NEC Chapter 4: Equipment for General Use

18. Conduits and raceways, including end fittings, shall not rise more than _______ in., above the bottom of a switchboard enclosure. (a) 3 (b) 4 (c) 5 (d) 6

(a) 3 408.5

13. In dwelling units, all nonlocking type 125V and 250V, 15A and 20A receptacles installed _______ shall be listed as tamper resistant. (a) in bedrooms (b) outdoors, at grade level (c) above counter tops (d) in all areas specified in 210.52 and 550.13

(d) in all areas specified in 210.52 and 550.13 406.12(1)

43. Torque requirements for motor control circuit device terminals shall be a minimum of _______ Ib-in. (unless otherwise identified) for screw-type pressure terminals used for 14 AWG and smaller copper conductors. (a) 7 (b) 9 (c) 10 (d) 15

(a) 7 430.9(C)

4. The number of fixture wires in a single conduit or tubing shall not exceed the percentage fill specified in _______. (a) Chapter 9, Table 1 (b) Table 250.66 (c) Table 310.15(B)(16) (d) 240.6

(a) Chapter 9, Table 1 402.7

5. As a general rule, the grounded circuit conductor for the controlled lighting circuit shall be installed at the location where switches control lighting loads that are supplied by a grounded general-purpose branch circuit serving bathrooms, hallways, stairways, or rooms suitable for human habitation or occupancy as defined in the applicable building code. (a) True (b) False

(a) True 404.2(C)

15 Nongrounding, nonlocking-type, 15A and 20A, 125V and 250V receptacles used for replacements in a dwelling unit shall not be required to be listed as tamper resistant. (a) True (b) False

(a) True 406.12 Ex to (1), (2), (3), (4), (5), (6), and (7): (4)

11 Receptacles mounted to and supported by a cover shall be secured by more than one screw unless listed and identified for securing by a single screw. (a) True (b) False

(a) True 406.5(C)

27. In indoor locations other than dwellings and associated accessory buildings, fluorescent luminaires that utilize double-ended lamps and contain a ballast(s) that can be serviced in place shall have a disconnecting means either internal or external to each luminaire. (a) True (b) False

(a) True 410.130(G)(1)

28. When connected to multiwire branch circuits, the fluorescent luminaire disconnect shall simultaneously break all supply conductors of the ballast, including the grounded conductor. (a) True (b) False

(a) True 410.130(G)(2)

23. When electric-discharge and LED luminaires that are designed not to be supported solely by the outlet box are surface mounted over a concealed outlet box, the luminaire shall provide access to the wiring within the outlet box by means of suitable openings in the back of the luminaire. (a) True (b) False

(a) True 410.24(B)

25. Lampholders of the screw-shell type shall be installed for use as lampholders only. (a) True (b) False

(a) True 410.90

26. Luminaires containing a metal halide lamp (other than a thick-glass PAR lamp) shall be provided with a containment barrier that encloses the lamp, or shall be provided with a physical means that only allows the use of a(n) _______. (a) Type 0 lamp (b) Type CB lamp (c) a or b (d) inert gas

(a) Type 0 lamp 410.130(F)(5)

9. General-use _______ switches shall be used only to control permanently installed incandescent luminaires unless listed for control of other loads and installed accordingly. (a) dimmer (b) fan speed control (c) timer a (d) all of these

(a) dimmer 404.14(E)

33. Receptacles for built-in dishwashers and trash compactors shall In be located to protect against physical damage to the _______. (a) flexible cord (b) cord cap (c) appliance (d) receptacle

(a) flexible cord 422.16(B)(2)(4)

48. Separately derived system generators shall have the _______ conductor sized not smaller than required to carry the maximum unbalanced current as determined by 220.61. (a) neutral (b) grounding (c) a and b (d) none of these

(a) neutral 445.13(A)

1. HPD cord shall be permitted for _______. (a) not hard usage (b) hard usage (c) extra-hard usage (d) all of these

(a) not hard usage 400.4 and Table 400.4

44. Open motors having commutators or collector rings shall be located or protected so that sparks cannot reach adjacent combustible material. This shall not prohibit the installation of these motors _______. (a) on wooden floors (b) over combustible fiber (c) under combustible material (d) none of these

(a) on wooden floors 430.14(B) Ex

20. A luminaire marked "Suitable for Wet Locations" _______ be permitted to be used in a damp location. (a) shall (b) shall not (c) a or b (d) none of these

