Electrician's Licensing Practice Exam

Which NEC Section discusses clearances from ground?

1. NEC Section 250-2D

2. NEC Section 225.18

3. NEC Section 250-122

4. NEC Section 250-66

The correct answer is: NEC Section 225.18

NEC Section 225.18 specifically addresses the necessary clearances required for conductors and equipment from the ground. This section provides guidance on how cables should be installed, ensuring that there is adequate space above the ground level to prevent physical damage and interference. It also lays out safety considerations for overhead conductors and their proper height, particularly in areas where there may be pedestrian or vehicular traffic. This focus on ground clearances is critical for minimizing the risk of accidental contact with conductive materials, improving safety for both individuals and equipment below. Proper clearances also contribute to the overall preservation of the electrical system, as adhering to these guidelines helps avoid potential hazards associated with electrical exposure or failures.