CSAP 2, level 2
4. Match the percent of cross-sectional area of conduit and tubing with the number of conductors permitted.
53%=1, 31%=2, 40%=12
10. Stubbing down requires making a void on top of the form prior to pouring concrete so that the ENT system can be extended above the slab ceiling.
False
11. The proper method of cutting LFMC to prevent leaks and to create a proper grounding connection is for the Electrical Worker to reverse-twist the conduit so the corrugations splay apart while bending it to break the PVC jacketing. Then, using side cutters, the Electrical Worker should cut the frayed windings to break it free from the roll.
False
14. The proper placement of a sealing ring is between the locknut and the enclosure to prevent liquids from entering the enclosure.
False
16. Listed metal outlet boxes are not permitted to be used with ENT.
False
19. LFNC-C liquidtight fittings are interchangeable with other types of liquidtight conduit.
False
2. Conduit fittings marked "raintight" or "wet locations" are automatically considered "liquidtight."
False
30. Type letter MTW has an application provision as machine tool wiring and has a maximum operating temperature of 60°C where used in dry locations.
False
5. ENT is permitted to be used in all plenum applications.
False
9. For the purpose of determining the number of floors in a building pertaining to ENT, the first floor of a building shall be the floor which has 80% or more of the exterior wall surface area level with or above finished grade.
False
1. Match the title to the part of Article 310.
General=Part I, Installation=Part III, Construction=Part II
8. Match the conduit or raceway with the associated NEC Article.
Rigid Polyvinyl Chloride Conduit=352, NUCC=354, IMC=342, LFNC=356, Rigid Metal Conduit=344
17. The illustrated installation is made with direct burial cable protected by a 120-volt, 20-ampere GFCI breaker. The minimum burial depth is ? .
b. 12"
24. A busway is defined in the NEC as a raceway consisting of a metal enclosure containing field-mounted bare or insulated conductors, which are usually copper or aluminum bars, rods, or tubes.
b. False, 368.2
31. Spliced or reinsulated conductors are permitted in a cellular metal floor raceway where an outlet is abandoned on loop wiring.
b. False, 374.58
5. The acronym "LFMC" stands for ? .
b. Liquidtight Flexible Metal Conduit
18. The requirement that all cut ends of PVC conduit be trimmed to remove rough edges is contained within ? of Article 352.
b. Part II
9. The bending radius of Type AC, Type IGS, Type MI, and Type TC cable is addressed in which Part of their respective articles?
b. Part II
27. Which Part of Article 358 addresses reaming and threading?
b. Part II, 358.28
21. Which NEC Section addresses how bends are to be made in PVC conduit, including field bends?
b. Section 352.24
23. What is required to be installed on all enclosures containing conductors operating at over 1000 volts, nominal, to prevent accidental contact with energized parts or physical damage to parts or insulation?
b. Suitable covers, 300.31
1. The metric designators and trade sizes are for identification purposes only and are not actual dimensions, as pointed out in the note to NEC ? .
b. Table 300.1(C)
10. The ground cone is the main link for ? .
b. grounding and bonding between the conduit and fitting
15. Transitioning from rigid metal conduit (RMC) to LFMC using ? is an approved method.
b. listed transition connectors
35. Where a cable-type wiring method is installed through bored holes in joists and rafters, holes are generally required to be bored so that the edge of the hole is at least ? from the nearest edge of the wood member.
c. 1 1/4", 300.4(A)(1)
4. When a hole is bored in a wood joist for the installation of Type NM cable, the nearest edge of the hole shall generally not be closer than ? to the nearest edge of the joist.
c. 1 1/4", 300.4(A)(1)
28. Type THHW has a maximum operating temperature of 75°C in a wet location, and ? in a dry location.
c. 90°C
20. Liquidtight fittings listed for use with liquidtight flexible metal conduit may also be listed for use with liquidtight flexible nonmetallic conduit Type LFNC-B when these fittings are marked ? .
