NEC Code Quiz for Grade 13

Which chapter of the NEC 2023 contains general requirements for electrical installations?

• Chapter 1

• Chapter 2

• Chapter 3

• Chapter 4

What is the minimum copper conductor size permitted for branch circuits according to NEC 2023?

• 18 AWG

• 16 AWG

• 14 AWG

• 12 AWG

Which color is typically used for the equipment grounding conductor in the United States as per NEC 2023?

• Red

• White

• Green

• Blue

According to NEC 2023, what is the primary function of an overcurrent protection device?

• To increase voltage

• To prevent excessive current

• To ground the circuit

• To provide lighting

Which article of the NEC 2023 covers wiring methods?

• Article 100

• Article 200

• Article 300

• Article 400

A 20-ampere branch circuit is to be installed in a dwelling unit. According to NEC 2023, which of the following wire sizes is the minimum allowed for copper conductors?

• 10 AWG

• 12 AWG

• 14 AWG

• 16 AWG

If a nonmetallic-sheathed cable is to be run through a wood stud, what must be done to protect the cable from physical damage as per NEC 2023?

• Paint the cable

• Use a metal plate if the cable is less than 1 1/4 inches from the edge

• Wrap the cable in tape

• Nothing is required

Which of the following is a requirement for proper bonding of metal water piping systems according to NEC 2023?

• Bonding must be made within 5 feet of entering the building

• Bonding is not required

• Bonding must be made at the farthest point from entry

• Only plastic pipes need bonding

A 15-ampere circuit is protected by a circuit breaker. According to NEC 2023, what is the maximum number of 120-volt duplex receptacles that can be installed on this circuit in a commercial office space?

• 8

• 10

• 12

• 13

When designing a lighting circuit, which NEC 2023 requirement must be considered to prevent overloading the circuit?

• The color of the wire insulation

• The total connected load should not exceed the ampacity of the circuit

• The number of switches

• The type of light bulbs used