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ICC Commercial Electrical Inspector Exam (E2)
Exam LATEST ALL 300 QUESTIONS WITH CORRECT
SOLUTIONS AND RATIONALES JUST RELEASED
Q1. What is the primary purpose of the National Electrical Code (NEC)?
A) To design electrical systems for maximum efficiency
B) To provide minimum installation standards for safety
C) To certify electrical contractors
D) To calculate electrical utility bills
Answer: B) To provide minimum installation standards for safety. The NEC provides minimum
safety standards for electrical installations to protect people and property from electrical
hazards. It is not a design manual but a safety code .
Q2. Which NEC article covers general requirements for grounding and bonding?
A) Article 240
B) Article 250
C) Article 300
D) Article 310
Answer: B) Article 250. Article 250 governs grounding and bonding requirements in electrical
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systems, including system grounding, equipment grounding, and bonding of conductive
materials .
Q3. The term "Accessible" as defined in NEC Article 100 means:
A) Capable of being reached quickly without tools
B) Capable of being reached for operation, maintenance, or inspection, requiring the removal of
non-permanent obstacles
C) Capable of being reached with a ladder
D) Capable of being reached only by qualified persons
Answer: B) Capable of being reached for operation, maintenance, or inspection, requiring the
removal of non-permanent obstacles. NEC Article 100 defines accessible as capable of being
reached for operation, maintenance, or inspection, including the removal of non-permanent
obstacles .
Q4. What is the minimum working space required in front of electrical equipment rated 0-150
volts to ground with exposed live parts on one side and no live parts on the opposite side?
A) 2 ft
B) 2.5 ft
C) 3 ft
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D) 3.5 ft
Answer: C) 3 ft. NEC Table 110.26(A)(1) requires 3 ft of working space for equipment 0-150 volts
to ground with exposed live parts on one side and no live parts on the opposite side .
Q5. Which of the following is NOT an enforceable part of the NEC?
A) Mandatory rules using the word "shall"
B) Permissive rules using the word "shall be permitted"
C) Explanatory material in the form of Fine Print Notes (FPN)
D) Exceptions to rules
Answer: C) Explanatory material in the form of Fine Print Notes (FPN). Fine Print Notes (now
called Informational Notes) are not enforceable; they provide explanatory material only.
Mandatory and permissive rules using "shall" or "shall be permitted" are enforceable .
Q6. A commercial office building has a floor area of 5,000 sq ft. Using the standard general
lighting load, what is the minimum general lighting load in VA?
A) 10,000 VA
B) 12,500 VA
C) 15,000 VA
D) 17,500 VA
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Answer: C) 15,000 VA. NEC Table 220.12 requires 3 VA per sq ft for commercial buildings; 5,000
× 3 = 15,000 VA .
Q7. During an inspection, you find the working space in front of a panelboard is 30 inches
wide. What is the violation?
A) No violation – 30 inches meets minimum
B) Working space width must be at least 36 inches
C) Working space width must be at least 48 inches
D) Working space is not required for panelboards
Answer: A) No violation – 30 inches meets minimum. NEC 110.26(A)(1) requires working space
width to be at least 30 inches or the width of the equipment, whichever is greater .
Q8. A 200-amp commercial service has a grounding electrode conductor connecting to a
ground rod. What is the minimum size copper GEC required?
A) 6 AWG
B) 8 AWG
C) 4 AWG
D) 2 AWG
ICC Commercial Electrical Inspector Exam (E2)
Exam LATEST ALL 300 QUESTIONS WITH CORRECT
SOLUTIONS AND RATIONALES JUST RELEASED
Q1. What is the primary purpose of the National Electrical Code (NEC)?
A) To design electrical systems for maximum efficiency
B) To provide minimum installation standards for safety
C) To certify electrical contractors
D) To calculate electrical utility bills
Answer: B) To provide minimum installation standards for safety. The NEC provides minimum
safety standards for electrical installations to protect people and property from electrical
hazards. It is not a design manual but a safety code .
Q2. Which NEC article covers general requirements for grounding and bonding?
A) Article 240
B) Article 250
C) Article 300
D) Article 310
Answer: B) Article 250. Article 250 governs grounding and bonding requirements in electrical
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systems, including system grounding, equipment grounding, and bonding of conductive
materials .
Q3. The term "Accessible" as defined in NEC Article 100 means:
A) Capable of being reached quickly without tools
B) Capable of being reached for operation, maintenance, or inspection, requiring the removal of
non-permanent obstacles
C) Capable of being reached with a ladder
D) Capable of being reached only by qualified persons
Answer: B) Capable of being reached for operation, maintenance, or inspection, requiring the
removal of non-permanent obstacles. NEC Article 100 defines accessible as capable of being
reached for operation, maintenance, or inspection, including the removal of non-permanent
obstacles .
Q4. What is the minimum working space required in front of electrical equipment rated 0-150
volts to ground with exposed live parts on one side and no live parts on the opposite side?
A) 2 ft
B) 2.5 ft
C) 3 ft
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D) 3.5 ft
Answer: C) 3 ft. NEC Table 110.26(A)(1) requires 3 ft of working space for equipment 0-150 volts
to ground with exposed live parts on one side and no live parts on the opposite side .
Q5. Which of the following is NOT an enforceable part of the NEC?
A) Mandatory rules using the word "shall"
B) Permissive rules using the word "shall be permitted"
C) Explanatory material in the form of Fine Print Notes (FPN)
D) Exceptions to rules
Answer: C) Explanatory material in the form of Fine Print Notes (FPN). Fine Print Notes (now
called Informational Notes) are not enforceable; they provide explanatory material only.
Mandatory and permissive rules using "shall" or "shall be permitted" are enforceable .
Q6. A commercial office building has a floor area of 5,000 sq ft. Using the standard general
lighting load, what is the minimum general lighting load in VA?
A) 10,000 VA
B) 12,500 VA
C) 15,000 VA
D) 17,500 VA
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Answer: C) 15,000 VA. NEC Table 220.12 requires 3 VA per sq ft for commercial buildings; 5,000
× 3 = 15,000 VA .
Q7. During an inspection, you find the working space in front of a panelboard is 30 inches
wide. What is the violation?
A) No violation – 30 inches meets minimum
B) Working space width must be at least 36 inches
C) Working space width must be at least 48 inches
D) Working space is not required for panelboards
Answer: A) No violation – 30 inches meets minimum. NEC 110.26(A)(1) requires working space
width to be at least 30 inches or the width of the equipment, whichever is greater .
Q8. A 200-amp commercial service has a grounding electrode conductor connecting to a
ground rod. What is the minimum size copper GEC required?
A) 6 AWG
B) 8 AWG
C) 4 AWG
D) 2 AWG
