Electrician's Licensing Practice Exam

Which article specifically covers grounding in the NEC?

1. Article 230

2. Article 250

3. Article 300

4. Article 310

The correct answer is: Article 250

The National Electrical Code (NEC) designates Article 250 as the specific section that addresses grounding and bonding practices for electrical installations. This article outlines the requirements for grounding electrode systems, methods for connecting electrical equipment to the grounding system, and the safety measures necessary to ensure proper grounding to minimize electrical shock hazards and equipment failures. It also covers the grounding of various systems and the roles of grounding conductors, grounding electrodes, and bonding jumpers in maintaining safety and function in electrical systems. Understanding Article 250 is crucial for electricians, as it ensures compliance with safety standards and helps prevent electrical incidents. The other articles mentioned do not focus on grounding: Article 230 deals with services; Article 300 provides general requirements for wiring methods; and Article 310 pertains to conductors for general wiring, which does not specifically cover grounding practices.