c. LFNC-B
9. ? of Articles 384, 376, and 360 addresses construction specifications.
c. Part III
12. Which Section in the NEC provides the general requirement that conduits and raceways are required to be protected from being subjected to physical damage?
c. Section 300.4
8. Type FCC cable is defined in what section in the NEC?
c. Section 324.2
17. Where the number of current-carrying conductors in a raceway or cable exceeds three, or where single conductors or multiconductor cables are installed without maintaining spacing for a continuous length longer than 24 inches and are not installed in raceways, the allowable ampacity of each conductor shall be reduced as shown in which of the following, when the conductors are rated 0 to 2,000 volts?
c. Table 310.15(C)(1)
19. Expansion fittings for PVC conduit are required to be provided to compensate for thermal expansion and contraction where the length change, in accordance with ? , is expected to be six millimeters (1/4 inch) or greater in a straight run between securely mounted items such as boxes, cabinets, elbows, or other conduit terminations.
c. Table 352.44, 352.44
9. Gland nuts are often the "landing zone" for fluids. The design of the gland nut will greatly affect its ability to shed anything that comes in contact with it. The best design for a gland nut to shed liquids is to ? .
c. have rounded corners
12. The sealing ring is the front-line defense for stopping ? .
c. liquids
18. In both exposed and concealed locations where ENT is installed through bored holes in joists, rafters, or wood members, holes shall be bored so that the edge of the hole is not less than ? from the nearest edge of the wood member. Where this distance cannot be maintained, the cable or raceway shall be protected from penetration by screws or nails by a steel plate or bushing, at least 1.6 millimeters (1/16 inch) thick, and of appropriate length and width installed to cover the area of the wiring.
d. 1 1/4"
12. When 3/0 AWG aluminum conductors are installed in a vertical raceway, they shall be supported at intervals not greater than ? .
d. 180', Table 300.19(A)
17. A swage-style LFNC-B fitting does not have which of the following component(s)?
d. All of the above
7. ENT is not permitted to be used in which of the following applications?
d. All of the above
7. Insulated conductors and cables used in wet locations must comply with which of the following?
d. Any of the above, 310.10(C)
13. Ampacities for conductors rated 0 to 2,000 volts in ambient temperatures other than those shown in the ampacity tables shall be corrected in accordance with which of the following?
d. Either a. or b.
13. Which statement(s) are true regarding the performance of ENT during a fire?
e. All of the above
6. ENT is permitted to be used in which of the following applications?
e. All of the above
18. Type MC cable is not permitted to be installed in which of the following applications?
e. None of the above, 330.12
23. Where can ENT be used exposed?
e. a., b., and c.
4. ENT is permitted to be installed in buildings exceeding three floors ? .
e. both a. and b.
26. ENT ceiling boxes listed for fixture support are permitted to support a luminaire weighing a maximum of ? .
e. both b. and c.
6. Match the metric designator with the associated conduit trade size.
53=2, 103=4, 155=6
10. Type MC cable is covered in Article 330, is defined in Section 330.30(B), and is required to be secured in accordance with first-level subdivision 330.2.
False
2. Informative Annex C is part of the requirements of the NEC.
False
32. Type UF Cable is permitted to be installed in which of the following locations? I. Underground as direct burial cable II. As service-entrance cable
a. I. only
5. Securing and supporting Type AC, Type FC, Type MC, and Type NM cable is addressed in ? of the article covering these cable assemblies?
a. Part II
2. Article 300 covers general requirements for wiring methods and materials for all wiring installations unless modified by other articles in Chapter 3.
a. True, 300.1(A)
34. Where subject to physical damage, conductors, raceways, and cables shall be protected.
a. True, 300.4
10. Underground cable and conductors installed under a building are generally required to be installed in a raceway.
a. True, 300.5(C)
16. Raceways are required to be provided with expansion, expansion-deflection, or deflection fittings where necessary to compensate for thermal expansion, deflection, and contraction.
