Electrical Plans Examiner Exam
Questions And Correct
Answers (Verified Answers)
Plus Rationales 2025/2026
Q&A | Instant Download Pdf
1. What is the primary purpose of an electrical plan review?
A. To install electrical systems
B. To approve contractor payments
C. To verify code compliance before construction
D. To design electrical systems
Rationale: Plans examiners ensure drawings comply with adopted
electrical codes before work begins.
2. Which code is most commonly used for electrical plan review in
the U.S.?
A. International Plumbing Code
B. OSHA
C. National Electrical Code (NEC)
D. NFPA 58
Rationale: The NEC is the primary standard for electrical installations.
3. What is typically required on a commercial electrical site plan?
,A. Paint colors
B. Furniture layout
C. Service location and equipment placement
D. Employee schedules
Rationale: Site plans show electrical service and equipment locations.
4. Minimum clearance around electrical equipment is governed by:
A. ANSI Z87
B. NEC 110.26
C. NEC 210.52
D. OSHA 1926
Rationale: NEC 110.26 covers working space requirements.
5. What is the purpose of a single-line diagram?
A. Show plumbing layout
B. Show HVAC routing
C. Simplify electrical distribution representation
D. Show lighting fixture types only
Rationale: Single-line diagrams simplify power distribution systems.
6. Which document defines load calculations?
A. Site plan
B. NEC Article 220
C. NEC Article 430
D. IFC Chapter 9
Rationale: Article 220 governs branch and feeder load calculations.
7. What must be included in a panel schedule?
, A. Employee names
B. Paint specifications
C. Circuit loads and breaker ratings
D. Plumbing connections
Rationale: Panel schedules show circuit distribution.
8. What is the standard voltage for residential single-family
dwellings in the U.S.?
A. 120V only
B. 480V
C. 120/240V single-phase
D. 277/480V three-phase
Rationale: Most homes use 120/240V split-phase systems.
9. What does NEC Article 310 cover?
A. Grounding
B. Motors
C. Conductors for general wiring
D. Transformers
Rationale: Article 310 covers conductor ampacity and insulation.
10. What is required for all electrical equipment installations?
A. Color coding
B. Approval from utility only
C. Listing and labeling by an approved agency
D. Fire department approval only
Rationale: NEC requires listed and labeled equipment.
11. What is the purpose of load diversity?
Questions And Correct
Answers (Verified Answers)
Plus Rationales 2025/2026
Q&A | Instant Download Pdf
1. What is the primary purpose of an electrical plan review?
A. To install electrical systems
B. To approve contractor payments
C. To verify code compliance before construction
D. To design electrical systems
Rationale: Plans examiners ensure drawings comply with adopted
electrical codes before work begins.
2. Which code is most commonly used for electrical plan review in
the U.S.?
A. International Plumbing Code
B. OSHA
C. National Electrical Code (NEC)
D. NFPA 58
Rationale: The NEC is the primary standard for electrical installations.
3. What is typically required on a commercial electrical site plan?
,A. Paint colors
B. Furniture layout
C. Service location and equipment placement
D. Employee schedules
Rationale: Site plans show electrical service and equipment locations.
4. Minimum clearance around electrical equipment is governed by:
A. ANSI Z87
B. NEC 110.26
C. NEC 210.52
D. OSHA 1926
Rationale: NEC 110.26 covers working space requirements.
5. What is the purpose of a single-line diagram?
A. Show plumbing layout
B. Show HVAC routing
C. Simplify electrical distribution representation
D. Show lighting fixture types only
Rationale: Single-line diagrams simplify power distribution systems.
6. Which document defines load calculations?
A. Site plan
B. NEC Article 220
C. NEC Article 430
D. IFC Chapter 9
Rationale: Article 220 governs branch and feeder load calculations.
7. What must be included in a panel schedule?
, A. Employee names
B. Paint specifications
C. Circuit loads and breaker ratings
D. Plumbing connections
Rationale: Panel schedules show circuit distribution.
8. What is the standard voltage for residential single-family
dwellings in the U.S.?
A. 120V only
B. 480V
C. 120/240V single-phase
D. 277/480V three-phase
Rationale: Most homes use 120/240V split-phase systems.
9. What does NEC Article 310 cover?
A. Grounding
B. Motors
C. Conductors for general wiring
D. Transformers
Rationale: Article 310 covers conductor ampacity and insulation.
10. What is required for all electrical equipment installations?
A. Color coding
B. Approval from utility only
C. Listing and labeling by an approved agency
D. Fire department approval only
Rationale: NEC requires listed and labeled equipment.
11. What is the purpose of load diversity?
