RESIDENTIAL ELECTRICAL WIRING
INSPECTION EXAMINATION WITH ACTUAL
QUESTIONS AND VERIFIED ANSWERS,
PLUS EXPLAINED RATIONALES/EXPERT
VERIFIED FOR GUARANTEED 100% PASS
2026/LATEST UPDATE/INSTANT
DOWNLOAD PDF
1. During a residential inspection, a 20-ampere branch circuit
supplying receptacle outlets is wired with 14 AWG copper
conductors. What is the primary code violation?
A. Receptacles must be tamper-resistant
B. Conductor insulation rating is too low
C. 14 AWG copper is undersized for a 20-amp circuit
D. Grounding conductor is missing
Answer: C. 14 AWG copper is undersized for a 20-amp circuit
Rationale: NEC requirements permit 14 AWG copper conductors to be
protected at a maximum of 15 amperes. A 20-amp circuit requires at
least 12 AWG copper conductors. Using undersized conductors creates
an overheating hazard.
2. An inspector observes receptacle outlets installed so that no point
along a wall space is more than what distance from a receptacle?
A. 4 feet
B. 6 feet
C. 8 feet
D. 12 feet
Answer: B. 6 feet
1
,Rationale: The 6-foot rule requires receptacles to be arranged so no
point along a wall line is more than 6 feet from a receptacle outlet,
minimizing the need for extension cords.
3. What is the minimum number of 20-amp small-appliance branch
circuits required in a dwelling kitchen?
A. One
B. Two
C. Three
D. Four
Answer: B. Two
Rationale: Residential kitchens require at least two 20-amp small-
appliance branch circuits to supply countertop receptacles and
designated dining areas.
4. A bathroom receptacle circuit supplies receptacles in multiple
bathrooms. Which condition is permitted?
A. Circuit also serves lighting loads
B. Circuit only serves receptacle outlets
C. Circuit serves garage receptacles
D. Circuit serves outdoor receptacles
Answer: B. Circuit only serves receptacle outlets
Rationale: A 20-amp bathroom receptacle circuit may supply
receptacle outlets in multiple bathrooms only if it supplies no other
loads.
2
, 5. A residential service disconnect is rated 200 amperes. What is the
minimum required service disconnecting means?
A. Single disconnect or grouped disconnects as permitted
B. Lighting switch only
C. GFCI breaker only
D. Transfer switch only
Answer: A. Single disconnect or grouped disconnects as permitted
Rationale: The service disconnecting means must disconnect all
service conductors and comply with grouping requirements.
6. Which receptacle location requires GFCI protection?
A. Bedroom wall receptacle
B. Living room receptacle
C. Garage receptacle
D. Dining room receptacle
Answer: C. Garage receptacle
Rationale: All garage receptacles in dwelling units require GFCI
protection due to increased shock hazards.
7. AFCI protection is generally required for branch circuits supplying
outlets in which location?
A. Bedrooms
B. Attics only
C. Crawl spaces only
D. Service equipment rooms only
Answer: A. Bedrooms
3
, Rationale: AFCI protection is required in bedrooms and many other
habitable areas to reduce fire hazards caused by arcing faults.
8. During inspection, a panelboard has unused openings without
covers. What is the concern?
A. Voltage drop
B. Arc flash exposure and accidental contact
C. Ground fault
D. Harmonic distortion
Answer: B. Arc flash exposure and accidental contact
Rationale: Unused openings must be closed to prevent accidental
contact with energized parts and reduce fire risks.
9. What is the minimum headroom generally required in front of
electrical equipment?
A. 5 feet
B. 5.5 feet
C. 6 feet
D. 6.5 feet
Answer: D. 6.5 feet
Rationale: Working spaces around electrical equipment generally
require a minimum headroom of 6.5 feet.
10. The grounded conductor is commonly identified by which
color?
A. Green
B. Bare copper
4
INSPECTION EXAMINATION WITH ACTUAL
QUESTIONS AND VERIFIED ANSWERS,
PLUS EXPLAINED RATIONALES/EXPERT
VERIFIED FOR GUARANTEED 100% PASS
2026/LATEST UPDATE/INSTANT
DOWNLOAD PDF
1. During a residential inspection, a 20-ampere branch circuit
supplying receptacle outlets is wired with 14 AWG copper
conductors. What is the primary code violation?
A. Receptacles must be tamper-resistant
B. Conductor insulation rating is too low
C. 14 AWG copper is undersized for a 20-amp circuit
D. Grounding conductor is missing
Answer: C. 14 AWG copper is undersized for a 20-amp circuit
Rationale: NEC requirements permit 14 AWG copper conductors to be
protected at a maximum of 15 amperes. A 20-amp circuit requires at
least 12 AWG copper conductors. Using undersized conductors creates
an overheating hazard.
2. An inspector observes receptacle outlets installed so that no point
along a wall space is more than what distance from a receptacle?
A. 4 feet
B. 6 feet
C. 8 feet
D. 12 feet
Answer: B. 6 feet
1
,Rationale: The 6-foot rule requires receptacles to be arranged so no
point along a wall line is more than 6 feet from a receptacle outlet,
minimizing the need for extension cords.
3. What is the minimum number of 20-amp small-appliance branch
circuits required in a dwelling kitchen?
A. One
B. Two
C. Three
D. Four
Answer: B. Two
Rationale: Residential kitchens require at least two 20-amp small-
appliance branch circuits to supply countertop receptacles and
designated dining areas.
4. A bathroom receptacle circuit supplies receptacles in multiple
bathrooms. Which condition is permitted?
A. Circuit also serves lighting loads
B. Circuit only serves receptacle outlets
C. Circuit serves garage receptacles
D. Circuit serves outdoor receptacles
Answer: B. Circuit only serves receptacle outlets
Rationale: A 20-amp bathroom receptacle circuit may supply
receptacle outlets in multiple bathrooms only if it supplies no other
loads.
2
, 5. A residential service disconnect is rated 200 amperes. What is the
minimum required service disconnecting means?
A. Single disconnect or grouped disconnects as permitted
B. Lighting switch only
C. GFCI breaker only
D. Transfer switch only
Answer: A. Single disconnect or grouped disconnects as permitted
Rationale: The service disconnecting means must disconnect all
service conductors and comply with grouping requirements.
6. Which receptacle location requires GFCI protection?
A. Bedroom wall receptacle
B. Living room receptacle
C. Garage receptacle
D. Dining room receptacle
Answer: C. Garage receptacle
Rationale: All garage receptacles in dwelling units require GFCI
protection due to increased shock hazards.
7. AFCI protection is generally required for branch circuits supplying
outlets in which location?
A. Bedrooms
B. Attics only
C. Crawl spaces only
D. Service equipment rooms only
Answer: A. Bedrooms
3
, Rationale: AFCI protection is required in bedrooms and many other
habitable areas to reduce fire hazards caused by arcing faults.
8. During inspection, a panelboard has unused openings without
covers. What is the concern?
A. Voltage drop
B. Arc flash exposure and accidental contact
C. Ground fault
D. Harmonic distortion
Answer: B. Arc flash exposure and accidental contact
Rationale: Unused openings must be closed to prevent accidental
contact with energized parts and reduce fire risks.
9. What is the minimum headroom generally required in front of
electrical equipment?
A. 5 feet
B. 5.5 feet
C. 6 feet
D. 6.5 feet
Answer: D. 6.5 feet
Rationale: Working spaces around electrical equipment generally
require a minimum headroom of 6.5 feet.
10. The grounded conductor is commonly identified by which
color?
A. Green
B. Bare copper
4
