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NFPA Chapter 6 Residential Electrical Exam (2025/2026) – 50+ Expert-Verified Questions with Answers | Branch Circuits, GFCI, AFCI, NEC Codes, Outlet Spacing

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This updated and expert-reviewed exam guide is based on NFPA Chapter 6 and the 2025/2026 NEC (National Electrical Code) standards. It includes 50+ verified multiple-choice questions with accurate answers and article references, specifically tailored for residential wiring, outlet spacing, circuit protection, and grounding requirements. Aligned with the NEC 2025 updates, it serves as a key study tool for aspiring electricians, code compliance officers, inspectors, and trade school students preparing for licensing exams. Key topics and code articles covered include: Branch circuits: individual and general-purpose definitions, 15/20/30/50-amp capacities (Art. 100, 210.18, T210.21(B)(3)) Outlet spacing requirements: 12 ft. wall spacing, 18" floor outlet limit, 5.5 ft. height exceptions (Art. 210.52) Circuit protection: GFCI and AFCI rules, location-specific requirements (kitchens, bathrooms, closets) (Art. 210.8, 210.12) Receptacles and lighting: installation height, switch control limits, outdoor receptacle placement (Art. 210.70, 210.52(E)) Wiring methods: conductor length at junctions, grounded conductor continuity (Art. 300.13, 300.14) Grounding and bonding: EGC sizing in NM cable, grounding-type receptacle use (T250.122, 406.4) Special circuits: multiwire branch circuits, duplex receptacle configurations, disconnect requirements Luminaire and ceiling fan support rules: weight thresholds and box markings (Art. 314.27) This study set is ideal for: Electrical apprentices and journeyman electrician candidates Residential wiremen and contractors NEC/IBC exam prep students Vocational instructors and code trainers Home inspectors and safety compliance specialists By referencing the specific NEC articles and integrating exam-style questions, this guide ensures clear understanding and readiness for technical exams, permitting inspections, or field-level applications in residential wiring systems. Keywords: NFPA 1006, NEC 2025, branch circuit, GFCI, AFCI, grounded conductor, outlet spacing, receptacle height, switch control, circuit breaker, 15 amp, 20 amp, 30 amp, 50 amp, junction box, multiwire circuit, individual branch circuit, general-purpose circuit, grounding conductor, NM cable, ceiling fan box, luminaire support, residential wiring, NEC article 210, NEC article 300, code compliance

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NFPA Chapter 6 2025/2026 Exam
Questions and Correct Answers | New
Update



A duplex receptacle rated 20 amps can be installed on a ______ branch

circuit. - 🧠ANSWER ✔✔20 amp (A210.23 (B) (3))


The continuity of a grounded conductor shall not be dependent on the

device in _____ - 🧠ANSWER ✔✔Multiwire branch circuits (A300.13 (B))


In dwelling units, receptacle outlets located more than _____ ft. above the

floor are not counted in the required number or receptacles along the wall. -

🧠ANSWER ✔✔5.5 (A210.52)


At least _________________ of free conductor, measured from the point in

the box where it emerges from its raceway or cable sheath, shall be left at

, each outlet, junction, and switch point for splices or the connection of the

luminaires or devices. - 🧠ANSWER ✔✔6 inches (A300.14)


In nonmetallic-sheathed cable, the equipment grounding conductor for 15-,

20-, and 30-ampere branch circuits_____ - 🧠ANSWER ✔✔Must be the

same size as the insulated circuit conductors (T250.122)

a 20-ampere, 125-volt receptacle installed within _________ from the top

inside edge of the bowl of the sink shall have ground-fault circuit-interrupter

protection for personnel - 🧠ANSWER ✔✔6 ft. (A210.8 (A) (8))


What is the minimum number of 120-volt, 15-ampere branch circuits

required for the lighting and general use receptacle outlets in a one-family

dwelling with an area of 1900 square ft. - 🧠ANSWER ✔✔3 (A220.41)


Which of the following is not a standard classification for a branch circuit

supplying several loads?

A. 20 amps

B. 25 amps

C. 30 amps


D. 50 amps - 🧠ANSWER ✔✔B. 25 amps (A210.18)

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