1|P age
TEXAS JOURNEYMAN ELECTRICIAN LICENSING
EXAM ACTUAL PREP QUESTIONS AND WELL
REVISED ANSWERS - LATEST AND COMPLETE
UPDATE WITH VERIFIED SOLUTIONS
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
¾inch 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
,2|P age
D. Wood framing
All metal enclosures must be grounded to ensure fault current has a
lowimpedance 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
,3|P age
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.
, 4|P age
10. Which NEC article covers branch circuits?
A. Article 200
B. Article 210
C. Article 220
D. Article 240
Branch circuits are covered under NEC Article 210.
11. What is the maximum distance that NM cable must be secured
within a box or enclosure?
A. 4 inches
B. 6 inches
C. 8 inches
D. 12 inches
NEC 334.30 requires nonmetallic-sheathed cable (NM) to be secured
within 8 inches of every box, cabinet, or fitting.
12. What size copper equipment grounding conductor is required
for a 60- amp circuit?
A. 12 AWG
B. 10 AWG
C. 10 AWG
D. 8 AWG
Per NEC 250.122, a 60A circuit requires a minimum 10 AWG copper
grounding conductor.
TEXAS JOURNEYMAN ELECTRICIAN LICENSING
EXAM ACTUAL PREP QUESTIONS AND WELL
REVISED ANSWERS - LATEST AND COMPLETE
UPDATE WITH VERIFIED SOLUTIONS
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
¾inch 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
,2|P age
D. Wood framing
All metal enclosures must be grounded to ensure fault current has a
lowimpedance 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
,3|P age
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.
, 4|P age
10. Which NEC article covers branch circuits?
A. Article 200
B. Article 210
C. Article 220
D. Article 240
Branch circuits are covered under NEC Article 210.
11. What is the maximum distance that NM cable must be secured
within a box or enclosure?
A. 4 inches
B. 6 inches
C. 8 inches
D. 12 inches
NEC 334.30 requires nonmetallic-sheathed cable (NM) to be secured
within 8 inches of every box, cabinet, or fitting.
12. What size copper equipment grounding conductor is required
for a 60- amp circuit?
A. 12 AWG
B. 10 AWG
C. 10 AWG
D. 8 AWG
Per NEC 250.122, a 60A circuit requires a minimum 10 AWG copper
grounding conductor.