a. True, 300.7(B)
15. An insulating bushing or equivalent protection is required between the conductors and the armor of Type AC cable where it terminates.
a. True, 320.40
12. Type MC fittings used to connect Type MC cable to boxes are required to be listed and identified for such use.
a. True, 330.6
28. By definition, service-entrance cable is permitted to be single or multiconductor cable.
a. True, 338.2
30. When an outlet associated with an installation of a cellular concrete floor raceway is discontinued, the sections of circuit conductors supplying the outlet must be removed from the raceway.
a. True, 372.58
25. Special permission must be obtained to allow conductors larger than 1/0 AWG to be installed in a cellular metal floor raceway.
a. True, 374.20
4. By definition, Type MI cable is a factory assembly of one or more conductors insulated with a highly compressed refractory mineral insulation and enclosed in a liquidtight and gastight continuous aluminum or alloy steel sheath.
b. False, 332.2
30. Type USE cable is permitted to be installed for interior wiring.
b. False, 338.12(B)(1)
17. Type HDPE is a rigid nonmetallic raceway, by definition.
b. False, 353.2
15. ? establishes the minimum cover requirements for raceways installed underground containing circuits operating at 0 to 1,000 volts, nominal.
b. Table 300.5
30. Underground cables operating at over 1,000 volts, nominal, must meet the depth requirements of which of the following tables?
b. Table 300.50
20. Type AC cable is installed in a duct specifically fabricated for environmental air. The AC cable is used to connect equipment that requires flexibility.
b. Violation, 300.22(B)
13. Type AC cable is permitted to be installed in ? .
b. dry locations, 320.10
29. Where a raceway containing conductors operating at over 1,000 volts, nominal, enters from an underground system, the end within the building is required to be sealed with a(n) ? compound so as to prevent the entrance of moisture or gases, or it shall be so arranged to prevent moisture from contacting live parts.
b. identified, 300.50(F)
22. A minimum of ? means of securement and support are required on this installation of Type NM cable.
c. 12
18. The illustrated installation is made with a direct burial cable without GFCI protection. The minimum burial depth is ? .
c. 18"
11. Type FCC cables shall be covered with carpet squares not larger than ? when floor mounted.
c. 39.37 in2, 324.41
11. Which of the following conduits or raceways, factory elbows, and associated fittings is/are required to be listed?
e. All of the above
8. A connector body has a preinstalled insulator.
True
5. Match the metric designator with the associated conduit trade size.
21=3/4, 27=1, 35=1 1/4
9. Match the title to the NEC reference associated with the provisions that generally allow conductors of sizes 1/0 AWG and larger to be connected in parallel.
Ampacity=310.10(G)(4), Bonding=310.10(G)(6), Conductor=310.10(G)(2), Equipment=310.10(G)(5), Seperate=310.10(G)(3)
13. Match the minimum cover requirement to the type of underground installation. A direct burial cable. Rigid metal conduit. A 24-volt landscape lighting system.
Direct=24", Rigid=6", 24-volt=18"
3. Match the title with the NEC reference associated with the provisions related to uses permitted for the conductors described in Section 310.4, where they are used in any of the wiring methods covered in Chapter 3 and as specified in their respective tables in the NEC, or as permitted elsewhere in the NEC.
Dry and Damp=310.10(B), Dry=310.10(A), Direct Sunlight=310.10(D), Wet=310.10(C)
31. Match the title to the NEC reference associated with the provisions related to conductor identification.
Equipment=310.6(B), Grounded=310.6(A), Ungrounded=310.6(C)
4. Match the title with the NEC reference associated with the provisions related to Uses Permitted for the conductors described in 310.4, where they are used in any of the wiring methods covered in Chapter 3 and as specified in their respective tables in the NEC, or as permitted elsewhere in the NEC.
Parallel=310.10(G), Corrosive=310.10(F), Direct=310.10(E)
29. Note 5 of Table 310.4(A) indicates to see Section 340.80 for ampacity limitation.
True
29. Smurf tube is another name used by contractors and inspectors for ENT.
True
3. ENT is permitted to be installed exposed in buildings not exceeding three floors where not prohibited by Section 362.12.
