Electrical Codes & Standards Flashcards

Under NEC 410.116, what clearance is required between a recessed incandescent luminaire and thermal insulation?

Answer: 2 inches

NEC 410.116(B) requires at least 3 inches of clearance between a recessed luminaire and thermal insulation unless the fixture is IC-rated.

Which NEC article governs emergency systems used in hospitals and life safety applications?

Answer: Article 700

NEC Article 700 covers legally required emergency systems that provide power for egress lighting and life safety when normal power fails.

Per NEC 334.15, Type NM cable must be protected from physical damage where it is exposed and runs within how many feet of the floor in an accessible area?

Answer: 4.5 feet

NEC 334.15(B) requires NM cable to be protected by conduit or other means where it runs within 4.5 feet (1.4 m) of the floor in accessible areas.

What does the NEC classify as a 'wet location'?

Answer: Locations exposed to weather or saturation with water

Per NEC Article 100, a wet location is one exposed to weather, water saturation, or similar severe moisture conditions.

Under NEC 250.122, what is the minimum size equipment grounding conductor (EGC) for a 60A circuit using copper wire?

Answer: 10 AWG

NEC Table 250.122 specifies that a 60A overcurrent device requires a minimum 10 AWG copper equipment grounding conductor.

Which edition of the NEC is typically adopted within a few years of its publication cycle?

Answer: Every three years

The NEC is revised and published on a three-year cycle by NFPA, though adoption by jurisdictions varies.

Per NEC 110.3(B), listed or labeled equipment shall be installed and used in accordance with:

Answer: Any instructions included in the listing or labeling

NEC 110.3(B) requires that listed or labeled equipment be installed and used in accordance with any instructions included in the listing or labeling.