TEXAS ELECTRICAL CONTRACTOR
LICENSING EXAM ACTUAL 2026 VERIFIED
QUESTIONS WITH ANSWERS
COMPREHENSIVE & RATIONALE|INSTANT
DOWNLOAD
1. A licensed electrical contractor in Texas is primarily responsible
for which of the following?
A. Inspecting all electrical installations for the state
B. Ensuring electrical work complies with applicable laws, codes, and
permit requirements while supervising electrical work performed under
the license
C. Manufacturing electrical equipment for commercial use
D. Certifying architects' electrical drawings
Answer: B
Rationale: Texas electrical contractors are responsible for ensuring
electrical work complies with applicable statutes, adopted electrical
codes, licensing regulations, permitting requirements, and safe
installation practices. They are accountable for work performed under
their license and must properly supervise electrical activities.
2. Why is overcurrent protection installed in electrical systems?
A. To increase conductor ampacity
B. To protect conductors and equipment from excessive current caused
by overloads and short circuits
C. To improve lighting efficiency only
D. To reduce grounding resistance
Answer: B
1
,Rationale: Overcurrent protective devices such as circuit breakers and
fuses prevent conductor overheating and equipment damage by
interrupting excessive current during overload or fault conditions.
3. Which conductor normally carries current during standard
operation in a single-phase 120/240-volt system?
A. Equipment grounding conductor
B. Grounding electrode conductor
C. Neutral and ungrounded conductors depending on circuit operation
D. Metal conduit only
Answer: C
Rationale: The ungrounded (hot) conductors always carry load current,
while the grounded (neutral) conductor carries return current for line-
to-neutral loads. Equipment grounding conductors should not carry
current under normal operating conditions.
4. What is the primary purpose of bonding?
A. Reduce utility bills
B. Electrically connect conductive parts together to establish an effective
fault-current path
C. Increase conductor insulation resistance
D. Prevent voltage drop
Answer: B
Rationale: Bonding ensures conductive components remain at the same
electrical potential and provides a low-impedance path for fault current,
allowing protective devices to operate rapidly.
2
, 5. A 20-ampere branch circuit supplying continuous loads should
generally not exceed what continuous load?
A. 20 amperes
B. 18 amperes
C. 16 amperes
D. 12 amperes
Answer: C
Rationale: Continuous loads are generally limited to 80% of circuit
rating unless equipment is listed for 100% operation. Eighty percent of
20 amperes equals 16 amperes.
6. Which conductor insulation type is commonly rated for 90°C in
dry and wet locations?
A. TW
B. THHN/THWN-2
C. UF only
D. SEU only
Answer: B
Rationale: THHN/THWN-2 conductors are among the most commonly
used building wires and are rated for 90°C in both dry and wet
environments when marked THWN-2.
7. What is voltage drop primarily caused by?
A. Excessive grounding electrodes
B. Resistance within conductors carrying current
C. Circuit breakers operating normally
D. Increased insulation thickness
3
, Answer: B
Rationale: Voltage drop results from conductor resistance and current
flow. Excessive voltage drop reduces equipment performance and
efficiency.
8. Which wiring method provides excellent mechanical protection in
commercial construction?
A. Lamp cord
B. Flexible extension cord
C. Electrical metallic tubing (EMT) installed according to code
D. Speaker wire
Answer: C
Rationale: EMT provides physical protection for conductors, serves as
an equipment grounding path when properly installed, and is widely
used in commercial occupancies.
9. What is the function of a transformer?
A. Increase current without changing voltage
B. Transfer electrical energy between circuits through electromagnetic
induction
C. Produce electricity chemically
D. Store electrical power indefinitely
Answer: B
Rationale: Transformers change voltage and current relationships
through electromagnetic induction while maintaining approximately
equal power minus losses.
4
LICENSING EXAM ACTUAL 2026 VERIFIED
QUESTIONS WITH ANSWERS
COMPREHENSIVE & RATIONALE|INSTANT
DOWNLOAD
1. A licensed electrical contractor in Texas is primarily responsible
for which of the following?
A. Inspecting all electrical installations for the state
B. Ensuring electrical work complies with applicable laws, codes, and
permit requirements while supervising electrical work performed under
the license
C. Manufacturing electrical equipment for commercial use
D. Certifying architects' electrical drawings
Answer: B
Rationale: Texas electrical contractors are responsible for ensuring
electrical work complies with applicable statutes, adopted electrical
codes, licensing regulations, permitting requirements, and safe
installation practices. They are accountable for work performed under
their license and must properly supervise electrical activities.
2. Why is overcurrent protection installed in electrical systems?
A. To increase conductor ampacity
B. To protect conductors and equipment from excessive current caused
by overloads and short circuits
C. To improve lighting efficiency only
D. To reduce grounding resistance
Answer: B
1
,Rationale: Overcurrent protective devices such as circuit breakers and
fuses prevent conductor overheating and equipment damage by
interrupting excessive current during overload or fault conditions.
3. Which conductor normally carries current during standard
operation in a single-phase 120/240-volt system?
A. Equipment grounding conductor
B. Grounding electrode conductor
C. Neutral and ungrounded conductors depending on circuit operation
D. Metal conduit only
Answer: C
Rationale: The ungrounded (hot) conductors always carry load current,
while the grounded (neutral) conductor carries return current for line-
to-neutral loads. Equipment grounding conductors should not carry
current under normal operating conditions.
4. What is the primary purpose of bonding?
A. Reduce utility bills
B. Electrically connect conductive parts together to establish an effective
fault-current path
C. Increase conductor insulation resistance
D. Prevent voltage drop
Answer: B
Rationale: Bonding ensures conductive components remain at the same
electrical potential and provides a low-impedance path for fault current,
allowing protective devices to operate rapidly.
2
, 5. A 20-ampere branch circuit supplying continuous loads should
generally not exceed what continuous load?
A. 20 amperes
B. 18 amperes
C. 16 amperes
D. 12 amperes
Answer: C
Rationale: Continuous loads are generally limited to 80% of circuit
rating unless equipment is listed for 100% operation. Eighty percent of
20 amperes equals 16 amperes.
6. Which conductor insulation type is commonly rated for 90°C in
dry and wet locations?
A. TW
B. THHN/THWN-2
C. UF only
D. SEU only
Answer: B
Rationale: THHN/THWN-2 conductors are among the most commonly
used building wires and are rated for 90°C in both dry and wet
environments when marked THWN-2.
7. What is voltage drop primarily caused by?
A. Excessive grounding electrodes
B. Resistance within conductors carrying current
C. Circuit breakers operating normally
D. Increased insulation thickness
3
, Answer: B
Rationale: Voltage drop results from conductor resistance and current
flow. Excessive voltage drop reduces equipment performance and
efficiency.
8. Which wiring method provides excellent mechanical protection in
commercial construction?
A. Lamp cord
B. Flexible extension cord
C. Electrical metallic tubing (EMT) installed according to code
D. Speaker wire
Answer: C
Rationale: EMT provides physical protection for conductors, serves as
an equipment grounding path when properly installed, and is widely
used in commercial occupancies.
9. What is the function of a transformer?
A. Increase current without changing voltage
B. Transfer electrical energy between circuits through electromagnetic
induction
C. Produce electricity chemically
D. Store electrical power indefinitely
Answer: B
Rationale: Transformers change voltage and current relationships
through electromagnetic induction while maintaining approximately
equal power minus losses.
4
