1. What is the primary responsibility of an Electrical Plans Examiner?
A. Installing electrical systems
B. Reviewing electrical plans for code compliance
C. Performing field inspections only
D. Approving utility connections
ANSWER : B
Explanation: The examiner reviews submitted plans to ensure compliance with
adopted electrical codes before permits are issued.
2. Which code is most commonly used for electrical plan review in the U.S.?
A. IPC
B. NEC (NFPA 70)
C. IBC Chapter 16 only
D. ASHRAE 90.1
ANSWER : B
Explanation: The NEC (NFPA 70) governs electrical design, installation, and
safety.
3. What NEC article covers general requirements for wiring methods?
A. Article 90
B. Article 110
C. Article 300
D. Article 250
ANSWER : C
Explanation: Article 300 addresses general wiring methods and requirements.
,4. What is the purpose of electrical load calculations?
A. Reduce material cost
B. Determine conductor and equipment sizing
C. Increase voltage
D. Avoid inspections
ANSWER : B
Explanation: Load calculations ensure conductors and equipment are properly
sized to safely handle expected loads.
5. Which NEC article covers grounding and bonding?
A. 210
B. 215
C. 240
D. 250
ANSWER : D
Explanation: Article 250 governs grounding and bonding requirements.
6. A plans examiner should reject plans missing which of the following?
A. Contractor phone number
B. Panel schedules
C. Jobsite photos
D. Invoice copies
ANSWER : B
Explanation: Panel schedules are essential for verifying loads, breaker sizing,
and circuit distribution.
7. What is the minimum working clearance in front of electrical panels
(≤600V)?
A. 24 inches
B. 30 inches
,C. 36 inches
D. 42 inches
ANSWER : C
Explanation: NEC 110.26 requires 36 inches of working clearance.
8. Which system is required to be grounded?
A. All DC systems
B. Separately derived systems
C. Class 2 systems
D. Temporary wiring
ANSWER : B
Explanation: Separately derived systems must be grounded per NEC 250.
9. What NEC article covers branch circuits?
A. 210
B. 215
C. 220
D. 225
ANSWER : A
Explanation: Article 210 governs branch circuits.
10. What is the maximum allowable overcurrent protection for #12 copper
conductors?
A. 15 amps
B. 20 amps
C. 25 amps
D. 30 amps
ANSWER : B
Explanation: NEC Table 310.16 allows #12 copper at 20 amps.
, 11. What must be shown on electrical plans for commercial buildings?
A. Paint colors
B. Furniture layout only
C. Load calculations
D. Contractor license number
ANSWER : C
Explanation: Load calculations are required to verify system capacity.
12. What NEC article addresses overcurrent protection?
A. 230
B. 240
C. 250
D. 300
ANSWER : B
Explanation: Article 240 covers overcurrent protection.
13. Which fault condition does GFCI protection address?
A. Overload
B. Short circuit
C. Ground fault
D. Arc fault
ANSWER : C
Explanation: GFCIs protect against ground faults to reduce shock hazards.
14. Where is GFCI protection required?
A. Living rooms
B. Bedrooms
C. Bathrooms
D. Hallways
ANSWER : C
Explanation: NEC 210.8 requires GFCI protection in bathrooms.
A. Installing electrical systems
B. Reviewing electrical plans for code compliance
C. Performing field inspections only
D. Approving utility connections
ANSWER : B
Explanation: The examiner reviews submitted plans to ensure compliance with
adopted electrical codes before permits are issued.
2. Which code is most commonly used for electrical plan review in the U.S.?
A. IPC
B. NEC (NFPA 70)
C. IBC Chapter 16 only
D. ASHRAE 90.1
ANSWER : B
Explanation: The NEC (NFPA 70) governs electrical design, installation, and
safety.
3. What NEC article covers general requirements for wiring methods?
A. Article 90
B. Article 110
C. Article 300
D. Article 250
ANSWER : C
Explanation: Article 300 addresses general wiring methods and requirements.
,4. What is the purpose of electrical load calculations?
A. Reduce material cost
B. Determine conductor and equipment sizing
C. Increase voltage
D. Avoid inspections
ANSWER : B
Explanation: Load calculations ensure conductors and equipment are properly
sized to safely handle expected loads.
5. Which NEC article covers grounding and bonding?
A. 210
B. 215
C. 240
D. 250
ANSWER : D
Explanation: Article 250 governs grounding and bonding requirements.
6. A plans examiner should reject plans missing which of the following?
A. Contractor phone number
B. Panel schedules
C. Jobsite photos
D. Invoice copies
ANSWER : B
Explanation: Panel schedules are essential for verifying loads, breaker sizing,
and circuit distribution.
7. What is the minimum working clearance in front of electrical panels
(≤600V)?
A. 24 inches
B. 30 inches
,C. 36 inches
D. 42 inches
ANSWER : C
Explanation: NEC 110.26 requires 36 inches of working clearance.
8. Which system is required to be grounded?
A. All DC systems
B. Separately derived systems
C. Class 2 systems
D. Temporary wiring
ANSWER : B
Explanation: Separately derived systems must be grounded per NEC 250.
9. What NEC article covers branch circuits?
A. 210
B. 215
C. 220
D. 225
ANSWER : A
Explanation: Article 210 governs branch circuits.
10. What is the maximum allowable overcurrent protection for #12 copper
conductors?
A. 15 amps
B. 20 amps
C. 25 amps
D. 30 amps
ANSWER : B
Explanation: NEC Table 310.16 allows #12 copper at 20 amps.
, 11. What must be shown on electrical plans for commercial buildings?
A. Paint colors
B. Furniture layout only
C. Load calculations
D. Contractor license number
ANSWER : C
Explanation: Load calculations are required to verify system capacity.
12. What NEC article addresses overcurrent protection?
A. 230
B. 240
C. 250
D. 300
ANSWER : B
Explanation: Article 240 covers overcurrent protection.
13. Which fault condition does GFCI protection address?
A. Overload
B. Short circuit
C. Ground fault
D. Arc fault
ANSWER : C
Explanation: GFCIs protect against ground faults to reduce shock hazards.
14. Where is GFCI protection required?
A. Living rooms
B. Bedrooms
C. Bathrooms
D. Hallways
ANSWER : C
Explanation: NEC 210.8 requires GFCI protection in bathrooms.
