Wisconsin Master Electrician Exam
Practice Questions and Correct Answers
(Verified Answers) Plus Rationales 2027
Q&A | Instant Download Pdf
1. Which edition of the National Electrical Code is specified by Wisconsin DSPS
for the Master Electrician examination beginning October 1, 2026?
A. 2017 NEC
B. 2020 NEC
C. 2023 NEC
D. 2026 NEC
Answer: C
Rationale: Wisconsin DSPS states that beginning October 1, 2026, the Master
Electrician examination uses the 2023 National Electrical Code, together with
Wisconsin Administrative Code SPS 305 and SPS 316. (DSPS)
2. What is the passing score specified by Wisconsin DSPS for the Master
Electrician examination?
A. 65%
B. 70%
C. 75%
D. 80%
Answer: B
Rationale: Wisconsin DSPS identifies 70% as the passing score for the Master
Electrician examination. (DSPS)
,3. Which Wisconsin Administrative Code chapter contains licensing provisions
for Wisconsin electrical trades, including the Master Electrician credential?
A. SPS 305
B. SPS 316
C. SPS 320
D. SPS 361
Answer: A
Rationale: SPS 305 contains Wisconsin credentialing and licensing provisions for
electrical and related trades. SPS 316 contains Wisconsin electrical code provisions
that modify or supplement the NEC. (DSPS)
4. Which Wisconsin Administrative Code chapter contains the state's electrical
code provisions that supplement or modify the NEC?
A. SPS 302
B. SPS 305
C. SPS 316
D. SPS 325
Answer: C
Rationale: Wisconsin's electrical code requirements are contained in SPS 316,
which works with the adopted NEC and includes Wisconsin-specific modifications
and requirements. (DSPS)
5. What is the primary purpose of an equipment grounding conductor?
A. Carry normal neutral current
B. Provide an effective fault-current path
C. Increase circuit voltage
D. Reduce the connected load
Answer: B
,Rationale: The equipment grounding conductor provides a conductive path for
fault current so that overcurrent protection can operate and clear a fault.
6. What is the primary purpose of bonding electrical equipment?
A. Establish a low-impedance path for fault current
B. Increase conductor ampacity
C. Reduce normal operating voltage
D. Provide additional circuit capacity
Answer: A
Rationale: Bonding connects normally non-current-carrying conductive parts so
that a fault can travel through an effective path back to the source.
7. Which NEC article primarily covers grounding and bonding?
A. Article 210
B. Article 225
C. Article 250
D. Article 430
Answer: C
Rationale: NEC Article 250 contains the principal requirements for grounding and
bonding electrical systems and equipment.
8. What is the primary function of a grounding electrode system?
A. Carry normal branch-circuit current
B. Connect the electrical system to earth as required
C. Replace the equipment grounding conductor
D. Increase the service voltage
Answer: B
, Rationale: The grounding electrode system establishes the required connection
between the electrical system and earth. It does not replace the effective fault-
current path provided by equipment grounding and bonding.
9. Which condition can require conductor ampacity adjustment?
A. Multiple current-carrying conductors installed together
B. The color of the conductor insulation
C. The number of wall switches in the building
D. The manufacturer's logo on the equipment
Answer: A
Rationale: Multiple current-carrying conductors in the same raceway or cable can
increase heat accumulation. The NEC provides adjustment requirements for
applicable installations.
10. What does conductor ampacity represent?
A. Maximum allowable current under specified conditions
B. Maximum conductor voltage
C. Conductor physical length
D. Conductor insulation thickness only
Answer: A
Rationale: Ampacity is the maximum current a conductor can carry continuously
under its conditions of use without exceeding its temperature rating.
11. What is the primary purpose of an overcurrent protective device?
A. Increase available fault current
B. Protect conductors and equipment against excessive current
C. Provide the grounding electrode
D. Increase motor speed
Answer: B
Practice Questions and Correct Answers
(Verified Answers) Plus Rationales 2027
Q&A | Instant Download Pdf
1. Which edition of the National Electrical Code is specified by Wisconsin DSPS
for the Master Electrician examination beginning October 1, 2026?
A. 2017 NEC
B. 2020 NEC
C. 2023 NEC
D. 2026 NEC
Answer: C
Rationale: Wisconsin DSPS states that beginning October 1, 2026, the Master
Electrician examination uses the 2023 National Electrical Code, together with
Wisconsin Administrative Code SPS 305 and SPS 316. (DSPS)
2. What is the passing score specified by Wisconsin DSPS for the Master
Electrician examination?
A. 65%
B. 70%
C. 75%
D. 80%
Answer: B
Rationale: Wisconsin DSPS identifies 70% as the passing score for the Master
Electrician examination. (DSPS)
,3. Which Wisconsin Administrative Code chapter contains licensing provisions
for Wisconsin electrical trades, including the Master Electrician credential?
A. SPS 305
B. SPS 316
C. SPS 320
D. SPS 361
Answer: A
Rationale: SPS 305 contains Wisconsin credentialing and licensing provisions for
electrical and related trades. SPS 316 contains Wisconsin electrical code provisions
that modify or supplement the NEC. (DSPS)
4. Which Wisconsin Administrative Code chapter contains the state's electrical
code provisions that supplement or modify the NEC?
A. SPS 302
B. SPS 305
C. SPS 316
D. SPS 325
Answer: C
Rationale: Wisconsin's electrical code requirements are contained in SPS 316,
which works with the adopted NEC and includes Wisconsin-specific modifications
and requirements. (DSPS)
5. What is the primary purpose of an equipment grounding conductor?
A. Carry normal neutral current
B. Provide an effective fault-current path
C. Increase circuit voltage
D. Reduce the connected load
Answer: B
,Rationale: The equipment grounding conductor provides a conductive path for
fault current so that overcurrent protection can operate and clear a fault.
6. What is the primary purpose of bonding electrical equipment?
A. Establish a low-impedance path for fault current
B. Increase conductor ampacity
C. Reduce normal operating voltage
D. Provide additional circuit capacity
Answer: A
Rationale: Bonding connects normally non-current-carrying conductive parts so
that a fault can travel through an effective path back to the source.
7. Which NEC article primarily covers grounding and bonding?
A. Article 210
B. Article 225
C. Article 250
D. Article 430
Answer: C
Rationale: NEC Article 250 contains the principal requirements for grounding and
bonding electrical systems and equipment.
8. What is the primary function of a grounding electrode system?
A. Carry normal branch-circuit current
B. Connect the electrical system to earth as required
C. Replace the equipment grounding conductor
D. Increase the service voltage
Answer: B
, Rationale: The grounding electrode system establishes the required connection
between the electrical system and earth. It does not replace the effective fault-
current path provided by equipment grounding and bonding.
9. Which condition can require conductor ampacity adjustment?
A. Multiple current-carrying conductors installed together
B. The color of the conductor insulation
C. The number of wall switches in the building
D. The manufacturer's logo on the equipment
Answer: A
Rationale: Multiple current-carrying conductors in the same raceway or cable can
increase heat accumulation. The NEC provides adjustment requirements for
applicable installations.
10. What does conductor ampacity represent?
A. Maximum allowable current under specified conditions
B. Maximum conductor voltage
C. Conductor physical length
D. Conductor insulation thickness only
Answer: A
Rationale: Ampacity is the maximum current a conductor can carry continuously
under its conditions of use without exceeding its temperature rating.
11. What is the primary purpose of an overcurrent protective device?
A. Increase available fault current
B. Protect conductors and equipment against excessive current
C. Provide the grounding electrode
D. Increase motor speed
Answer: B
