Page 1 of 135
ELECTRICAL CONTRACTOR 2026/2027
EXAM REAL QUESTIONS WITH WELL
ELABORATED ANSWERS (100% CORRECT
VERIFIED SOLUTIONS) LATEST UPDATED
VERSION GUARANTEED PASS A+
Q1. The NEC is revised on a cycle of every:
A) 1 year
B) 2 years
C) 3 years
D) 5 years
Answer: C – 3 years. NEC 2023 is the current adopted
edition in Arizona (with amendments).
,Page 2 of 135
Q2. A dwelling unit living room requires AFCI protection for
120V, 15A circuits. This is found in:
A) 210.8
B) 210.12
C) 210.52
D) 210.70
Answer: B – 210.12(A) lists rooms requiring AFCI.
Q3. The minimum ambient temperature correction factor for
THHN insulation used in an attic that reaches 140°F (60°C) is:
A) 0.82
B) 0.88
C) 0.75
D) 0.71
Answer: D – Table 310.16 correction factors for 90°C
conductor at 60°C ambient = 0.71.
Q4. NM cable (Romex) is permitted in what type of
commercial building?
,Page 3 of 135
A) Any building
B) Only dwellings
C) Types III, IV, V buildings up to 3 stories
D) Only one-family dwellings
Answer: C – NEC 334.10 allows NM in Type III, IV, V
buildings up to 3 stories.
Q5. A receptacle installed in a bathroom must be located
within ____ of the outside edge of the sink basin.
A) 3 ft
B) 4 ft
C) 6 ft
D) No distance requirement
Answer: D – NEC 210.52(D) requires at least one receptacle
within 3 ft of the basin, but not a maximum.
Q6. What is the minimum bending radius for a 1" diameter
metal-clad cable?
A) 5"
, Page 4 of 135
B) 7"
C) 10"
D) 12"
Answer: C – NEC 330.24: minimum bending radius = 10 ×
diameter for MC cable (10").
Q7. A switch controlling a lighting load must be located such
that it is not in a:
A) Damp location
B) Tub or shower space (within reach)
C) Garage
D) Utility room
Answer: B – NEC 404.4 prohibits switches in tub or shower
spaces unless part of a listed assembly.
Q8. What is the maximum voltage drop recommended by the
NEC for a branch circuit?
A) 1%
B) 2%
ELECTRICAL CONTRACTOR 2026/2027
EXAM REAL QUESTIONS WITH WELL
ELABORATED ANSWERS (100% CORRECT
VERIFIED SOLUTIONS) LATEST UPDATED
VERSION GUARANTEED PASS A+
Q1. The NEC is revised on a cycle of every:
A) 1 year
B) 2 years
C) 3 years
D) 5 years
Answer: C – 3 years. NEC 2023 is the current adopted
edition in Arizona (with amendments).
,Page 2 of 135
Q2. A dwelling unit living room requires AFCI protection for
120V, 15A circuits. This is found in:
A) 210.8
B) 210.12
C) 210.52
D) 210.70
Answer: B – 210.12(A) lists rooms requiring AFCI.
Q3. The minimum ambient temperature correction factor for
THHN insulation used in an attic that reaches 140°F (60°C) is:
A) 0.82
B) 0.88
C) 0.75
D) 0.71
Answer: D – Table 310.16 correction factors for 90°C
conductor at 60°C ambient = 0.71.
Q4. NM cable (Romex) is permitted in what type of
commercial building?
,Page 3 of 135
A) Any building
B) Only dwellings
C) Types III, IV, V buildings up to 3 stories
D) Only one-family dwellings
Answer: C – NEC 334.10 allows NM in Type III, IV, V
buildings up to 3 stories.
Q5. A receptacle installed in a bathroom must be located
within ____ of the outside edge of the sink basin.
A) 3 ft
B) 4 ft
C) 6 ft
D) No distance requirement
Answer: D – NEC 210.52(D) requires at least one receptacle
within 3 ft of the basin, but not a maximum.
Q6. What is the minimum bending radius for a 1" diameter
metal-clad cable?
A) 5"
, Page 4 of 135
B) 7"
C) 10"
D) 12"
Answer: C – NEC 330.24: minimum bending radius = 10 ×
diameter for MC cable (10").
Q7. A switch controlling a lighting load must be located such
that it is not in a:
A) Damp location
B) Tub or shower space (within reach)
C) Garage
D) Utility room
Answer: B – NEC 404.4 prohibits switches in tub or shower
spaces unless part of a listed assembly.
Q8. What is the maximum voltage drop recommended by the
NEC for a branch circuit?
A) 1%
B) 2%
