NEC Prep Quiz Chapter 10 Random Order [90.1-820.133]

50. " bonded " is defined as ________ to establish electrical continuity and conductivity

100 Bonded connected

1. Equipment or materials included in a list published by a testing laboratory acceptable to the authority having jurisdiction are said to be "____________"

100 Listed listed

11. The required working space for access to live parts of equipment operating at 300 volts-to-ground, where there are exposed live parts on one side and grounded parts on the other side, is _____ ft.

110.26(A)(1) and Table 110.26(A)(1), Condition 2 3 1/2 ft

14. The recommended maximum total voltage drop on branch-circuit conductors is _____ percent.

210.19(A) Note 4 0.03

32. When an underground metal water piping system is used as a grounding electrode, bonding shall be provided around insulated joints and around any equipment that is likely to be disconnected for repair or replacement.

250.68(B) True

43. Temporary currents resulting from abnormal conditions, such as ground Faults, Are Not considered to be objectionable currents.

250.6© True

6. Article 285 covers surge protective devices rated over 1 kV.

285.1 FALSE

45. Type MC cable listed for ________ is permitted to be installed underground under a building without installation in a Raceway.

300.5© Ex 2 direct burial

40. Conductor adjustment factors shall not apply to conductors in raceways having a length not exceeding ________ inches.

310.15(B)(3)(a)(2) 24 inches

24. Boxes can be secured to suspended-ceiling framing members by mechanical means such as blank, or by other means I identified for use with the suspended-ceiling framing members.

314.23(D)(1) any of these: bolts, screws, rivets.

39. Receptacle shall not be grouped or ganged and enclosures unless the voltage between adjacent devices does not exceed ________.

406.5(I) 300V

48. A 120-volt section of lighting track that is continuously loaded shall not exceed 12 ft in length, in accordance with 220.43(B)

410.151(B) and 220.43(B) False

30. The rules of ________, as applicable, shall apply to air-conditioning and refrigerating equipment that does not incorporate a hermetic refrigerant motor-compressor

440.3(B) any of these Article 422, Article 424, Article 430

27. A blank shall be located at the point of entry to an elevator machine room.

620.23(B) lighting switch

37. A pool light junction box connected to a conductor that extends directly to a forming shell shall be _____ for this use.

680.24(A)(1) all of these: listed, identified, labeled

34. Fire alarm equipment supplying power - limited fire alarm circuits shall be durably marked where plainly visible to indicate each circuit that is ________.

760.124 a power-limited fire alarm circuit

35. Accepted industry practices for optical fiber installations are described in ________.

770.24 Note 1 all of these: Anis/neck/byssi 568, standard for installing commercial building telecommunications Cabling, ansi/neca/FOE 301, standard for installing and testing fiber optic cable, other ANSI approved installation standards.

10. The term "rainproof" is typically used in conjunction with enclosure type(s) _______.

Table 110.28 Note 1 3 and 3R

25. T P T & T S T cords shall be permitted in length not exceeding blank seat when attached directly to a portable appliance rated 50 Watts or less.

Table 400.4 Note 11 8 ft

3. Bends made in interlocked or corrugated sheath Type MC cable shall have a radius of at least ______ times the external diameter of the metallic sheath.

330.24(B) seven

5. Cable trays shall be supported at intervals in accordance with the installation instructions.

392.30(A) TRUE

15. Transformers and capacitors installed in Class 1, Division 1 locations containing a liquid that will burn shall be installed in vaults.

501.100(A)(1) TRUE

21. Where they store circuit operates at over 30 volts, single - conductor type USE-2 or listed and identified PV wires installed in a readily accessible location shall be installed in a Raceway.

690.31©(1) TRUE

16. Where angle or U pulls are made, the distance between each raceway entry inside the box or conduit body and the opposite wall of the box or conduit body shall not be less than _____ times the trade size of the largest raceway in a row plus the sum of the trade sizes of the remaining raceways in the same wall and row.

314.28(A)(2) six

46. In industrial establishments with restricted Public Access we're only qualified persons will service the installation, muchly cable is allowed to be installed in a Class 1, Division 1 location if it ________, and terminated with fittings listed for the application. Such cable shall comply with part 2 of article 3.30.

501.10(A)(1)© all of these: Is listed for use in class 1, Zone one, or Division One locations. Has a gas / vapor tight continuous corrugated metallic sheath, and overall jacket of suitable polymeric material. Has a separate equipment grounding conductor in accordance with 250.122

7. When necessary to employ flexible connections in a Class I, Division 1 locations, such as at motor terminals, flexible fittings listed for the location or flexible cord in accordance with 501.140, are permitted if terminated with cord connectors listed for the location.

