Louisiana Electrical Contractor Examination
Comprehensive Practice Examination (2026
Edition) | Latest Electrical Licensing
Standards | High-Difficulty Multiple-Choice
Questions | Verified Answers with Detailed
Rationales | NEC & Louisiana Code-Based
Concepts
Question 1
A branch circuit supplying continuous lighting loads has a
calculated continuous load of 24 amperes. What is the minimum
ampere rating of the overcurrent protective device?
A. 25 A
B. 30 A
C. 35 A
D. 40 A
Answer: B. 30 A
Rationale: NEC requires branch-circuit overcurrent devices
supplying continuous loads to be rated at not less than 125% of
the continuous load. 24 × 1.25 = 30 amperes.
, Question 2
According to the NEC, what is the primary purpose of
equipment grounding conductors?
A. Carry normal load current
B. Increase circuit voltage
C. Provide a low-impedance fault current path
D. Prevent voltage drop
Answer: C. Provide a low-impedance fault current path
Rationale: Equipment grounding conductors safely carry fault
current back to the source, allowing overcurrent devices to open
quickly and reduce shock and fire hazards.
Question 3
Which conductor insulation type is most commonly permitted
for dry and damp locations but not wet locations unless
specifically listed?
A. XHHW
B. THWN
C. THHN
D. USE-2
Answer: C. THHN
Rationale: THHN insulation is generally rated for dry and damp
locations. Wet locations typically require THWN or dual-rated
THHN/THWN conductors.
Comprehensive Practice Examination (2026
Edition) | Latest Electrical Licensing
Standards | High-Difficulty Multiple-Choice
Questions | Verified Answers with Detailed
Rationales | NEC & Louisiana Code-Based
Concepts
Question 1
A branch circuit supplying continuous lighting loads has a
calculated continuous load of 24 amperes. What is the minimum
ampere rating of the overcurrent protective device?
A. 25 A
B. 30 A
C. 35 A
D. 40 A
Answer: B. 30 A
Rationale: NEC requires branch-circuit overcurrent devices
supplying continuous loads to be rated at not less than 125% of
the continuous load. 24 × 1.25 = 30 amperes.
, Question 2
According to the NEC, what is the primary purpose of
equipment grounding conductors?
A. Carry normal load current
B. Increase circuit voltage
C. Provide a low-impedance fault current path
D. Prevent voltage drop
Answer: C. Provide a low-impedance fault current path
Rationale: Equipment grounding conductors safely carry fault
current back to the source, allowing overcurrent devices to open
quickly and reduce shock and fire hazards.
Question 3
Which conductor insulation type is most commonly permitted
for dry and damp locations but not wet locations unless
specifically listed?
A. XHHW
B. THWN
C. THHN
D. USE-2
Answer: C. THHN
Rationale: THHN insulation is generally rated for dry and damp
locations. Wet locations typically require THWN or dual-rated
THHN/THWN conductors.
