Electrical Journeyman Exam Preparation

An electrician is planning to install a new circuit in a commercial building. According to the National Electrical Code (NEC), what is the minimum gauge of wire required for a 20-amp circuit?

• 16 AWG

• 14 AWG

• 12 AWG

• 10 AWG

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DOK Level 3: Strategic Thinking

When installing electrical wiring in a damp location, which type of conduit is most appropriate to ensure compliance with the NEC?

• Rigid Metal Conduit (RMC)

• Electrical Metallic Tubing (EMT)

• Flexible Metal Conduit (FMC)

• Liquidtight Flexible Nonmetallic Conduit (LFNC)

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DOK Level 3: Strategic Thinking

An electrician is tasked with installing a new lighting system in a warehouse. What is the maximum allowable voltage drop for branch circuits according to the NEC to ensure energy efficiency and proper operation?

• 1%

• 3%

• 5%

• 7%

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DOK Level 3: Strategic Thinking

In a residential wiring project, an electrician needs to determine the correct type of cable to use for a kitchen appliance circuit. Which of the following cables is most suitable for this purpose?

• NM-B (Non-Metallic Sheathed Cable)

• UF-B (Underground Feeder Cable)

• SE (Service Entrance Cable)

• MC (Metal Clad Cable)

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DOK Level 3: Strategic Thinking

An electrician is evaluating the installation of a new subpanel in a garage. What is the minimum clearance required in front of the subpanel to comply with NEC standards?

• 24 inches

• 30 inches

• 36 inches

• 42 inches

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DOK Level 3: Strategic Thinking

When planning the installation of a ground fault circuit interrupter (GFCI) in a bathroom, what is the maximum distance from the sink that the GFCI outlet can be installed according to the NEC?

• 3 feet

• 6 feet

• 9 feet

• 12 feet

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DOK Level 3: Strategic Thinking

An electrician is tasked with installing a new circuit for a central air conditioning unit. What type of circuit breaker is required to ensure compliance with NEC standards?

• Standard Circuit Breaker

• Arc Fault Circuit Interrupter (AFCI)

• Ground Fault Circuit Interrupter (GFCI)

• Dual Function Circuit Breaker

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DOK Level 3: Strategic Thinking

In a commercial building, an electrician needs to install a feeder circuit. What is the primary factor to consider when selecting the size of the feeder conductors?

• The length of the run

• The type of insulation

• The ambient temperature

• The calculated load

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DOK Level 3: Strategic Thinking

An electrician is planning to install a new electrical service in a residential building. What is the minimum size of the service entrance conductor for a 200-amp service according to the NEC?

• 2 AWG

• 1/0 AWG

• 2/0 AWG

• 3/0 AWG

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DOK Level 3: Strategic Thinking

When installing a new electrical circuit in an attic, what is the primary consideration for selecting the type of wiring method to use?

• The cost of materials

• The ease of installation

• The temperature rating of the conductors

• The availability of materials

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DOK Level 3: Strategic Thinking