Arkansas Electrical Inspector Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A Instant
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1. During an inspection of a 120/240-volt single-phase dwelling service, the
inspector observes that the grounded conductor is bonded to the service
enclosure at the service disconnecting means. Which statement is correct?
A. The grounded conductor must never be bonded to the enclosure
B. The grounded conductor may be bonded only at downstream panelboards
C. The grounded conductor is permitted to be bonded at the service
disconnecting means
D. The grounded conductor must be isolated at the service disconnect
Answer: The grounded conductor is permitted to be bonded at the service
disconnecting means
Rationale: At the service disconnecting means, the grounded conductor is
connected to the grounding electrode system and equipment grounding
conductors. Downstream of that point, the grounded conductor generally must
remain isolated from equipment grounding conductors.
2. An inspector finds a panelboard installed in a location where the working
space is only 24 inches wide. What is the primary NEC concern?
A. Panelboard voltage rating
B. Conductor color
,C. Insufficient working space
D. Excessive circuit loading
Answer: Insufficient working space
Rationale: NEC 110.26 establishes minimum working-space dimensions around
electrical equipment. An inspector must verify width, depth, and headroom
requirements rather than simply confirming that the equipment is accessible.
3. A 20-ampere branch circuit supplies several 15-ampere and 20-ampere
receptacles in a commercial office. Which condition is generally
acceptable?
A. Only 20-ampere receptacles may be installed
B. Only 15-ampere receptacles may be installed
C. 15- or 20-ampere receptacles may be installed when permitted by the
applicable branch-circuit requirements
D. Receptacles are prohibited on 20-ampere circuits
Answer: 15- or 20-ampere receptacles may be installed when permitted by the
applicable branch-circuit requirements
Rationale: NEC 210.21(B) establishes receptacle ratings in relation to branch-
circuit ratings. A 20-ampere branch circuit can generally supply multiple 15-
ampere receptacles, subject to the specific table and occupancy requirements.
4. An inspector is examining a raceway containing four current-carrying
conductors. No adjustment is required solely because of the number of
conductors. Which condition would normally begin requiring ampacity
adjustment?
A. Two current-carrying conductors
B. Three current-carrying conductors
C. More than three current-carrying conductors
D. One grounding conductor
Answer: More than three current-carrying conductors
,Rationale: NEC 310.15(C)(1) requires adjustment when more than three current-
carrying conductors are installed together in a raceway, cable, or similar
location, subject to the listed exceptions.
5. A conductor is protected by a 50-ampere overcurrent device. The inspector
determines that the conductor's allowable ampacity is 45 amperes. Which
conclusion is most appropriate?
A. The installation is automatically compliant because 50 amperes is a standard
breaker size
B. The conductor may always be protected at 125% of its ampacity
C. The overcurrent protection generally exceeds the conductor's allowable
ampacity and requires evaluation under the applicable small-conductor or next-
size rules
D. The breaker must always be increased
Answer: The overcurrent protection generally exceeds the conductor's
allowable ampacity and requires evaluation under the applicable small-
conductor or next-size rules
Rationale: The inspector must compare conductor ampacity with the
overcurrent protection and then determine whether an exception, such as the
next-size-up rule, applies. Simply matching a standard breaker size is
insufficient.
6. A service disconnect is located remotely from the point where service
conductors enter the building. What is the inspector primarily concerned
with?
A. Lighting load
B. Transformer efficiency
C. Location and grouping of the service disconnecting means
D. Receptacle spacing
Answer: Location and grouping of the service disconnecting means
, Rationale: NEC Article 230 contains specific requirements governing service
disconnecting means, including accessibility, location, number, grouping, and
suitability.
7. Which conductor is normally permitted to be bare or covered and used as
an equipment grounding conductor?
A. Only the grounded conductor
B. Only a phase conductor
C. An equipment grounding conductor meeting the applicable NEC requirements
D. A communications conductor
Answer: An equipment grounding conductor meeting the applicable NEC
requirements
Rationale: NEC 250.118 identifies acceptable types of equipment grounding
conductors, including copper or aluminum conductors, certain metallic
raceways, and other recognized grounding paths.
8. A metal water pipe enters a building and is used as part of the grounding
electrode system. What should the inspector verify?
A. That it is connected only to the neutral
B. That it is painted green
C. That it is properly bonded into the grounding electrode system and
supplemented as required
D. That it is used instead of all other electrodes
Answer: That it is properly bonded into the grounding electrode system and
supplemented as required
Rationale: Metal underground water pipe can qualify as a grounding electrode
when it meets the applicable requirements. NEC 250.53(D) also addresses
supplemental grounding electrode requirements.
