Apprentice Electrician Licensing Exam

Apprentice Electrician Licensing Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• Which of the following is the standard color for grounding conductors

in residential wiring?

• Red
• Black
• Green
• White

Green is designated for grounding conductors to prevent electric shock hazards.

• What is the maximum allowable voltage drop for branch circuits in a

residential dwelling?

• 2%

B. 3% 1 / 4

• 5%

D. 10%

The NEC recommends a maximum voltage drop of 5% for branch circuits to ensure proper device operation.

• Which type of conduit is most suitable for outdoor direct burial?

A. EMT

B. PVC

C. IMC

D. RMC

PVC conduit is resistant to moisture and corrosion, making it suitable for direct burial.

• How often should GFCI outlets be tested?
• Once a month
• Once a year
• Once a month
• Only during installation

GFCI outlets should be tested monthly to ensure proper protection against ground faults.

• What is the primary purpose of a circuit breaker?
• Reduce voltage
• Increase current
• Interrupt overcurrent
• Store electrical energy 2 / 4

Circuit breakers protect wiring and equipment by interrupting excessive current.

• What is the NEC-required working space in front of an electrical panel?
• 24 inches
• 28 inches
• 36 inches
• 48 inches

A minimum of 36 inches of clear working space is required in front of electrical equipment for safe operation.

• What is the correct maximum number of 12 AWG conductors allowed

in a standard 20-ampere residential circuit?

• 5
• 10
• 15
• 20

The NEC allows a maximum of 10 outlets per 20-ampere circuit in residential settings, typically using 12 AWG wire.

• Which of the following devices protects against short circuits?
• Transformer
• Circuit breaker
• Resistor
• Contactor 3 / 4

Circuit breakers are designed to interrupt current in case of short circuits or overloads.

• When splicing copper conductors, which of the following should be

used?

• Electrical tape only
• Wire nut
• Solder only
• Clamp connector only

Wire nuts are commonly used for safe and secure splicing of copper conductors.

• Which type of insulation is rated for 90°C in dry locations?

A. THW

B. THHN

• UF

D. NM-B

THHN wire insulation is rated for 90°C in dry locations, per NEC standards.

• A 240V single-phase load draws 30A. What is the total power

consumed?

A. 6,000 W

B. 7,200 W

• 7,200 W
• / 4