CALIFORNIA RESIDENTIAL ELECTRICIAN
CERTIFICATION EXAM ACTUAL 2026
VERIFIED QUESTIONS WITH ANSWERS
COMPREHENSIVE & RATIONALE
1. A 120-volt residential branch circuit supplies
general lighting loads. According to the NEC, the
maximum continuous load permitted on a 20-ampere
circuit is:
A. 10 amperes
B. 15 amperes
C. 16 amperes
D. 20 amperes
Answer: C. 16 amperes
Rationale: NEC 210.20(A) requires overcurrent
protection for continuous loads at 125% of the
continuous load. A 20-amp circuit can supply 80% of its
rating for continuous loads: 20 × 0.80 = 16 amperes.
2. In a dwelling unit, which conductor is normally
used to provide the grounded (neutral) connection?
A. Equipment grounding conductor
B. Ungrounded conductor
1
,C. Grounded conductor
D. Bonding jumper
Answer: C. Grounded conductor
Rationale: The grounded conductor, commonly called
the neutral conductor, carries return current from loads
back to the service equipment and is intentionally
connected to earth at the service disconnect.
3. A bathroom receptacle outlet must be protected by:
A. AFCI only
B. GFCI protection
C. Surge protection only
D. Overcurrent protection only
Answer: B. GFCI protection
Rationale: NEC 210.8(A) requires GFCI protection for
dwelling unit bathroom receptacles because bathrooms
contain increased shock hazards due to moisture and
grounded surfaces.
4. What is the primary purpose of an equipment
grounding conductor?
2
,A. Carry normal circuit current
B. Increase voltage
C. Provide a low-impedance fault-current path
D. Reduce energy consumption
Answer: C. Provide a low-impedance fault-current
path
Rationale: Equipment grounding conductors provide a
safe path for fault current, allowing breakers or fuses to
open the circuit quickly during a ground fault.
5. A residential kitchen countertop receptacle circuit is
generally required to be:
A. 10-ampere rated
B. 15-ampere rated only
C. 20-ampere small-appliance branch circuit
D. Dedicated 40-ampere circuit
Answer: C. 20-ampere small-appliance branch circuit
Rationale: NEC 210.11(C)(1) requires at least two 20-
ampere small-appliance branch circuits for kitchen and
dining area receptacle outlets.
3
, 6. What is the minimum burial depth for a typical
residential 120-volt GFCI-protected underground
branch circuit using direct burial cable?
A. 6 inches
B. 12 inches
C. 18 inches
D. 36 inches
Answer: B. 12 inches
Rationale: NEC Table 300.5 permits reduced burial
depths for certain GFCI-protected residential branch
circuits. Specific conditions must be met.
7. Which type of protection is designed to reduce fire
risk from arcing faults?
A. GFCI
B. AFCI
C. Surge protector
D. Transformer
Answer: B. AFCI
Rationale: Arc-fault circuit interrupters detect
dangerous electrical arcs that may not produce enough
current to trip a standard breaker but can ignite
combustible materials.
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CERTIFICATION EXAM ACTUAL 2026
VERIFIED QUESTIONS WITH ANSWERS
COMPREHENSIVE & RATIONALE
1. A 120-volt residential branch circuit supplies
general lighting loads. According to the NEC, the
maximum continuous load permitted on a 20-ampere
circuit is:
A. 10 amperes
B. 15 amperes
C. 16 amperes
D. 20 amperes
Answer: C. 16 amperes
Rationale: NEC 210.20(A) requires overcurrent
protection for continuous loads at 125% of the
continuous load. A 20-amp circuit can supply 80% of its
rating for continuous loads: 20 × 0.80 = 16 amperes.
2. In a dwelling unit, which conductor is normally
used to provide the grounded (neutral) connection?
A. Equipment grounding conductor
B. Ungrounded conductor
1
,C. Grounded conductor
D. Bonding jumper
Answer: C. Grounded conductor
Rationale: The grounded conductor, commonly called
the neutral conductor, carries return current from loads
back to the service equipment and is intentionally
connected to earth at the service disconnect.
3. A bathroom receptacle outlet must be protected by:
A. AFCI only
B. GFCI protection
C. Surge protection only
D. Overcurrent protection only
Answer: B. GFCI protection
Rationale: NEC 210.8(A) requires GFCI protection for
dwelling unit bathroom receptacles because bathrooms
contain increased shock hazards due to moisture and
grounded surfaces.
4. What is the primary purpose of an equipment
grounding conductor?
2
,A. Carry normal circuit current
B. Increase voltage
C. Provide a low-impedance fault-current path
D. Reduce energy consumption
Answer: C. Provide a low-impedance fault-current
path
Rationale: Equipment grounding conductors provide a
safe path for fault current, allowing breakers or fuses to
open the circuit quickly during a ground fault.
5. A residential kitchen countertop receptacle circuit is
generally required to be:
A. 10-ampere rated
B. 15-ampere rated only
C. 20-ampere small-appliance branch circuit
D. Dedicated 40-ampere circuit
Answer: C. 20-ampere small-appliance branch circuit
Rationale: NEC 210.11(C)(1) requires at least two 20-
ampere small-appliance branch circuits for kitchen and
dining area receptacle outlets.
3
, 6. What is the minimum burial depth for a typical
residential 120-volt GFCI-protected underground
branch circuit using direct burial cable?
A. 6 inches
B. 12 inches
C. 18 inches
D. 36 inches
Answer: B. 12 inches
Rationale: NEC Table 300.5 permits reduced burial
depths for certain GFCI-protected residential branch
circuits. Specific conditions must be met.
7. Which type of protection is designed to reduce fire
risk from arcing faults?
A. GFCI
B. AFCI
C. Surge protector
D. Transformer
Answer: B. AFCI
Rationale: Arc-fault circuit interrupters detect
dangerous electrical arcs that may not produce enough
current to trip a standard breaker but can ignite
combustible materials.
4
