NEC Code Prep Quiz 6 Random Order 90.1-511.3
12. A(n) ______ branch circuit supplies energy to one or more outlets to which appliances are to be connected.
100 Branch Circuit, Appliance appliance
7. when applying the general provisions for receptac le spacing to the rooms fo a dwelling unit which require receptacles in the wall space, no poitn measured horizontally along the floor line of any wall spac e may be more than _______ ft from an outlet.
210.52(A)(1) 6 ft
42. When breaks occur in dwelling unit kitchen countertop spaces for rangetops, refrigerators, or sinks, each cvoucntertop surface shall be considered a separaate counter space for determining receptacle placement.
210.52(C)(4) TRUE
15. able 220.56 may be applied to determine the load for thermostatically controlledor intermittently used ________ and other kitchen equipemtn in a commercial kitchen.
220.56 commercial electric cooking equipment, dishwasher booster heaters, or water heaters
8. If a set of 120/240V overhead service conductors terminate at a through-the-roof raceway or approved support, with less than 6 ft of these conductors passsing over the roof overhang, the minimum clearance above the roof for these srvice conductors shall be ______.
230.24(A) Ex 3 18 in.
25. A(n) ______ shall be considered equivalaent to an overcurrent trip unit for the purose of providing overcurrent protection fo conductors.
240.15(A) current transformer and overcurrent relay
45. Flexible cord used in listed extension cord sets shall be considered protected against overcurrent when used ________.
240.5(B)(3) within the extension cord's listing requirements
5. Fuseholders for cartgridge fuses shall be so designed that it is difficult to put a fuse of any given class into a fuseholder that is designed for a _____ lower or a _____ higher than that of the class to which the fuse belongs.
240.60(B) current, voltage
36. An 800A fuse rated at 1,000V ______ be used on a 250V system.
240.61 can
37. What is the minimum size copper equipment bonding jumper for a 40A rated circuit?
250.102(D) and Table 250.122 10 AWG
40. Metal gas piping shall be considered bonded by the equipment grounding conductor for the circuit that is likely to energize the piping system.
250.104(B)(1) TRUE
39. Electrical equipment permnaently mounted on skids, and the skids themselves, shall be ocnnected to the equipment gorunding conductor sized as required by _______.
250.112(K) 250.122
50. A wire-type equipment grounding conductor is permitted to be used as a grounding electrode conductor if it meets all of the requirements of Parts, II, III, and VI of Article 250.
250.121 Ex TRUE
14. In order for a metal undergorund water pipe to be used as a grounding electrode, it shall be in direct contact with the earth for ________.
250.52(A)(1) 10 ft or more
30. Surge protective devices shall only be located outdoors.
285.11 FALSE
28. Fittingsd and connectors shall be used only with the specidfic wiring methods for which they are designed and listed.
300.15 TRUE
18. Metal raceways shall not be -____ by welding to the raceway.
300.18(B) supported , terminated, and connected
11. Where raceways contain insulated circuit conduc tors _____ AWG and larger, the conductors shall be protected from abrazion during and after installation by a fitting that provides a smooth, rounded insulating surface.
300.4(G) 4 AWG
46. Direct-buried survace conductors that are not encased in concrete and that are buried 18 in. or more below grade shall have their location identified by a warning ribbon placed in the trench at least ______ in . Above the underground installation.
300.5(D)(3) 12 in
16. An exposed wiring system for indoor wet locations where walls are frequently washed shall be mounted so that there is at least a ______ between the mounting surface and the electrical equipemnt.
300.6(D) 1/4 in airspace
3. On a three-phase, 4-wire, wye circuit, where the major portion of the load consists of nonlinear loads, the neutral conductor shall be counted when aplying 310.15(B)(3)(a) adjustment factors.
310.15(B)(5)© TRUE
38. Power distribution blocks shall be permitted in pull and junction boxes over 100 cu in. when _____.
314.28(E)(1), (2), and (3) they are listed as a power distrubution block, they are installed in a box not smaller than required by the installation instruction of the power distribution block, the junction box is sized so that the wire-bending space requirements of 312.6 can be met
49. Type NM cable shall be protected from physical damage by ________.
334.15(B) EMT, Schedule 80 PVC conduit and RMC
21. ype SE cable can be used for interior wiring as long as it complies with the installation requirements of Part II of Article 334, excluding 334.80
338.10(B)(4)(a) TRUE
13. FMC shall not be installed ______.
348.12(1), (6), and (7) in wet locations, embedded in poured concrete or where subject to physical damage
47. LFNC shall be permitted for _______.
356.10(3) and (4) direct burial where listed and marked for the purpose, exposed work, outdoors where listed and marked for this purpose.
