provide clear identification and to enhance safety during installations and maintenance. In electrical systems, the grounded conductor, commonly referred to as the neutral wire, is usually designated by a white or gray insulation color. This standardized color code helps electricians quickly identify wires and ensures that the grounded conductor is consistently recognized across different devices and applications. Using white for the grounded conductor aligns with the National Electrical Code (NEC) standards, which aim to minimize confusion and potential wiring errors that could lead to short circuits or improper connections. By adhering to this color coding, electricians can more easily ensure correct installations and operations of electrical devices, ultimately enhancing the safety and reliability of the electrical system.