True
4. Liquidtight conduit fittings are required to be listed.
True
6. There are three types of liquidtight flexible nonmetallic conduit: LFNC-A, LFNC-B, and LFNC- C.
True
7. A typical LFMC fitting contains five components: gland nut, sealing ring, ground cone, connector body, and locknut.
True
24. ENT is permitted to be used for branch lighting and power circuits above a suspended ceiling, including a lay-in ceiling, as long as this area is not used as an air-handling space.
True
26. The application provision for type letter SIS is switchboard and switchgear wiring only.
True
28. The NEC permits the use of ENT to be installed beneath a raised floor when used for information technology equipment.
True
1. Part I of Article 300 provides general requirements; Part II covers the requirements for over 1,000 volts, nominal.
True
11. For cables that have elliptical cross-sections, the cross-sectional area calculation for wire fill shall be based upon the major diameter of the ellipse as a circle diameter.
True
12. Listed rigid nonmetallic conduit (PVC) fittings, such as couplings and male terminal adapters, can be solvent-cemented onto ENT as long as the solvent cement being used is approved for use with ENT.
True
13. Due to manufacturing processes, threading of a connector body cannot be achieved fully to the shoulder of the body. The locknut should have a good "dish" design to bridge this gap to ensure proper sealing, grounding, and bonding.
True
14. The installation of ENT in block walls requires less lifting of blocks by the mason. The pliable construction of ENT allows for bending and threading through the block cavity at a convenient work height.
True
15. ENT can be used in residential applications, commercial applications, schools, condominiums, apartments, and industrial applications.
True
16. Only liquidtight fittings with the marking "LFNC-B" or "FNMC-B" can be used with LFNC-B.
True
17. It is common to use ENT with listed floor boxes when encased in concrete.
True
18. The threads on a LFNC-A liquidtight fitting sleeve are generally left-handed to keep the fitting from backing off when the gland nut (right-handed thread) is tightened.
True
19. Gypsum wallboard 1/2 inch thick maintains a finish rating of 15 minutes.
True
2. A pliable Type ENT raceway is a raceway that can be bent by hand, without the use of any tools.
True
21. When installing ENT through a fire-resistive floor, all openings around the ENT shall be firestopped using approved methods to maintain the fire resistance rating.
True
22. The statement "not subject to physical damage" means the normal activity in the area where the installation is located is such that it would not damage the installation.
True
3. Raceway is defined in the NEC as an enclosed channel designed expressly for holding wires, cables, or busbars, with additional functions as permitted in the Code
True 100
11. The minimum size of conductors for voltage ratings up to and including 2,000 volts shall be ? copper or ? aluminum or copper-clad aluminum, except as permitted elsewhere in the Code.
a. 14 AWG / 12 AWG, 310.3(A)
25. Metallic raceways and associated conductors operating over 1,000 volts, nominal, must be arranged so as to avoid heating of the raceway in accordance with the applicable provisions of Section ? .
a. 300.20, 300.35
5. Which of the following tables provides the allowable ampacities of insulated conductors rated up to and including 2,000 volts, 60°C through 90°C, where not more than three current-carrying conductors are installed in a raceway, cable, or earth (directly buried) based on an ambient temperature of 86°F?
a. 310.16
33. The maximum size conductor recognized for use in Type UF cable is ? .
a. 4/0 AWG, 340.104
21. Type NM cable passes horizontally through the space between two studs in a one-family dwelling. The space between the studs is used as a return air plenum.
a. Acceptable, 300.22(C) Exception
19. Two circuits are installed in the same raceway as shown.
a. Acceptable, 300.3(C)(1)
20. The radius of the curve of the inner edge of a 90° bend in an installation of nonshielded Type MC cable with a smooth sheath and an outside diameter of 3/4 inch is 10 inches.
