MINNESOTA JOURNEYMAN ELECTRICIAN
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. A 120/240V single-phase system supplies a load of 24 amps. What is the
minimum size copper THHN conductor required per NEC ampacity rules?
A. #14 AWG
B. #12 AWG
C. #10 AWG
D. #8 AWG
Correct answer: B) [#12 AWG] ✓
Rationale: A #12 AWG copper THHN conductor is rated 20A at 60°C, but 25A
at 75°C terminations; thus it safely supports a 24A load under standard
conditions.
2. According to NEC, what is the maximum number of 12 AWG conductors
allowed in a 1/2-inch EMT conduit?
A. 6
B. 9
C. 11
D. 14
Correct answer: B) [9] ✓
Rationale: Conduit fill limits under NEC Chapter 9 allow up to nine 12 AWG
THHN conductors in 1/2-inch EMT at 40% fill.
,3. A dwelling kitchen small appliance branch circuit must be rated at
minimum:
A. 15A
B. 20A
C. 25A
D. 30A
Correct answer: B) [20A] ✓
Rationale: NEC requires at least two 20-amp small appliance branch circuits
for kitchen receptacles.
4. What is the minimum burial depth for residential 120V UF cable without
conduit under a yard?
A. 12 inches
B. 18 inches
C. 24 inches
D. 30 inches
Correct answer: B) [18 inches] ✓
Rationale: NEC Table 300.5 requires 18 inches cover for direct-buried UF
cable in residential branch circuits.
5. 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
Correct answer: C) [3 hours or more] ✓
Rationale: NEC defines continuous load as operating for 3 hours or longer at
maximum current.
6. A 480V three-phase motor draws 18A. What is the minimum circuit
ampacity after NEC 125% rule?
A. 18A
B. 20A
C. 22.5A
, D. 25A
Correct answer: D) [25A] ✓
Rationale: Motor circuits require 125% of FLC: 18 × 1.25 = 22.5A, rounded
up to next standard size 25A.
7. Which device is required for personnel protection in bathroom receptacles?
A. AFCI
B. GFCI
C. Surge protector
D. Disconnect switch
Correct answer: B) [GFCI] ✓
Rationale: GFCI protection is required for bathroom receptacles per NEC
210.8.
8. The maximum voltage drop recommended for branch circuits is:
A. 2%
B. 3%
C. 5%
D. 8%
Correct answer: B) [3%] ✓
Rationale: NEC informational notes recommend 3% maximum voltage drop
on branch circuits.
9. What color is typically used for a grounded neutral conductor?
A. Green
B. White
C. Black
D. Red
Correct answer: B) [White] ✓
Rationale: White or gray insulation identifies grounded neutral conductors
per NEC rules.
10.What is the minimum clearance above a residential driveway for overhead
service conductors?
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. A 120/240V single-phase system supplies a load of 24 amps. What is the
minimum size copper THHN conductor required per NEC ampacity rules?
A. #14 AWG
B. #12 AWG
C. #10 AWG
D. #8 AWG
Correct answer: B) [#12 AWG] ✓
Rationale: A #12 AWG copper THHN conductor is rated 20A at 60°C, but 25A
at 75°C terminations; thus it safely supports a 24A load under standard
conditions.
2. According to NEC, what is the maximum number of 12 AWG conductors
allowed in a 1/2-inch EMT conduit?
A. 6
B. 9
C. 11
D. 14
Correct answer: B) [9] ✓
Rationale: Conduit fill limits under NEC Chapter 9 allow up to nine 12 AWG
THHN conductors in 1/2-inch EMT at 40% fill.
,3. A dwelling kitchen small appliance branch circuit must be rated at
minimum:
A. 15A
B. 20A
C. 25A
D. 30A
Correct answer: B) [20A] ✓
Rationale: NEC requires at least two 20-amp small appliance branch circuits
for kitchen receptacles.
4. What is the minimum burial depth for residential 120V UF cable without
conduit under a yard?
A. 12 inches
B. 18 inches
C. 24 inches
D. 30 inches
Correct answer: B) [18 inches] ✓
Rationale: NEC Table 300.5 requires 18 inches cover for direct-buried UF
cable in residential branch circuits.
5. 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
Correct answer: C) [3 hours or more] ✓
Rationale: NEC defines continuous load as operating for 3 hours or longer at
maximum current.
6. A 480V three-phase motor draws 18A. What is the minimum circuit
ampacity after NEC 125% rule?
A. 18A
B. 20A
C. 22.5A
, D. 25A
Correct answer: D) [25A] ✓
Rationale: Motor circuits require 125% of FLC: 18 × 1.25 = 22.5A, rounded
up to next standard size 25A.
7. Which device is required for personnel protection in bathroom receptacles?
A. AFCI
B. GFCI
C. Surge protector
D. Disconnect switch
Correct answer: B) [GFCI] ✓
Rationale: GFCI protection is required for bathroom receptacles per NEC
210.8.
8. The maximum voltage drop recommended for branch circuits is:
A. 2%
B. 3%
C. 5%
D. 8%
Correct answer: B) [3%] ✓
Rationale: NEC informational notes recommend 3% maximum voltage drop
on branch circuits.
9. What color is typically used for a grounded neutral conductor?
A. Green
B. White
C. Black
D. Red
Correct answer: B) [White] ✓
Rationale: White or gray insulation identifies grounded neutral conductors
per NEC rules.
10.What is the minimum clearance above a residential driveway for overhead
service conductors?