(a) shall 410.10(A)

24. Branch-circuit conductors within _______ in., of a ballast shall have an insulation temperature rating not lower than 90°C (194°F). (a) 1 (b) 3 (c) 6 (d) 8

(b) 3 410.68

32. An in-sink waste disposer can be cord-and-plug-connected, but the cord shall not be less than 18 in. or more than _______ in. in length. (a) 30 (b) 36 (c) 42 (d) 48

(b) 36 422.16(B)(1)(2)

22. In clothes closets, recessed incandescent or LED luminaires with a completely enclosed light source can be installed in the wall or the ceiling, provided there is a minimum clearance of _______ in. between the luminaire and the nearest point of a storage space. (a) 3 (b) 6 (c) 9 (d) 12

(b) 6 410.10(C)(3)

41. The minimum clearance between the heating elements of electric space-heating cables installed in ceilings and outlet boxes and junction boxes used for mounting surface luminaires shall not be less than _______ in. (a) 6 (b) 8 (c) 14 (d) 18

(b) 8 424.39

16. Panelboards supplied by a three-phase, 4-wire, delta-connected system shall have the phase with the higher voltage-to-ground (high-leg) connected to the _______ phase. (a) A (b) B (c) C (d) any of these

(b) B 408.3(E)

17. Panelboard circuit directories can include labels that depend on transient conditions of occupancy. (a) True (b) False

(b) False 408.4(A)

29. Low-voltage lighting systems can be concealed or extended through a building wall, floor, or ceiling without regard to the wiring method used. (a) True (b) False

(b) False 411.5(A)(1)

2. The allowable ampacity of flexible cords and flexible cables is found in _______. (a) Table 310.15(B)(16) (b) Tables 400.5(A)(1) and (2) (c) Chapter 9, Table 1 (d) Table 430.52

(b) Tables 400.5(A)(1) and (2) 400.5(A)

10. Where attachment to an equipment grounding conductor does not exist in the receptacle enclosure, a non-grounding-type receptacle shall be permitted to be replaced with a GFCI-type receptacle; however, some equipment or appliance manufacturers require that the _______ to the equipment or appliance includes an equipment grounding conductor. (a) feeder (b) branch circuit (c) small-appliance circuit (d) none of these

(b) branch circuit 406.4(D)(2)(c) Note 1

21. Luminaires can be installed in a commercial cooking hood if the luminaire is identified for use within a _______ cooking hood. (a) nonresidential (b) commercial (c) multifamily (d) all of these

(b) commercial 410.10(C)(1)

7. Nonmetallic boxes for switches shall be installed with a wiring method that provides or includes a(n) _______. (a) grounded conductor (b) equipment grounding conductor (c) inductive balance (d) none of these

(b) equipment grounding conductor 404.12

45. In determining the highest rated motor for purposes of complying with 430.24, 430.53(B), and 430.53(C), the highest rated motor shall be based on the rated full-load current as selected _______. (a) from the motor nameplate (b) from Tables 430.247, 430.248, 430.249, and 430.250 (c) by multiplying the horsepower by 746 watts (d) using the largest horsepower motor

(b) from Tables 430.247, 430.248, 430.249, and 430.250 430.17

42. The motor _______ currents listed in Tables 430.247 through 430.250 shall be used to determine the ampacity of motor circuit conductors and short-circuit and ground-fault protection devices. (a) nameplate (b) full-load (c) power factor (d) service factor

(b) full-load 430.6(A)(1)

19. Unused openings for circuit breakers and switches in switch- boards and panelboards shall be closed using _______, or other approved means that provide protection substantially equivalent to the wall of the enclosure. (a) duct seal and tape (b) identified closures (c) exothermic welding (d) sheet metal

(b) identified closures 408.7

37. Appliances that have a unit switch with a marked-_______ position that disconnects all the ungrounded conductors can serve as the appliance disconnecting means. (a) on (b) off (c) on/off (d) all of these

(b) off 422.34

46. The motor branch-circuit short-circuit and ground-fault protective device shall be capable of carrying the _______ current of the motor. (a) varying (b) starting (c) running (d) continuous

(b) starting 430.52(B)

38. Conductors located above an electric space-heated ceiling are considered to be operating in an ambient temperature of _______. (a) 20°C (b) 30°C (c) 50°C (d) 86°C