501.10(A)(2)(1) and (A)(2)(2) TRUE

13. Where the Class 1, Division 1 location boundary is below grade, a sealing fitting shall be permitted to be installed _____, and there shall not be any unions, couplings, boxes, or fittings between the sealing fitting and the grade, other than listed explosionproof reducers.

501.15(A)(4) Ex 2 after the conduit emerges from grade.

33. Class 2, Division 1 locations, switches, circuit breakers, motor controllers, and fuses, including push buttons, relays, and similar devices shall be provided with enclosures that are ________.

502.115(A) identified for the location

26. In class 2, Division 1 locations, control transformers, solenoids, impedance coils, resistors, and any overcurrent device or switching mechanism associated with them, she'll have enclosures identified for blank.

502.120(A) Class II, Division 1 locations

47. Where LFMC is used in a class 3 location as permitted in 503.10, it shall ________.

503.30(B) Including equipment bonding jumper of the wire type in accordance with 250.102

19. The continuity of the equipment grounding conductors at carnivals, circuses, fairs, and similar events shall be verified each time that portable electrical equipment is connected.

525.32 TRUE

8. Feeder conductors to a mobile home shall consist of a _________.

550.33(A)(1) listed cord, permanently installed feeder consisting of four color-coded, insulated conductors

31. Listed cord sets or adapters that incorporate listed GFCI protection can be used to meet the GFCI requirement with portable generators manufactured prior to ________.

590.2(A) January 1, 2011

28. Except as specifically Modified by article 590, all other code requirements for permanent wiring apply to Temporary wiring installation

590.2(A) TRUE

44. Multiwire Branch circuits for a temporary wiring shall be provided with a means to disconnect simultaneously all ________ conductors where the branch circuit originates.

590.4(E) ungrounded

12. Flexible cords and flexible cables used for temporary wiring shall ______.

590.4(H) all of these: be protected from accidental damage, be protected where passing through doorways, avoid sharp corners and projections.

42. The branch circuit supplying submersible Fountain Equipment Shelby ________, unless the equipment is listed for operation at not more than 15 volts

680.51(A) GFCI protected

20. Flexible cords for fixed or stationary pool equipment, other than underwater luminaires, for a permanently installed pool shall ______.

680.8(A) and (B) all of these: not exceed 3 ft, have a copper equipment grounding conductor not smaller than 12 AWG, terminate in a grounding-type attachment plug.

41. Insulated overhead service conductors that are cabled together with a bare messenger and operate at not over 750 volts to ground shall maintain a ________ clearance in any direction to the water level of swimming pools, fountains and similar installations.

680.9(A) and Table 680.9(A) 22 1/2 ft

49. The conductor's connected to the direct current input of an inverter for PV systems form the ________.

690.2 Inverter Input Circuit inverter input circuit

23. For PV systems, the circuits between modules and from modules to the common connection points of the direct current system are known as the " photovoltaic blank circuit."

690.2 Photovoltaic Source C circuit source

36. When do overcurrent protection is provided for the PV circuit, and assumed overcurrent device rating in accordance with 690.9(B) shall be used to size the equipment grounding conductor in accordance with ________.

690.45 Table 250.122

4. Power to fire pump motors shall be supplied by a reliable source of power that has the capacity to carry the _______.

695.3(A) all of these: sum of locked-rotor current of the fire pump motor(s), locked-rotor current of the pressure maintenance pump motors, full-load current of any associated fire pump equipment

9. A written record shall be kept of required tests and maintenance on legally required standby systems.

701.3(D) TRUE

22. A transfer switch shall be required for all fixed or portable optional standby Power Systems for buildings or structures at which an electric utility is either the normal or standby Source, unless permitted by an exception

702.5 TRUE

2. The power sources for limited-power circuits in 725.121(A)(3) and limited-power circuits for listed audio/video information technology (equipment) and listed industrial equipment in 725.121(A)(4) shall have a label indicating the maximum _______ output for each connection point and is effective on January 1, 2018.

725.121© voltage and current

38. Equipment supplying Class 2 or class three circuits Shelby durably marked where plainly visible to indicate ________.

725.124 each circuit that is a Class 2 or Class 3 circuit

17. If remote-control, signaling, and power-limited circuits are installed in a raceway that is subjected to different temperatures, and where condensation is known to be a problem, the raceway shall be filled with an approved material that will prevent the circulation of warm air to a colder section of the raceway. An explosionproof seal _______.

725.3(H) and 300.7(A) isn't required for this purpose.

18. Outdoor antennas and lead-in conductors shall be securely supported and the lead-in conductors shall be securely attached to the antenna, but they shall not be attached to the electric service mast.

810.12 TRUE

29. CATV coaxial cable can deliver power to equipment that is directly associated with the radio frequency distribution system if the voltage is not over blank and if the current Supply is from a Transformer or other power-limiting device

820.15 60V