a. Acceptable, 330.24(A)(1)
2. Part III of the cable assembly articles addresses which of the following?
a. Construction Specifications
6. When insulated conductors or cables are used where exposed to direct rays of the sun, they must be listed, or listed and marked, as being sunlight resistant or be covered with insulating material, such as tape or sleeving, that is listed, or listed and marked, as being sunlight resistant.
a. True, 310.10(D)
8. Conductors used for direct burial applications are required to be a type identified for such use.
a. True, 310.10(E)
15. Where run in parallel in separate cables or raceways, the cables or raceways with conductors are required to have the same number of conductors and shall have the same electrical characteristics.
a. True, 310.10(G)(3)
12. Ampacities for conductors rated 0 to 2,000 volts are permitted to be determined by tables, as provided in 310.15, or under engineering supervision, as provided in 310.14(B).
a. True, 310.14(A)(1)
32. Ampacities for conductors rated 0 to 2,000 volts are to be as specified in the Allowable Ampacity Table 310.16 through Table 310.21 as modified by 310.15(A) through (F). The temperature correction and adjustment factors shall be permitted to be applied to the ampacity for the temperature rating of the conductor if the corrected and adjusted ampacity does not exceed the ampacity for the temperature rating of the termination in accordance with the provisions of 110.14(C).
a. True, 310.15(A)
19. Where bare or covered conductors rated 0 to 2,000 volts are installed with insulated conductors, the temperature rating of the bare or covered conductor shall be equal to the lowest temperature rating of the insulated conductors for the purpose of determining ampacity.
a. True, 310.15(D)
21. In a 3-wire circuit consisting of two phase conductors and the neutral conductor of a 4-wire, 3-phase, wye-connected system, a common conductor carries approximately the same current as the line-to-neutral load currents of the other conductors and shall be counted when applying the provisions of NEC 310.15(C)(1) where the conductors are rated 0 to 2,000 volts.
a. True, 310.15(E)(2)
22. On a 4-wire, 3-phase wye circuit where the major portion of the load consists of nonlinear loads, the neutral conductor shall be considered a current-carrying conductor where the conductors are rated 0 to 2,000 volts.
a. True, 310.15(E)(3)
16. Type AC cable must have an armor of flexible metal tape and an internal bonding strip of copper or aluminum in intimate contact with the armor for its entire length.
a. True, 320.100
1. Electrical nonmetallic tubing is defined in the NEC as a nonmetallic, pliable, corrugated raceway of circular cross-section with integral or associated couplings, connectors, and fittings for the installation of electrical conductors. ENT is composed of a material that is resistant to moisture and chemical atmospheres and is flame retardant.
a. True, 362.2
25. The trade name for type letter THHN is ? .
a. heat-resistant thermoplastic
1. A conduit fitting that has been evaluated and listed to prevent the ingress of cutting fluids is marked ? .
a. liquidtight
29. Type USE cable is identified for overhead use and is required to have a flame-retardant covering.
b. False, 338.2
20. ENT is permitted to be used in assembly occupancies when encased in not less than ? of concrete.
b. 2", 518.4(A)
1. The cable assembly articles are each divided into how many parts?
b. 3
25. ENT shall be securely fastened at intervals not exceeding ? . In addition, ENT shall be securely fastened in place within ? of each outlet box, device box, junction box, cabinet, or fitting where it terminates.
b. 3' / 3', 362.30(A)
23. Ampacities for conductors rated 2,001 to 35,000 volts are required to be as specified in Table 311.60(C)(67) through Table 311.60(C)(86). Ampacities for ambient temperatures other than those specified in these ampacity tables shall be corrected in accordance with which one of the following NEC references?
b. 311.60(D)(4), 311.60(C)
27. How many 90° bends in a length of ENT are permitted between the panel and a box?
b. 4, 362.26
27. The maximum operating temperature of type letter UF with moisture-resistant insulation is ? .
b. 60°C
18. Where raceways or cables are exposed to direct sunlight on or above rooftops, raceways or cables installed a minimum of ? above the roof to the bottom of the raceway or cable do not require the 33°C adder to determine the applicable ambient temperature.