(c) 50°C 424.36

40. Electric space-heating cables shall not be installed _______. (a) in tub and shower walls (b) under cabinets or similar built-ins having no clearance to the floor (c) a and b (d) none of these

(c) a and b 424.38(B)(6) and (7)

34. Wall-mounted ovens and counter-mounted cooking units shall be permitted to be _______. (a) permanently connected (b) cord-and-plug-connected (c) a or b (d) none of these

(c) a or b 422.16(B)(3)

35. Ceiling-suspended (paddle) fans shall be supported independently of an outlet box or by a listed _______. (a) outlet box or listed outlet box system identified for the use and installed in accordance with 314.27(C) (b) outlet box system, a listed locking support and mounting receptacle, and a compatible factory installed attachment fitting designed for support, identified for the use and installed in accordance with 314.27(E) (c) a or b (d) none of these

(c) a or b 422.18(1) and (2)

39. Electric space-heating cables shall not be installed _______ walls. (a) through (b) under (c) a or b (d) none of these

(c) a or b 424.38(B)(4)

12. A receptacle is considered to be in a location protected from the weather when located under roofed open porches, canopies, marquees, and the like, where it will not be subjected to _______. (a) spray from a hose (b) a direct lightning hit (c) beating rain or water runoff (d) falling or wind-blown debris

(c) beating rain or water runoff 406.9(A)

50. Storage batteries, other than lead-acid batteries, and battery management equipment shall be _______. (a) identified (b) labeled (c) listed (d) approved

(c) listed 480.3

36. Any combustible ceiling finish that is exposed between the edge of a ceiling-suspended (paddle) fan canopy or pan and an outlet box and that has a surface area of _______ sq in. or more shall be covered with noncombustible material. (a) 45 (b) 90 (c) 135 (d) 180

(d) 180 422.21

49. If the 15 kW or smaller portable generator was manufactured or remanufactured prior to _______, listed cord sets or devices incorporating listed GFCI protection for personnel identified for portable use shall be permitted. (a) January 1, 2012 (b) January 1, 2013 (c) January 1, 2014 (d) January 1, 2015

(d) January 1, 2015 445.20(B) Ex to (A) and (B)

3. Flexible cord sets and power-supply cords shall not be concealed behind building _______, or run through doorways, windows, or similar openings. (a) structural ceilings (b) suspended or dropped ceilings (c) floors or walls (d) all of these

(d) all of these 400.12(3) and (5)

8. Alternating-current general-use snap switches are permitted to control _______. (a) resistive and inductive loads that do not exceed the ampere and voltage rating of the switch (b) tungsten-filament lamp loads that do not exceed the ampere rating of the switch at 120V (c) motor loads that do not exceed 80 percent of the ampere and voltage rating of the switch (d) all of these

(d) all of these 404.14(A)(1), (2), and (3)

6. Which of the following switches shall indicate whether they are in the open (off) or closed (on) position? (a) General-use switches, (b) Motor-circuit switches. (c) Circuit breakers, (d) all of these

(d) all of these 404.7

14. In dwelling units, all nonlocking-type 125V and 250V, 15A and 20A receptacles installed _______ shall be listed as tamper resistant. (a) in business offices, corridors, waiting rooms and the like in clinics, medical and dental offices and outpatient facilities (b) as a subset of assembly occupancies described in 518.2 to include places of waiting transportation, gymnasiums, skating rinks, and auditoriums (c) in dormitories (d) all of these

(d) all of these 406.12(5), (6), and (7)

31. _______ rated 250V or less and 60A or less, single- or 3-phase, shall be provided with GFCI protection for personnel. (a) Automotive vacuum machines provided for public use (b) Drinking water coolers (c) Cord-and-plug-connected high-pressure spray washing machines (d) all of these

(d) all of these 422.5(A)(1), (2), and (3)

47. An attachment plug and receptacle can serve as the disconnecting means for cord-connected _______. (a) room air conditioners (b) household refrigerators and freezers (c) drinking water coolers and beverage dispensers (d) all of these

(d) all of these 440.13

30. Insulated secondary circuit conductors of low-voltage lighting systems shall be _______. (a) installed in a Chapter 3 wiring method (b) supplied by a Class 2 power source and shall use Class 2 cable in accordance with Article 725 (c) installed not less than 7 ft above the finished floor unless listed for a lower installation height (d) any of these

(d) any of these 411.6(D)(1), (2), and (3)