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A Instant
Download Pdf
1. During an inspection of a 120/240-volt single-phase dwelling service, the
inspector observes that the grounded conductor is bonded to the service
enclosure at the service disconnecting means. Which statement is correct?
A. The grounded conductor must never be bonded to the enclosure
B. The grounded conductor may be bonded only at downstream panelboards
C. The grounded conductor is permitted to be bonded at the service
disconnecting means
D. The grounded conductor must be isolated at the service disconnect
Answer: The grounded conductor is permitted to be bonded at the service
disconnecting means
Rationale: At the service disconnecting means, the grounded conductor is
connected to the grounding electrode system and equipment grounding
conductors. Downstream of that point, the grounded conductor generally must
remain isolated from equipment grounding conductors.
2. An inspector finds a panelboard installed in a location where the working
space is only 24 inches wide. What is the primary NEC concern?
A. Panelboard voltage rating
B. Conductor color
,C. Insufficient working space
D. Excessive circuit loading
Answer: Insufficient working space
Rationale: NEC 110.26 establishes minimum working-space dimensions around
electrical equipment. An inspector must verify width, depth, and headroom
requirements rather than simply confirming that the equipment is accessible.
3. A 20-ampere branch circuit supplies several 15-ampere and 20-ampere
receptacles in a commercial office. Which condition is generally
acceptable?
A. Only 20-ampere receptacles may be installed
B. Only 15-ampere receptacles may be installed
C. 15- or 20-ampere receptacles may be installed when permitted by the
applicable branch-circuit requirements
D. Receptacles are prohibited on 20-ampere circuits
Answer: 15- or 20-ampere receptacles may be installed when permitted by the
applicable branch-circuit requirements
Rationale: NEC 210.21(B) establishes receptacle ratings in relation to branch-
circuit ratings. A 20-ampere branch circuit can generally supply multiple 15-
ampere receptacles, subject to the specific table and occupancy requirements.
4. An inspector is examining a raceway containing four current-carrying
conductors. No adjustment is required solely because of the number of
conductors. Which condition would normally begin requiring ampacity
adjustment?
A. Two current-carrying conductors
B. Three current-carrying conductors
C. More than three current-carrying conductors
D. One grounding conductor
Answer: More than three current-carrying conductors
,Rationale: NEC 310.15(C)(1) requires adjustment when more than three current-
carrying conductors are installed together in a raceway, cable, or similar
location, subject to the listed exceptions.
5. A conductor is protected by a 50-ampere overcurrent device. The inspector
determines that the conductor's allowable ampacity is 45 amperes. Which
conclusion is most appropriate?
A. The installation is automatically compliant because 50 amperes is a standard
breaker size
B. The conductor may always be protected at 125% of its ampacity
C. The overcurrent protection generally exceeds the conductor's allowable
ampacity and requires evaluation under the applicable small-conductor or next-
size rules
D. The breaker must always be increased
Answer: The overcurrent protection generally exceeds the conductor's
allowable ampacity and requires evaluation under the applicable small-
conductor or next-size rules
Rationale: The inspector must compare conductor ampacity with the
overcurrent protection and then determine whether an exception, such as the
next-size-up rule, applies. Simply matching a standard breaker size is
insufficient.
6. A service disconnect is located remotely from the point where service
conductors enter the building. What is the inspector primarily concerned
with?
A. Lighting load
B. Transformer efficiency
C. Location and grouping of the service disconnecting means
D. Receptacle spacing
Answer: Location and grouping of the service disconnecting means
, Rationale: NEC Article 230 contains specific requirements governing service
disconnecting means, including accessibility, location, number, grouping, and
suitability.
7. Which conductor is normally permitted to be bare or covered and used as
an equipment grounding conductor?
A. Only the grounded conductor
B. Only a phase conductor
C. An equipment grounding conductor meeting the applicable NEC requirements
D. A communications conductor
Answer: An equipment grounding conductor meeting the applicable NEC
requirements
Rationale: NEC 250.118 identifies acceptable types of equipment grounding
conductors, including copper or aluminum conductors, certain metallic
raceways, and other recognized grounding paths.
8. A metal water pipe enters a building and is used as part of the grounding
electrode system. What should the inspector verify?
A. That it is connected only to the neutral
B. That it is painted green
C. That it is properly bonded into the grounding electrode system and
supplemented as required
D. That it is used instead of all other electrodes
Answer: That it is properly bonded into the grounding electrode system and
supplemented as required
Rationale: Metal underground water pipe can qualify as a grounding electrode
when it meets the applicable requirements. NEC 250.53(D) also addresses
supplemental grounding electrode requirements.