b. 7/8", 310.15(B)(2)
33. Where installed in raceways, conductors ? and larger, when not specifically permitted or required elsewhere in the NEC to be solid, are required to be stranded.
b. 8 AWG, 310.3(C)
24. The insulation thickness of 2/0 AWG Type USE cable is ? .
b. 80 mils
3. Which NEC articles pertain to liquidtight flexible metal conduit and liquidtight flexible nonmetallic conduit, respectively?
b. Articles 350 and 356
2. The scope of Article 310 covers fixture wires, flexible cords, and cables.
b. False, 310.1
16. Where run in parallel, conductors of one phase, polarity, neutral, grounded circuit conductor, or equipment grounding conductor are required to have the same physical characteristics as those of another phase, polarity, neutral, grounded circuit conductor, or equipment grounding conductor.
b. False, 310.10(G)(3)
10. Where more than one ampacity applies for a given circuit length for conductors rated 0 to 2,000 volts, the highest value is generally required to be used.
b. False, 310.14(A)(2)
20. A neutral conductor rated 0 to 2,000 volts that carries only the unbalanced current from other conductors of the same circuit shall be required to be counted when applying the provisions of NEC 310.15(C)(1).
b. False, 310.15(E)(1)
7. The cover for a direct burial conduit is the shortest distance between a point on the ? of the conduit and finished grade.
c. top surface
8. ENT that is likely to be penetrated by nails or screws in metal framing members shall generally be protected by a(n) ? .
d. any of the above, 300.4(B)(2)
14. Which of the following applies to conductors in each phase, polarity, neutral, grounded circuit conductor, equipment grounding conductor, or equipment bonding jumper where conductors are run in parallel?
f. Must be all of the above, 310.10(G)(2)
21. The radius of the curve of the inner edge of a 90° bend in an installation of a nonshielded Type MC cable with interlocking type armor and an outside diameter of 1 1/8 inches is 10 inches.
a. Acceptable, 330.24(B)
26. No conductor larger than that for which the raceway is designed is permitted to be installed in a surface metal raceway.
a. True, 386.21
28. Underfloor raceway is defined in the NEC as a raceway and associated components designed and intended for installation beneath or flush with the surface of a floor for the installation of cables and electrical conductors.
a. True, 390.2
26. Temporary wiring is required to be removed immediately upon completion of construction or other purpose for which the wiring was installed.
a. True, 590.3(D)
31. Underground direct-buried cables operating at over 1,000 volts, nominal, are required to have their location identified by a warning ribbon that is placed in the trench at least ? above the cables where they are not encased or protected by concrete and are buried 30 inches or more below grade.
b. 12", Table 300.50
10. Article 368 is comprised of how many parts?
b. 4
22. There cannot be more than ? of bends between pull points in a run of LFMC.
d. 360°, 350.26
25. The radius of the curve of the inner edge of a 90° bend in nonmetallic-sheathed cable shall not be less than ? times the cable diameter.
d. 5, 334.24
9. When conductors are pulled to a 12" × 12" × 4" junction box, a minimum of ? of free conductor shall generally be left for splices or the connection of luminaires or devices.
d. 6", 300.14
19. In general, Type MC cable is required to be secured at intervals not exceeding ? .
d. 6', 330.30(B)
11. When 300 kcmil copper conductors are installed in a vertical raceway, they shall be supported at intervals not greater than ? .
d. 60', Table 300.19(A)
27. Metallic shielding components, such as tapes, wires, or braids, or combinations thereof, are required to be connected to which of the following?
d. Any of the above, 300.40
7. In which of the following installations is Type MI cable permitted? I. Branch circuits or feeders II. Outdoors or indoors III. Wet or dry locations
d. I., II., and III.
