Electrician's Licensing Practice Exam

Where should grounded conductors be placed in an electrical installation?

1. Green screws

2. Yellow reciprocal screws

3. Red screws

4. Black screws

The correct answer is: Green screws

Grounded conductors should be connected to green screws in an electrical installation. Green screws are specifically designated for ground connections, which serve as a clear indicator to electricians and inspectors that these particular screws are meant for grounding purposes. This standardization enhances safety and ensures that the grounded conductors are properly identified, which is crucial for preventing electrical shock hazards and maintaining system integrity. The other options do not typically signify grounding. For example, red screws are often associated with switch legs or circuits that may carry power, while black screws are usually linked to line conductors. Yellow screws, similarly, could have various functions that do not pertain to grounding. Therefore, using green screws for grounded conductors aligns with established electrical codes and best practices, facilitating compliance and safety in electrical installations.