Michigan Electrical Inspector Exam
Questions and Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Which edition of the National Electrical Code is currently identified by
Michigan LARA as the current Electrical Code?
A. 2017 NEC
B. 2020 NEC
C. 2023 NEC
D. 2026 NEC
Correct Answer: C. 2023 NEC
Rationale: Michigan LARA identifies the 2023 National Electrical Code as the
current Electrical Code, effective March 12, 2024. Michigan's Part 8 rules and
applicable administrative provisions must also be considered when evaluating
installations in the state.
2. Which organization publishes the National Electrical Code?
A. NFPA
B. OSHA
C. ICC
D. IEEE
Correct Answer: A. NFPA
Rationale: The National Electrical Code, or NFPA 70, is published by the National
Fire Protection Association. Michigan adopts the NEC through its electrical code
rules with specified modifications and administrative provisions.
,3. What is the primary purpose of the National Electrical Code?
A. Establish electrical utility rates
B. Provide practical safeguards for persons and property from electrical hazards
C. Establish contractor wages
D. Regulate electrical equipment manufacturing costs
Correct Answer: B. Provide practical safeguards for persons and property from
electrical hazards
Rationale: The NEC establishes requirements intended to provide practical
safeguards for people and property from hazards arising from the use of
electricity.
4. Which NEC article contains general requirements for wiring methods and
materials?
A. Article 250
B. Article 300
C. Article 430
D. Article 680
Correct Answer: B. Article 300
Rationale: NEC Article 300 contains general requirements for wiring methods and
materials, including provisions addressing installation, protection, and support of
conductors and raceways.
5. What is the primary function of an overcurrent protective device?
A. Increase available fault current
B. Protect conductors from excessive current
C. Increase circuit voltage
D. Improve power-factor correction
Correct Answer: B. Protect conductors from excessive current
,Rationale: Overcurrent devices such as circuit breakers and fuses are intended to
protect conductors and equipment from excessive current caused by overloads or
faults.
6. Which device is commonly used to provide overcurrent protection for a
branch circuit?
A. Circuit breaker
B. Receptacle cover
C. Junction box
D. Disconnect handle
Correct Answer: A. Circuit breaker
Rationale: Circuit breakers are overcurrent protective devices that open a circuit
when current exceeds the device's permitted operating conditions.
7. What is the primary purpose of equipment grounding?
A. Increase normal operating voltage
B. Provide a low-impedance path for fault current
C. Reduce conductor ampacity
D. Increase circuit resistance
Correct Answer: B. Provide a low-impedance path for fault current
Rationale: Equipment grounding provides a path intended to facilitate operation
of overcurrent protective devices during a fault and reduce dangerous voltage on
normally non-current-carrying metal parts.
8. Which conductor normally carries current during normal operation of a
typical single-phase circuit?
A. Equipment grounding conductor
B. Grounding electrode conductor
, C. Ungrounded conductor
D. Bonding jumper only
Correct Answer: C. Ungrounded conductor
Rationale: The ungrounded conductor, commonly called the hot conductor,
normally carries current from the source to the load. Grounding and bonding
conductors serve different functions and normally do not carry load current.
9. What is the primary function of the grounded conductor in a typical single-
phase system?
A. Carry normal return current
B. Serve exclusively as a grounding electrode
C. Replace the equipment grounding conductor
D. Provide overcurrent protection
Correct Answer: A. Carry normal return current
Rationale: In a typical single-phase circuit, the grounded conductor provides the
intentional return path for current from the load back to the source.
10. What is the primary purpose of bonding metal electrical equipment?
A. Increase circuit voltage
B. Establish electrical continuity between conductive parts
C. Eliminate the need for overcurrent protection
D. Increase conductor resistance
Correct Answer: B. Establish electrical continuity between conductive parts
Rationale: Bonding connects conductive parts together to establish electrical
continuity and provide an effective path for fault current where required.
11. Where is the grounded conductor generally bonded to the equipment
grounding system in a typical service?