6. When all of the following conductors are used for a 120/208-volt, multiwire branch circuit, which of the conductors are generally required to be installed in the same raceway? I. Equipment bonding conductors II. Grounded conductors III. Phase conductors
d. I., II., and III., 300.3(B)
22. What is the section number of the second Section of Part II of Article 300?
d. Section 300.32
26. What Section addresses the requirement for a flame-resistant braid for exposed runs of braid-covered insulated conductors operating at over 1,000 volts, nominal?
d. Section 300.39
27. On construction sites, where all of the circuit conductors are from nonmetallic multiconductor cords or cable assemblies and the equipment grounding continuity is maintained, a box is not required for splices or junction connections for temporary installations.
a. True, 590.4(G) Exception No. 1
24. Shielded conductors, other than multiconductor or multiplexed single-conductor cables, operating at over 1000 volts, nominal, must not be bent to a radius less than ? times the overall diameter during or after installation.
b. 12, 300.34
14. A minimum of ? means of securement are required on the following installation of Type AC cable where installed on or across framing members.
b. 3
23. Uses permitted and uses not permitted for nonmetallic-sheathed cable are addressed in which of the following sections of Article 334?
b. 334.10 and 334.12
17. Type AC cable is permitted to be ? in length from the last point of support to the point of connection to electrical equipment where the cable and point of connection are within an accessible ceiling.
b. 6', 320.30(D)(3)
24. The allowable ampacity of Type NM cable cannot exceed that of a ? rated conductor.
b. 60°C, 334.80
31. The ampacity of Type UF cable shall be that of ? conductors in accordance with Section 310.15.
b. 60°C, 340.80
15. Direct-buried conductors and cables emerging from grade must generally be protected for a minimum distance above grade of ? and are not required to be protected more than ? below grade.
b. 8' / 18", 300.5(D)(1)
3. Article 300 applies to conductors that form an integral part of equipment.
b. False, 300.1(B)
14. In multiwire branch circuits, the continuity of the grounded conductor is permitted to depend on device connections on a receptacle where the removal of the receptacle would interrupt the continuity.
b. False, 300.13(B)
8. Conductors that are not spliced or terminated at a junction box must have at least three inches of conductor available when the opening of the junction box is four inches by four inches.
b. False, 300.14 Exception
16. Openings around electrical penetrations into or through fire-resistant rated walls, partitions, floors, or ceilings must be firestopped using a listed compound to maintain the fire-resistance rating.
b. False, 300.21
5. Equipment grounding conductors (EGCs) shall not be permitted to be installed on the outside of a raceway.
b. False, 300.3(B)(2)
29. The combined cross-sectional area of all conductors or cables installed in an underfloor raceway cannot exceed ? of the interior cross-sectional area of the raceway.
c. 40%, 390.22
13. Which two conduit or raceway types are exempt from the provision that generally requires raceways installed under metal-corrugated sheet roof decking to be at least 11/2 inches from the lowest surface of the roof decking to the raceway?
c. Type IMC and Type RMC, 300.4(E) Exception
14. Which conduit or raceway type is not exempt from the provision that generally requires raceways installed through bored holes through wood members that are not at least 11/4 inches from the wood member to be protected by a steel plate?
c. Type LFNC, 300.4(A)(1) Exception No. 1
6. Uses permitted for Type TC, Type UF, Type USE, and Type MV is addressed in which Section of these cable assembly articles?
c. XXX.10
3. If a cable assembly is required to be listed, it will be addressed in which section of a cable assembly article?
c. XXX.6
7. Which of the following is the maximum number of 12 AWG THHN conductors permitted in trade size 1 EMT?
d. 26
20. Trade size 1 PVC conduit must generally be securely fastened within ? of each junction box.
d. 3'
28. What first-level subdivision addresses protection from damage for conductors emerging from the ground operating over 1,000 volts, nominal?
d. 300.50(C)
23. Grounding and bonding requirements for FMC and LFMC are located in Part II, Installation in Articles 348 and 350, respectively. Identify the Section numbers where these requirements are located in their respective article.
d. Sections 348.60 and 350.60
