Services, Grounding & Bonding第 53 / 120 题
What is the minimum clearance above a residential driveway for overhead service conductors limited to 150 volts to ground?
a.18 feet
b.10 feet
c.12 feet
d.15 feet
解析
Residential driveways and commercial areas not subject to truck traffic require 12 feet of clearance. The 10-foot clearance applies only above finished grade, sidewalks and platforms accessible to pedestrians, and 18 feet is required over public streets, alleys and roads.
法律依据: 2023 NEC §230.24(B)免费刷完整 120 道题库 — 无需注册。
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