Services & DistributionQuestion 46 of 110
What is the minimum vertical clearance of an overhead service drop (not over 300 V) above a residential driveway or sidewalk area limited to pedestrians?
a.10 ft
b.12 ft
c.15 ft
d.18 ft
Explanation
Service-drop conductors up to 300 V to ground require 12 ft of clearance over residential property and driveways not subject to truck traffic.
Law Reference: 2023 NEC 230.24(B)Practice all 110 questions free — no signup required.
Related questions on this topic
- What is the smallest conductor size generally permitted to be installed in parallel?
- Two paralleled sets of 500-kcmil Cu (75 C, 380 A each) supply one feeder. What is the combined ampacity before adjustment?
- What is the minimum service disconnecting-means rating for a one-family dwelling?
- At a separately derived system such as a transformer, what conductor connects the grounded conductor to the system grounding electrode?
- An emergency system must be capable of supplying power to its loads within what maximum time after normal supply is lost?
- A legally required standby system must supply its loads within what maximum time after loss of normal power?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against Master Electrician Licensing Exam (NEC-based) · How we review