UTAH MASTER ELECTRICIAN CERTIFICATION
PRACTICE EXAM Newest (2026 Update) Actual
Practice Questions – Set 100 Most Common
Exam Questions And Answers In Details 100%
Verified Exam Highly Recommendable For
Grade A+
1. What is the minimum cover depth for direct-buried UF cable under a
residential driveway?
A. 12 inches
B. 18 inches
C. 24 inches
D. 30 inches
✔ Correct Answer: C. 24 inches
Explanation: NEC Table 300.5 requires 24 inches of cover for direct-buried
cable under driveways.
2. A continuous load is defined as a load expected to run for how long?
A. 1 hour or more
B. 2 hours or more
C. 3 hours or more
D. 4 hours or more
✔ Correct Answer: C. 3 hours or more
Explanation: NEC defines continuous loads as those expected to operate
for 3 hours or more.
3. What is the maximum allowable voltage drop for branch circuits
recommended by NEC?
A. 2%
B. 3%
, C. 5%
D. 10%
✔ Correct Answer: B. 3%
Explanation: NEC recommends a maximum of 3% voltage drop for branch
circuits for efficiency.
4. What color insulation is used for grounded conductors in 120/208V
systems?
A. Green
B. Black
C. White or gray
D. Red
✔ Correct Answer: C. White or gray
Explanation: NEC requires grounded conductors to be identified by white
or gray insulation.
5. What is the purpose of a bonding jumper?
A. Increase voltage
B. Provide grounding path continuity
C. Reduce current flow
D. Protect against overload
✔ Correct Answer: B. Provide grounding path continuity
Explanation: Bonding jumpers ensure electrical continuity between metal
parts.
6. What NEC article covers grounding and bonding?
A. 210
B. 250
C. 300
D. 400
✔ Correct Answer: B. 250
Explanation: Article 250 addresses grounding and bonding requirements.
, 7. What is the maximum number of conductors in a 4x4 box with device?
A. Based on volume calculation
B. 6
C. 8
D. 10
✔ Correct Answer: A. Based on volume calculation
Explanation: Box fill is determined by cubic inch volume per conductor per
NEC 314.16.
8. Scenario: A 20A circuit supplies a continuous lighting load. Minimum circuit
rating?
A. 20A
B. 25A
C. 30A
D. 40A
✔ Correct Answer: B. 25A
Explanation: Continuous loads require 125% sizing (20A × 1.25 = 25A).
9. What is the standard frequency in the U.S.?
A. 50 Hz
B. 55 Hz
C. 60 Hz
D. 120 Hz
✔ Correct Answer: C. 60 Hz
Explanation: Standard U.S. electrical systems operate at 60 Hz.
10.What type of motor duty requires special overload protection?
A. Intermittent
B. Continuous
C. Short-time
D. Varying duty
✔ Correct Answer: B. Continuous
Explanation: Continuous duty motors require overload protection per NEC
Article 430.
PRACTICE EXAM Newest (2026 Update) Actual
Practice Questions – Set 100 Most Common
Exam Questions And Answers In Details 100%
Verified Exam Highly Recommendable For
Grade A+
1. What is the minimum cover depth for direct-buried UF cable under a
residential driveway?
A. 12 inches
B. 18 inches
C. 24 inches
D. 30 inches
✔ Correct Answer: C. 24 inches
Explanation: NEC Table 300.5 requires 24 inches of cover for direct-buried
cable under driveways.
2. A continuous load is defined as a load expected to run for how long?
A. 1 hour or more
B. 2 hours or more
C. 3 hours or more
D. 4 hours or more
✔ Correct Answer: C. 3 hours or more
Explanation: NEC defines continuous loads as those expected to operate
for 3 hours or more.
3. What is the maximum allowable voltage drop for branch circuits
recommended by NEC?
A. 2%
B. 3%
, C. 5%
D. 10%
✔ Correct Answer: B. 3%
Explanation: NEC recommends a maximum of 3% voltage drop for branch
circuits for efficiency.
4. What color insulation is used for grounded conductors in 120/208V
systems?
A. Green
B. Black
C. White or gray
D. Red
✔ Correct Answer: C. White or gray
Explanation: NEC requires grounded conductors to be identified by white
or gray insulation.
5. What is the purpose of a bonding jumper?
A. Increase voltage
B. Provide grounding path continuity
C. Reduce current flow
D. Protect against overload
✔ Correct Answer: B. Provide grounding path continuity
Explanation: Bonding jumpers ensure electrical continuity between metal
parts.
6. What NEC article covers grounding and bonding?
A. 210
B. 250
C. 300
D. 400
✔ Correct Answer: B. 250
Explanation: Article 250 addresses grounding and bonding requirements.
, 7. What is the maximum number of conductors in a 4x4 box with device?
A. Based on volume calculation
B. 6
C. 8
D. 10
✔ Correct Answer: A. Based on volume calculation
Explanation: Box fill is determined by cubic inch volume per conductor per
NEC 314.16.
8. Scenario: A 20A circuit supplies a continuous lighting load. Minimum circuit
rating?
A. 20A
B. 25A
C. 30A
D. 40A
✔ Correct Answer: B. 25A
Explanation: Continuous loads require 125% sizing (20A × 1.25 = 25A).
9. What is the standard frequency in the U.S.?
A. 50 Hz
B. 55 Hz
C. 60 Hz
D. 120 Hz
✔ Correct Answer: C. 60 Hz
Explanation: Standard U.S. electrical systems operate at 60 Hz.
10.What type of motor duty requires special overload protection?
A. Intermittent
B. Continuous
C. Short-time
D. Varying duty
✔ Correct Answer: B. Continuous
Explanation: Continuous duty motors require overload protection per NEC
Article 430.
