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Texas Journeyman Electrician Licensing
Exam – Questions And Correct Answers
(Verified Answers) Plus Rationales
/2026 Q&A | Instant Download Pdf
1. What is the minimum burial depth for nonmetallic-sheathed cable (Type NM)
installed underground?
A. 6 inches
B. 12 inches
C. 24 inches
D. 36 inches
The NEC requires a minimum burial depth of 24 inches for direct-buried cables
such as NM, unless otherwise protected by conduit or allowed exceptions.
2. What is the maximum number of conductors allowed in a ¾-inch EMT
conduit, size 12 AWG THHN, without exceeding fill capacity?
A. 8
B. 16
C. 12
D. 20
According to NEC Chapter 9, Table 1, conduit fill must not exceed 40%. For ¾-inch
EMT and 12 AWG THHN, 16 conductors is the maximum permissible.
,3. Which of the following must be grounded?
A. Nonmetallic boxes
B. Metal boxes
C. Type NM cable sheathing
D. Wood framing
All metal enclosures must be grounded to ensure fault current has a low-
impedance path back to the source, per NEC 250.
4. The color white or gray insulation is typically used for which conductor?
A. Grounding conductor
B. Neutral conductor
C. Hot conductor
D. Traveler conductor
White or gray indicates grounded (neutral) conductors, per NEC 200.6.
5. What is the standard voltage drop limit recommended for branch circuits to
maintain efficiency?
A. 1%
B. 3%
C. 5% (3% branch + 2% feeder)
D. 10%
The NEC Informational Note suggests a maximum of 3% voltage drop on branch
circuits and 5% total on feeders plus branch circuits for efficiency.
6. What is the ampacity of 12 AWG copper conductors with THHN insulation at
90°C?
A. 15 amps
B. 30 amps
, C. 20 amps
D. 25 amps
Per NEC 310.16, 12 AWG THHN at 90°C has an ampacity of 30A, though
commonly limited to 20A due to overcurrent device rules (NEC 240.4).
7. GFCI protection is required for receptacles located in which area?
A. Bedrooms
B. Bathrooms
C. Living rooms
D. Attics
NEC 210.8 requires GFCI protection for receptacles in bathrooms, kitchens,
garages, outdoor areas, and other specified locations.
8. A multiwire branch circuit must have what in common?
A. Separate neutral conductors
B. A common disconnecting means
C. Different phases
D. Separate raceways
Multiwire branch circuits require simultaneous disconnection of ungrounded
conductors, per NEC 210.4(B).
9. What type of conduit is permitted for direct burial without additional
protection?
A. EMT
B. FMC
C. PVC (Schedule 80)
D. IMC
Schedule 80 PVC is rated for direct burial and provides protection against
damage, per NEC 352.
Texas Journeyman Electrician Licensing
Exam – Questions And Correct Answers
(Verified Answers) Plus Rationales
/2026 Q&A | Instant Download Pdf
1. What is the minimum burial depth for nonmetallic-sheathed cable (Type NM)
installed underground?
A. 6 inches
B. 12 inches
C. 24 inches
D. 36 inches
The NEC requires a minimum burial depth of 24 inches for direct-buried cables
such as NM, unless otherwise protected by conduit or allowed exceptions.
2. What is the maximum number of conductors allowed in a ¾-inch EMT
conduit, size 12 AWG THHN, without exceeding fill capacity?
A. 8
B. 16
C. 12
D. 20
According to NEC Chapter 9, Table 1, conduit fill must not exceed 40%. For ¾-inch
EMT and 12 AWG THHN, 16 conductors is the maximum permissible.
,3. Which of the following must be grounded?
A. Nonmetallic boxes
B. Metal boxes
C. Type NM cable sheathing
D. Wood framing
All metal enclosures must be grounded to ensure fault current has a low-
impedance path back to the source, per NEC 250.
4. The color white or gray insulation is typically used for which conductor?
A. Grounding conductor
B. Neutral conductor
C. Hot conductor
D. Traveler conductor
White or gray indicates grounded (neutral) conductors, per NEC 200.6.
5. What is the standard voltage drop limit recommended for branch circuits to
maintain efficiency?
A. 1%
B. 3%
C. 5% (3% branch + 2% feeder)
D. 10%
The NEC Informational Note suggests a maximum of 3% voltage drop on branch
circuits and 5% total on feeders plus branch circuits for efficiency.
6. What is the ampacity of 12 AWG copper conductors with THHN insulation at
90°C?
A. 15 amps
B. 30 amps
, C. 20 amps
D. 25 amps
Per NEC 310.16, 12 AWG THHN at 90°C has an ampacity of 30A, though
commonly limited to 20A due to overcurrent device rules (NEC 240.4).
7. GFCI protection is required for receptacles located in which area?
A. Bedrooms
B. Bathrooms
C. Living rooms
D. Attics
NEC 210.8 requires GFCI protection for receptacles in bathrooms, kitchens,
garages, outdoor areas, and other specified locations.
8. A multiwire branch circuit must have what in common?
A. Separate neutral conductors
B. A common disconnecting means
C. Different phases
D. Separate raceways
Multiwire branch circuits require simultaneous disconnection of ungrounded
conductors, per NEC 210.4(B).
9. What type of conduit is permitted for direct burial without additional
protection?
A. EMT
B. FMC
C. PVC (Schedule 80)
D. IMC
Schedule 80 PVC is rated for direct burial and provides protection against
damage, per NEC 352.
