Indiana Master Electrician Practice
Exam Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. The primary responsibility of a Master Electrician on a jobsite is to:
A. Perform all rough-in work personally
B. Supervise apprentices only
C. Design electrical systems exclusively
D. Ensure all electrical work complies with the NEC and applicable
codes
Answer: D
Rationale: A Master Electrician is legally responsible for code compliance,
safety, supervision, and overall quality of electrical installations.
2. Which NEC article governs electrical installations in dwelling units?
A. Article 100
B. Article 210
C. Article 220
D. Article 210
Answer: D
Rationale: Article 210 covers branch circuits, receptacles, and outlets
commonly used in dwelling units.
, 3. What is the minimum clearance required in front of electrical panels
rated 0–600 volts?
A. 24 inches
B. 30 inches
C. 36 inches
D. 42 inches
Answer: C
Rationale: NEC 110.26 requires a minimum of 36 inches of clear working
space in front of electrical equipment.
4. Grounding electrode conductors are primarily intended to:
A. Carry load current
B. Protect equipment from overload
C. Stabilize system voltage and dissipate lightning/surge energy
D. Replace equipment grounding conductors
Answer: C
Rationale: The grounding electrode system stabilizes voltage and safely
dissipates transient voltages, not normal current.
5. Which conductor is permitted to be bare?
A. Neutral conductor
B. Ungrounded conductor
C. Equipment grounding conductor
D. Grounding electrode conductor only
Answer: C
Rationale: Equipment grounding conductors may be bare or insulated per
NEC requirements.
, 6. What is the maximum allowable voltage drop recommended for
branch circuits?
A. 2%
B. 3%
C. 4%
D. 5%
Answer: B
Rationale: NEC recommends no more than 3% voltage drop on branch
circuits for efficiency and performance.
7. Which NEC article covers grounding and bonding?
A. Article 110
B. Article 200
C. Article 250
D. Article 300
Answer: C
Rationale: Article 250 contains all grounding and bonding requirements.
8. A continuous load is defined as a load expected to run for:
A. 1 hour or more
B. 2 hours or more
C. 3 hours or more
D. 4 hours or more
Answer: C
Rationale: NEC defines a continuous load as one operating for 3 hours or
more.
, 9. For continuous loads, overcurrent devices must be sized at:
A. 100% of load
B. 110% of load
C. 125% of load
D. 150% of load
Answer: C
Rationale: NEC requires overcurrent protection at 125% for continuous
loads to prevent overheating.
10. Which wiring method is NOT permitted in a plenum space?
A. Type MC cable
B. Rigid metal conduit
C. EMT
D. Type NM cable
Answer: D
Rationale: NM cable is not rated for plenum spaces due to fire and smoke
concerns.
11. The NEC is updated on which cycle?
A. Every year
B. Every 2 years
C. Every 3 years
D. Every 5 years
Answer: C
Rationale: The NEC is revised and published on a three-year cycle.
12. What color insulation is typically used for grounding conductors?
A. White
Exam Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. The primary responsibility of a Master Electrician on a jobsite is to:
A. Perform all rough-in work personally
B. Supervise apprentices only
C. Design electrical systems exclusively
D. Ensure all electrical work complies with the NEC and applicable
codes
Answer: D
Rationale: A Master Electrician is legally responsible for code compliance,
safety, supervision, and overall quality of electrical installations.
2. Which NEC article governs electrical installations in dwelling units?
A. Article 100
B. Article 210
C. Article 220
D. Article 210
Answer: D
Rationale: Article 210 covers branch circuits, receptacles, and outlets
commonly used in dwelling units.
, 3. What is the minimum clearance required in front of electrical panels
rated 0–600 volts?
A. 24 inches
B. 30 inches
C. 36 inches
D. 42 inches
Answer: C
Rationale: NEC 110.26 requires a minimum of 36 inches of clear working
space in front of electrical equipment.
4. Grounding electrode conductors are primarily intended to:
A. Carry load current
B. Protect equipment from overload
C. Stabilize system voltage and dissipate lightning/surge energy
D. Replace equipment grounding conductors
Answer: C
Rationale: The grounding electrode system stabilizes voltage and safely
dissipates transient voltages, not normal current.
5. Which conductor is permitted to be bare?
A. Neutral conductor
B. Ungrounded conductor
C. Equipment grounding conductor
D. Grounding electrode conductor only
Answer: C
Rationale: Equipment grounding conductors may be bare or insulated per
NEC requirements.
, 6. What is the maximum allowable voltage drop recommended for
branch circuits?
A. 2%
B. 3%
C. 4%
D. 5%
Answer: B
Rationale: NEC recommends no more than 3% voltage drop on branch
circuits for efficiency and performance.
7. Which NEC article covers grounding and bonding?
A. Article 110
B. Article 200
C. Article 250
D. Article 300
Answer: C
Rationale: Article 250 contains all grounding and bonding requirements.
8. A continuous load is defined as a load expected to run for:
A. 1 hour or more
B. 2 hours or more
C. 3 hours or more
D. 4 hours or more
Answer: C
Rationale: NEC defines a continuous load as one operating for 3 hours or
more.
, 9. For continuous loads, overcurrent devices must be sized at:
A. 100% of load
B. 110% of load
C. 125% of load
D. 150% of load
Answer: C
Rationale: NEC requires overcurrent protection at 125% for continuous
loads to prevent overheating.
10. Which wiring method is NOT permitted in a plenum space?
A. Type MC cable
B. Rigid metal conduit
C. EMT
D. Type NM cable
Answer: D
Rationale: NM cable is not rated for plenum spaces due to fire and smoke
concerns.
11. The NEC is updated on which cycle?
A. Every year
B. Every 2 years
C. Every 3 years
D. Every 5 years
Answer: C
Rationale: The NEC is revised and published on a three-year cycle.
12. What color insulation is typically used for grounding conductors?
A. White
