NEC Commercial Electrical Practice Test

What is the minimum clearance required for individual open conductors and cables above grade level?

1. 5 feet

2. 8 feet

3. 10 feet

4. 12 feet

The correct answer is: 10 feet

The minimum clearance required for individual open conductors and cables above grade level is 10 feet. This requirement is established to ensure safe operational standards and to protect both the electrical infrastructure and individuals in the vicinity from accidental contact. Maintaining a minimum height helps reduce the risk of electrical hazards, particularly in locations where vehicles and pedestrians are present. The 10-foot clearance requirement also accommodates the needs of maintenance vehicles and ensures that the conductors are elevated enough to minimize the chance of contact with larger objects or person. Overall, adhering to this clearance standard is crucial for promoting safety and compliance with the National Electrical Code (NEC) regulations.