National Electrical Code (NEC) Flashcards
6 cards from real Electrician practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 National Electrical Code (NEC) flashcards as text
Per the NEC, what is the maximum length a flexible cord can be used as a substitute for fixed wiring?
Answer: Flexible cords are never permitted as fixed wiring
The NEC prohibits using flexible cords as a substitute for fixed building wiring under NEC 400.12.
What does NEC Article 230 cover?
Answer: Services
NEC Article 230 covers all aspects of electrical service installations, including service conductors and equipment.
According to the NEC, what minimum size copper conductor is required for a 20-ampere branch circuit?
Answer: 12 AWG
The NEC requires a minimum of 12 AWG copper for a 20-ampere branch circuit per Table 310.16.
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?
Answer: Article 250
NEC Article 250 covers all grounding and bonding requirements, including bonding of metal piping systems.
What is the minimum size service entrance conductor required for a single-family dwelling per the NEC?
Answer: 4 AWG copper
NEC 230.79 requires a minimum 100-ampere service for single-family dwellings, which corresponds to 4 AWG copper for service entrance conductors.
Per the NEC, tamper-resistant receptacles are required in which locations of a dwelling unit?
Answer: All areas accessible to children such as bedrooms and living areas
The NEC requires tamper-resistant receptacles in all areas of dwelling units where children may be present, including bedrooms, living areas, and hallways.