Solution and Answer Guide Illustrated Guide to the National Electrical Code 9th Edition by Charles R. Miller | new update 2026 A+

Solution and Answer Guide Illustrated Guide to the
National Electrical Code 9th Edition by Charles R.
Miller

ILLUSTRATED GUIDE TO THE NATIONAL ELECTRICAL CODE, 9TH
ED. (CHARLES R. MILLER)


Chapter 1 — General
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Q1. The NEC is primarily intended to:
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 A. Ensure efficiency of electrical systems
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 B. Provide safety from electrical hazards
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 C. Establish pricing for equipment
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 D. Define design details for engineers
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Answer: B u




Rationale:NEC’s scopeis safety—minimizing risks of fire and shock. It does
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not address cost or design specifics.
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Q2. Which authority enforces the NEC locally?
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 A. NFPA Board
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 B. Authority Having Jurisdiction (AHJ)
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 C. Utility company
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 D. OSHA exclusively
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Answer: B u




Rationale:The AHJ interprets and enforces the NEC, often local inspectors.
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Q3. Which of the following is not covered by the NEC?
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, A. Marine installations regulated by other codes
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 B. Dwelling units
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,  C. Commercial occupancies
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 D. Industrial occupancies
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Answer: A u




Rationale:NEC excludes ships, railways, and some communications
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facilities under other regulations.
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Q4. The NEC defines a “qualified person” as:
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 A. Anyone with electrical knowledge
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 B. An individual with skills and safety training to perform electrical tasks
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 C. A licensed engineer only
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 D. A certified inspector only
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Answer: B u




Rationale:A qualified personhas demonstrated knowledge and training in
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equipment and safety practices.
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Q5. Which term means “an electric circuit including conductors between final
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overcurrent device and outlet(s)”?
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 A. Feeder u




 B. Branch circuit
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 C. Service conductors
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 D. Equipment grounding conductor
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Answer: B u




Rationale:Branch circuit runs from OCPD to outlets. Feeder runs between
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OCPD and other OCPD.
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, Q6. Which color identifies an equipment grounding conductor?
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 A. White
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 B. Green or bare
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