Electrician's Licensing Practice Exam

Which article addresses the requirements for equipment grounding conductors?

1. Article 310

2. Article 250

3. Article 392

4. Article 230

The correct answer is: Article 250

The requirements for equipment grounding conductors are covered in Article 250 of the National Electrical Code (NEC). This article specifically focuses on grounding and bonding, detailing the necessary practices and materials used to ensure safe electrical installations. Grounding conductors are essential for protecting individuals from electrical shock and minimizing the risk of fire by providing a path for fault currents. Therefore, the provisions outlined in Article 250 address the sizing, installation, and types of equipment grounding conductors that must be utilized to comply with safety standards. Other articles mentioned, such as Article 310, primarily address conductors for general wiring installations, Article 392 pertains to the requirements for cable trays, and Article 230 focuses on services, including service conductors and service-entrance equipment. While all of these articles play critical roles in electrical installations, they do not specifically pertain to the grounding requirements, which is the focus of Article 250.