Final answer:
The minimum clearance of an electric service wire over a walkway is determined by building codes and regulations, with the National Electrical Code (NEC) setting the standard in the United States. The minimum clearance is typically 10 feet for residential areas and 12 feet for commercial areas.
Step-by-step explanation:
The minimum clearance of an electric service wire over a walkway is determined by building codes and regulations. In the United States, the National Electrical Code (NEC) sets the standard for electrical safety, including clearance requirements.
According to NEC, the minimum clearance for electric service wires over a walkway is typically 10 feet for residential areas and 12 feet for commercial areas. These clearances allow for safe passage under the wires and prevent any potential hazards or contact with the power lines. It is important to follow these clearance requirements to ensure the safety of individuals using the walkway.