KANSAS MASTER ELECTRICIAN EXAM
Newest (2026 Update) Actual Practice
Questions – Set 100 Most Common
Exam Questions And Answers In Details
100% Verified Exam
1. A 120V branch circuit supplies lighting loads totaling 1,800 watts. What is
the approximate load current?
A. 10 A
B. 12 A
C. 15 A
D. 20 A
✔ Correct Answer: B (B. 15 A) ✔
Calculation: I = P ÷ V = 1800 ÷ 120 = 15 amps. This follows standard Ohm’s Law
power relationship used in load calculations.
2. According to NEC practice, what is the minimum number of 20A small
appliance branch circuits required in a kitchen?
A. 1
B. 2
C. 3
D. 4
,✔ Correct Answer: B (B. 2) ✔
Kitchen small appliance circuits require at least two 20A circuits for countertop
receptacles.
3. What is the primary purpose of a ground-fault circuit interrupter (GFCI)?
A. Prevent overloads
B. Prevent short circuits
C. Protect against shock hazards
D. Increase circuit capacity
✔ Correct Answer: C (C. Protect against shock hazards) ✔
GFCIs detect leakage current and quickly disconnect power to prevent electric
shock.
4. A 240V load draws 30 amps. What is the power in watts?
A. 4,800 W
B. 6,000 W
C. 7,200 W
D. 8,400 W
✔ Correct Answer: C (C. 7,200 W) ✔
P = V × I = 240 × 30 = 7,200 watts.
5. Which conductor is typically used as the equipment grounding conductor?
A. White
B. Red
C. Green
D. Blue
,✔ Correct Answer: C (C. Green) ✔
Green insulation is reserved for grounding conductors under NEC standards.
6. What is the allowable voltage drop recommendation for branch circuits?
A. 1%
B. 3%
C. 5%
D. 10%
✔ Correct Answer: B (B. 3%) ✔
NEC recommends 3% maximum voltage drop on branch circuits for efficiency.
7. A 10 AWG copper conductor is rated approximately for:
A. 15 A
B. 20 A
C. 30 A
D. 40 A
✔ Correct Answer: C (C. 30 A) ✔
10 AWG copper typically supports 30 amperes depending on insulation rating.
8. What is the function of a circuit breaker?
A. Increase voltage
B. Store electricity
C. Protect against overcurrent
D. Convert AC to DC
✔ Correct Answer: C (C. Protect against overcurrent) ✔
Circuit breakers automatically open when excessive current is detected.
, 9. A 1-phase transformer has a primary of 480V and secondary of 120V. What
is the turns ratio?
A. 2:1
B. 3:1
C. 4:1
D. 5:1
✔ Correct Answer: C (C. 4:1) ✔
480 ÷ 120 = 4, so the ratio is 4:1.
10.What is the purpose of a neutral conductor?
A. Carry fault current only
B. Carry unbalanced load current
C. Provide grounding path
D. Increase voltage
✔ Correct Answer: B (B. Carry unbalanced load current) ✔
Neutral carries return current under normal operation in single-phase systems.
11.Which device is required for spa and hot tub installations?
A. AFCI
B. GFCI
C. Disconnect switch only
D. Surge protector
✔ Correct Answer: B (B. GFCI) ✔
GFCI protection is required due to wet-location shock hazards.
12.What is the minimum burial depth for a residential branch circuit using PVC
conduit under a driveway?
Newest (2026 Update) Actual Practice
Questions – Set 100 Most Common
Exam Questions And Answers In Details
100% Verified Exam
1. A 120V branch circuit supplies lighting loads totaling 1,800 watts. What is
the approximate load current?
A. 10 A
B. 12 A
C. 15 A
D. 20 A
✔ Correct Answer: B (B. 15 A) ✔
Calculation: I = P ÷ V = 1800 ÷ 120 = 15 amps. This follows standard Ohm’s Law
power relationship used in load calculations.
2. According to NEC practice, what is the minimum number of 20A small
appliance branch circuits required in a kitchen?
A. 1
B. 2
C. 3
D. 4
,✔ Correct Answer: B (B. 2) ✔
Kitchen small appliance circuits require at least two 20A circuits for countertop
receptacles.
3. What is the primary purpose of a ground-fault circuit interrupter (GFCI)?
A. Prevent overloads
B. Prevent short circuits
C. Protect against shock hazards
D. Increase circuit capacity
✔ Correct Answer: C (C. Protect against shock hazards) ✔
GFCIs detect leakage current and quickly disconnect power to prevent electric
shock.
4. A 240V load draws 30 amps. What is the power in watts?
A. 4,800 W
B. 6,000 W
C. 7,200 W
D. 8,400 W
✔ Correct Answer: C (C. 7,200 W) ✔
P = V × I = 240 × 30 = 7,200 watts.
5. Which conductor is typically used as the equipment grounding conductor?
A. White
B. Red
C. Green
D. Blue
,✔ Correct Answer: C (C. Green) ✔
Green insulation is reserved for grounding conductors under NEC standards.
6. What is the allowable voltage drop recommendation for branch circuits?
A. 1%
B. 3%
C. 5%
D. 10%
✔ Correct Answer: B (B. 3%) ✔
NEC recommends 3% maximum voltage drop on branch circuits for efficiency.
7. A 10 AWG copper conductor is rated approximately for:
A. 15 A
B. 20 A
C. 30 A
D. 40 A
✔ Correct Answer: C (C. 30 A) ✔
10 AWG copper typically supports 30 amperes depending on insulation rating.
8. What is the function of a circuit breaker?
A. Increase voltage
B. Store electricity
C. Protect against overcurrent
D. Convert AC to DC
✔ Correct Answer: C (C. Protect against overcurrent) ✔
Circuit breakers automatically open when excessive current is detected.
, 9. A 1-phase transformer has a primary of 480V and secondary of 120V. What
is the turns ratio?
A. 2:1
B. 3:1
C. 4:1
D. 5:1
✔ Correct Answer: C (C. 4:1) ✔
480 ÷ 120 = 4, so the ratio is 4:1.
10.What is the purpose of a neutral conductor?
A. Carry fault current only
B. Carry unbalanced load current
C. Provide grounding path
D. Increase voltage
✔ Correct Answer: B (B. Carry unbalanced load current) ✔
Neutral carries return current under normal operation in single-phase systems.
11.Which device is required for spa and hot tub installations?
A. AFCI
B. GFCI
C. Disconnect switch only
D. Surge protector
✔ Correct Answer: B (B. GFCI) ✔
GFCI protection is required due to wet-location shock hazards.
12.What is the minimum burial depth for a residential branch circuit using PVC
conduit under a driveway?