19. The ampacity adjustmentt factors in 310.15(B)(3)(a) shall be applied to a metal wireway only where the number of current-carrying conductors in any cross section fo the wireway exceeds ______.
376.22(B) 30
32. Metal mutloutlet assemblies can pass thorugh a dry partition, provided no receptaacle is concealed in the partition and cover of the exposed portion of the sstem can be removed.
380.76 TRUE
10. Surface metal raceways and associated fittings shall be supporrted ________.
386.3 in accordance ith the manufactureres installation instructions
29. Surface metal raceways enclosures providing a transition from other wiring methods hsall have a means for connecting a(n) ______ conductor.
386.6 equipment grounding
6. Single-throw knife switches shall be installed so that gravity will tend to close the switch.
404.6(A) FALSE
24. The metal mounting yoke of a replacemte3nt switch is not requried to be connected to an equipment grounding conductor if the wiring at the existing switch does nto ocntain an euqipment grounding conductor, and the _____.
404.9(B) Ex 1 switch faceplate is nonmetallic with nonmetallic screws or replacement switch is GFCI protected
23. Weather-resistant receptacles _____ where replacements are made at receptacle outlets that are requireed to be so protected elsewhere in the Code.
406.4(D)(6) shall be provided
22. If a protective device rating is marked on an appliance, the branch-circuit overcurrent device rating shall not exceed ____ percent of the protective device rating marked on the appliance.
422.11(A) and 422.10(A) 100
1. The disconnecting means for the controller and motor shall open all ungrounded supply conductors.
430.103 TRUE
4. A motor disconnecting means can be a listed _______.
430.109(A)(1), (2), and (3) molded case circuit breaker, motor-circuit switch rated in horsepower, or molded case switch
48. A horsepower-rated _______ having a horsepower rating not less than th motor rating shall be permitted to serve as the disconnecting means.
430.109(F) attachemnt plug and receptacle, or flanged sufrace inlet and cord connector
44. Overloadd devices are intended to protect motors, motor control apparatus, and motor branch-circuit conductors against _______.
430.31 excessive heating due to motor overloads and excessive heating due to failure to start
34. A separate overload device used to prootect continous-duty motors rated more than 1 hp shall be seelcted to trip at no more than _____ percent of the motor nameplate full-load current rating if marked with a service factor of 1.15 or greater.
430.32(A)(1) 125
27. Motor control circuit transformers, with a primary current rating of less than 2A, can have the primary protection device set at no more than _______ percent of the rated primary current rating.
430.72(C)(4) 500
43. The primary overcurrent protection for a transformer rated 1,000V, nominal, or less, with no secondary protection and having a primary current rating of over 9A shall be set at not more than ______ percent.
450.3(B) and Table 450.3(B), Note 1 1.25
31. ______ is(are) among the wiring methods permitted within a Class 1, Division 2 location.
501.10(B)(1)(5), (B)(1)(7), and (B)(1)(8) Type MC, MV, TC, or TC-ER cable, including installation in cable tray systems and terminated with listed fittings, optical fiber cable types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC installed in cable trays or any other raceway in accordance with 501.10(B) and sealled in accordance with 501.15 and Cablebus
33. Luminaires Installed in Class I, Division 1 locations shall be identified as a complete assembly for the Class I, Division 1 lcoation and shall be clearly marked to indicate the _____- for which it is identified.
501.130(A)(1) maximum wattage of lamps
2. A sealing fitting shall not be required fi a metal conduit passes compleely through a Class I, Division 2 location if the termination points of the unbroken conduit are located in unclassified locations and it has no fittings less than _______ in. of either ide of the boundary of the hazardous (classified) location.
501.15(B)(2) Ex 1 12 in
35. When FMC or LFMC is used as permitted in Class I, Division 2 locations, it shall include an equipment bonding jumper of the wire type in compliance with 250.102.
501.30(B) TRUE
17. Raceways permitted as a wiring method in Class II, Division 1 locations include _________.
502.10(A)(1)(1) threaded RMC and steel IMC
9. Luminaires installed in Class II, Division 1 locations shall be protected from phsyical damage by a suitable ______.
502.130(A)(2) guard or by location
41. Luminaire for fixed lighting in Class II, Division 2 locaitons shall be equipped with enclosures that are _____ or otherwise identifeid for the lcoation.
502.130(B)(2) dusttight
20. Article 503 covers the requirements for electrical and electronic equipment and wiring in class III locations where fire or explosion hazards may exisrt due to ingitible ______
503.1 fibers/flyings
26. The authority having jurisdiction shall not be allowed to enforce any requireements of Chapter 7 (special conditions) or Chapter 8 (Communication Systems).
90.4 FALSE