Electrician National Electrical Code (NEC) 3

Question 1

Per the NEC, what is the maximum length a flexible cord can be used as a substitute for fixed wiring?

Accepted Answer

Flexible cords are never permitted as fixed wiring

Answer

6 feet

Answer

10 feet

Answer

25 feet

Question 2

What does NEC Article 230 cover?

Accepted Answer

Services

Answer

Grounding and bonding

Answer

Overcurrent protection

Answer

Branch circuits

Question 3

According to the NEC, what minimum size copper conductor is required for a 20-ampere branch circuit?

Accepted Answer

12 AWG

Answer

14 AWG

Answer

10 AWG

Answer

8 AWG

Question 4

Under the NEC, bonding of metal water piping systems is required when the piping is likely to become energized. What is this requirement found in?

Accepted Answer

Article 250

Answer

Article 200

Answer

Article 300

Answer

Article 350

Question 5

What is the minimum size service entrance conductor required for a single-family dwelling per the NEC?

Accepted Answer

4 AWG copper

Answer

6 AWG copper

Answer

2 AWG copper

Answer

1/0 AWG copper

Question 6

Per the NEC, tamper-resistant receptacles are required in which locations of a dwelling unit?

Accepted Answer

All areas accessible to children such as bedrooms and living areas

Answer

Only in kitchens

Answer

Only in bathrooms

Answer

Only in exterior locations