TEXAS RESIDENTIAL ELECTRICIAN
CERTIFICATION EXAM ACTUAL 2026
VERIFIED QUESTIONS WITH ANSWERS
COMPREHENSIVE & RATIONALE|INSTANT
DOWNLOAD
1. A Texas residential electrician is installing a new 20-amp branch
circuit using copper conductors. According to the National
Electrical Code (NEC), what is the minimum conductor size
permitted?
A. 14 AWG
B. 12 AWG
C. 10 AWG
D. 8 AWG
Answer: B. 12 AWG
Rationale: NEC 210.19(A) and 310.16 require 12 AWG copper
conductors as the minimum size for a 20-amp branch circuit. Fourteen
AWG copper is limited to 15-amp circuits under NEC 240.4(D).
2. What is the primary purpose of bonding non-current-carrying
metal parts in a residential electrical system?
A. Increase voltage
B. Improve lighting brightness
C. Provide a low-impedance fault current path
D. Reduce conductor resistance
Answer: C. Provide a low-impedance fault current path
1
,Rationale: Bonding ensures fault current travels safely back to the
source, allowing overcurrent devices to operate quickly and minimizing
shock hazards.
3. Which NEC article primarily governs branch circuits in dwelling
units?
A. Article 110
B. Article 210
C. Article 250
D. Article 300
Answer: B. Article 210
Rationale: Article 210 covers branch circuits, required outlets,
receptacle spacing, GFCI requirements, AFCI protection, and related
residential wiring provisions.
4. A kitchen countertop receptacle serves portable appliances. Which
protection is required?
A. AFCI only
B. GFCI only
C. GFCI and AFCI
D. Surge protection only
Answer: C. GFCI and AFCI
Rationale: Kitchen countertop receptacles require GFCI protection
under NEC 210.8(A) and AFCI protection under NEC 210.12 for
dwelling unit branch circuits.
2
, 5. What is the maximum rating permitted for a standard residential
branch circuit supplying general lighting outlets?
A. 15 amperes
B. 20 amperes
C. 30 amperes
D. 40 amperes
Answer: B. 20 amperes
Rationale: General lighting circuits are commonly 15A or 20A. NEC
recognizes 20A as the highest standard general-purpose lighting branch
circuit in residential applications.
6. Which conductor is intentionally connected to earth at the service
disconnect?
A. Equipment grounding conductor
B. Neutral conductor
C. Traveler conductor
D. Switch leg
Answer: B. Neutral conductor
Rationale: The grounded (neutral) conductor is bonded to the
grounding electrode system only at the service disconnecting means.
7. A receptacle installed in a bathroom must be located on what type
of circuit?
A. Shared lighting circuit
B. Dedicated 20-amp bathroom circuit
C. 15-amp lighting circuit
D. Appliance circuit
3
, Answer: B. Dedicated 20-amp bathroom circuit
Rationale: NEC requires at least one 20-amp branch circuit supplying
bathroom receptacle outlets.
8. What is the minimum number of small-appliance branch circuits
required for a dwelling kitchen?
A. One
B. Two
C. Three
D. Four
Answer: B. Two
Rationale: NEC 210.11(C)(1) requires at least two 20-amp small-
appliance branch circuits serving kitchen, pantry, breakfast, and dining
areas.
9. Which wire color is commonly used to identify the grounded
conductor?
A. Green
B. Bare
C. White
D. Red
Answer: C. White
Rationale: White or gray insulation identifies grounded (neutral)
conductors.
10. What is the primary function of a GFCI?
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CERTIFICATION EXAM ACTUAL 2026
VERIFIED QUESTIONS WITH ANSWERS
COMPREHENSIVE & RATIONALE|INSTANT
DOWNLOAD
1. A Texas residential electrician is installing a new 20-amp branch
circuit using copper conductors. According to the National
Electrical Code (NEC), what is the minimum conductor size
permitted?
A. 14 AWG
B. 12 AWG
C. 10 AWG
D. 8 AWG
Answer: B. 12 AWG
Rationale: NEC 210.19(A) and 310.16 require 12 AWG copper
conductors as the minimum size for a 20-amp branch circuit. Fourteen
AWG copper is limited to 15-amp circuits under NEC 240.4(D).
2. What is the primary purpose of bonding non-current-carrying
metal parts in a residential electrical system?
A. Increase voltage
B. Improve lighting brightness
C. Provide a low-impedance fault current path
D. Reduce conductor resistance
Answer: C. Provide a low-impedance fault current path
1
,Rationale: Bonding ensures fault current travels safely back to the
source, allowing overcurrent devices to operate quickly and minimizing
shock hazards.
3. Which NEC article primarily governs branch circuits in dwelling
units?
A. Article 110
B. Article 210
C. Article 250
D. Article 300
Answer: B. Article 210
Rationale: Article 210 covers branch circuits, required outlets,
receptacle spacing, GFCI requirements, AFCI protection, and related
residential wiring provisions.
4. A kitchen countertop receptacle serves portable appliances. Which
protection is required?
A. AFCI only
B. GFCI only
C. GFCI and AFCI
D. Surge protection only
Answer: C. GFCI and AFCI
Rationale: Kitchen countertop receptacles require GFCI protection
under NEC 210.8(A) and AFCI protection under NEC 210.12 for
dwelling unit branch circuits.
2
, 5. What is the maximum rating permitted for a standard residential
branch circuit supplying general lighting outlets?
A. 15 amperes
B. 20 amperes
C. 30 amperes
D. 40 amperes
Answer: B. 20 amperes
Rationale: General lighting circuits are commonly 15A or 20A. NEC
recognizes 20A as the highest standard general-purpose lighting branch
circuit in residential applications.
6. Which conductor is intentionally connected to earth at the service
disconnect?
A. Equipment grounding conductor
B. Neutral conductor
C. Traveler conductor
D. Switch leg
Answer: B. Neutral conductor
Rationale: The grounded (neutral) conductor is bonded to the
grounding electrode system only at the service disconnecting means.
7. A receptacle installed in a bathroom must be located on what type
of circuit?
A. Shared lighting circuit
B. Dedicated 20-amp bathroom circuit
C. 15-amp lighting circuit
D. Appliance circuit
3
, Answer: B. Dedicated 20-amp bathroom circuit
Rationale: NEC requires at least one 20-amp branch circuit supplying
bathroom receptacle outlets.
8. What is the minimum number of small-appliance branch circuits
required for a dwelling kitchen?
A. One
B. Two
C. Three
D. Four
Answer: B. Two
Rationale: NEC 210.11(C)(1) requires at least two 20-amp small-
appliance branch circuits serving kitchen, pantry, breakfast, and dining
areas.
9. Which wire color is commonly used to identify the grounded
conductor?
A. Green
B. Bare
C. White
D. Red
Answer: C. White
Rationale: White or gray insulation identifies grounded (neutral)
conductors.
10. What is the primary function of a GFCI?
4