Questions and Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Which edition of the National Electrical Code is currently identified by
Michigan LARA as the current Electrical Code?
A. 2017 NEC
B. 2020 NEC
C. 2023 NEC
D. 2026 NEC
Correct Answer: C. 2023 NEC
Rationale: Michigan LARA identifies the 2023 National Electrical Code as the
current Electrical Code, effective March 12, 2024. Michigan's Part 8 rules and
applicable administrative provisions must also be considered when evaluating
installations in the state.
2. Which organization publishes the National Electrical Code?
A. NFPA
B. OSHA
C. ICC
D. IEEE
Correct Answer: A. NFPA
Rationale: The National Electrical Code, or NFPA 70, is published by the National
Fire Protection Association. Michigan adopts the NEC through its electrical code
rules with specified modifications and administrative provisions.
,3. What is the primary purpose of the National Electrical Code?
A. Establish electrical utility rates
B. Provide practical safeguards for persons and property from electrical hazards
C. Establish contractor wages
D. Regulate electrical equipment manufacturing costs
Correct Answer: B. Provide practical safeguards for persons and property from
electrical hazards
Rationale: The NEC establishes requirements intended to provide practical
safeguards for people and property from hazards arising from the use of
electricity.
4. Which NEC article contains general requirements for wiring methods and
materials?
A. Article 250
B. Article 300
C. Article 430
D. Article 680
Correct Answer: B. Article 300
Rationale: NEC Article 300 contains general requirements for wiring methods and
materials, including provisions addressing installation, protection, and support of
conductors and raceways.
5. What is the primary function of an overcurrent protective device?
A. Increase available fault current
B. Protect conductors from excessive current
C. Increase circuit voltage
D. Improve power-factor correction
Correct Answer: B. Protect conductors from excessive current
,Rationale: Overcurrent devices such as circuit breakers and fuses are intended to
protect conductors and equipment from excessive current caused by overloads or
faults.
6. Which device is commonly used to provide overcurrent protection for a
branch circuit?
A. Circuit breaker
B. Receptacle cover
C. Junction box
D. Disconnect handle
Correct Answer: A. Circuit breaker
Rationale: Circuit breakers are overcurrent protective devices that open a circuit
when current exceeds the device's permitted operating conditions.
7. What is the primary purpose of equipment grounding?
A. Increase normal operating voltage
B. Provide a low-impedance path for fault current
C. Reduce conductor ampacity
D. Increase circuit resistance
Correct Answer: B. Provide a low-impedance path for fault current
Rationale: Equipment grounding provides a path intended to facilitate operation
of overcurrent protective devices during a fault and reduce dangerous voltage on
normally non-current-carrying metal parts.
8. Which conductor normally carries current during normal operation of a
typical single-phase circuit?
A. Equipment grounding conductor
B. Grounding electrode conductor
, C. Ungrounded conductor
D. Bonding jumper only
Correct Answer: C. Ungrounded conductor
Rationale: The ungrounded conductor, commonly called the hot conductor,
normally carries current from the source to the load. Grounding and bonding
conductors serve different functions and normally do not carry load current.
9. What is the primary function of the grounded conductor in a typical single-
phase system?
A. Carry normal return current
B. Serve exclusively as a grounding electrode
C. Replace the equipment grounding conductor
D. Provide overcurrent protection
Correct Answer: A. Carry normal return current
Rationale: In a typical single-phase circuit, the grounded conductor provides the
intentional return path for current from the load back to the source.
10. What is the primary purpose of bonding metal electrical equipment?
A. Increase circuit voltage
B. Establish electrical continuity between conductive parts
C. Eliminate the need for overcurrent protection
D. Increase conductor resistance
Correct Answer: B. Establish electrical continuity between conductive parts
Rationale: Bonding connects conductive parts together to establish electrical
continuity and provide an effective path for fault current where required.
11. Where is the grounded conductor generally bonded to the equipment
grounding system in a typical service?
