2024 Edition

Journeyman Electrician - Test 1 - 2014 NEC

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1.	For other than one-and two-family dwellings, when building a new electrical service, at least one (1) 125-volt, single-phase, 15- or 20-ampere-rated receptacle outlet shall be located within at LEAST _____ of the electrical service equipment.
		6 feet
		10 feet
		25 feet
		50 feet
Section 210.64 indicates the required receptacle is to be installed within 50 feet of the electrical service equipment. This rule was established because at service equipment, there is sometimes a need for connecting portable electrical data acquisition equipment for the qualitative analysis of the electrical system. Also, test equipment is frequently used for monitoring and servicing electrical equipment about service areas. Incorrect answer. Please choose another answer.

2.	The ampacity of a conductor is defined by the NEC to be the maximum current, in amperes, a conductor can carry continuously under the conditions of use without exceeding ______.
		it's temperature rating
		the allowable voltage drop limitations
		its melting point
		its rated voltage
You will find this definition in Article 100 of the NEC. To get a better understanding of ampacity, perhaps we might consider it as current-carrying capacity, or the maximum amperage a conductor can carry continuously without damaging the conductor and/or its insulation. When determining the ampacity of a conductor, or sizing a conductor, some factors needed to be taken into consideration are, the ambient temperature, the number of current-carrying conductors contained in the raceway or cable, the temperature rating of the terminations and the environment the conductor will be subject to. Incorrect answer. Please choose another answer.

3.	Disconnect switch enclosure installed in a Class II, Division 2 location shall be listed as _____.
		dusttight
		heavy duty type
		raintight
		general duty type
As per Section 502.10(B)(4) boxes and fittings need to be dusttight to prevent combustible dust from entering dust-ignitionproof enclosures through the raceway or boxes. Incorrect answer. Please choose another answer.

4.	The interior of enclosures or raceways installed underground shall be considered as a _____ location.
		dry
		damp
		hazardous
		wet
Section 300.5(B) requires that the inside of all raceways and enclosures installed underground be classified as a wet location because water and moisture may enter the raceway and condensation may occur. Insulated conductors installed in such locations must be listed for use in wet locations. Incorrect answer. Please choose another answer.

5.	Determine the MAXIMUM allowable current-carrying capacity of four (4) size 1/0 AWG THW copper current-carrying conductors installed in a common raceway with an ambient temperature of 86 degrees F.
		150 amperes
		105 amperes
		112 amperes
		120 amperes
To solve this problem, first locate the wire size on the left side of Table 310.15(B)(16) and look to the right under the copper THW column, with a temperature rating of 75C, and note the ampacity of the wire is 150 amperes. The table is based on an ambient temperature of 86C and not more than three current-carrying conductors in the raceway. This question states four (4) current-carrying conductors are in the raceway so we must apply the adjustment factor as shown in Table 310.15(B)(3)(a) as follows: Size 1/0 AWG THW ampacity = 150 amperes before derating 150 amperes x 80% (adjustment factor) = 120 amperes Incorrect answer. Please choose another answer.

6.	The NEC defines a continuous load to be a load where the maximum current on the circuit is expected to continue for at LEAST____ hours or more.
		three
		four
		six
		eight
This definition is addressed in Article 100. Examples of continuous loads are lighting loads for commercial and industrial occupancies that are expected to be operated continuously for at least three (3) hours. Examples of noncontinuous loads are general-use receptacle outlets provided for commercial, industrial and residential occupancies and general-purpose lighting loads for residential occupancies. These types of loads are normally not in continuous use for 3 hours or more. Incorrect answer. Please choose another answer.

7.	The service disconnecting means for each electrical service shall consist of NOT more than _____ switches or circuit breakers, mounted in a single enclosure or in a group of separate enclosures.
		one
		two
		four
		six
Section 230.71(A) mandates a building or structure may have not more than six (6) disconnecting means for the service conductors that supply the building or structure. One-set of service-entrance conductors, either overhead or underground, is permitted to supply two (2) to six (6) service disconnects instead of a single main disconnect. Incorrect answer. Please choose another answer.

8.	Given: You have determined a conductor has a computed allowable ampacity of 75 amperes. What is the MAXIMUM standard ampere rating of the overcurrent protection device the NEC® permits to protect this circuit where this is not a motor circuit or part of a multioutlet branch circuit supplying more than one receptacle?
		70 amperes
		75 amperes
		80 amperes
		85 amperes
Section 240.6(A) lists the standard ampere ratings of fuses and circuit breakers. Where the ampacity of a conductor, 800 amperes or less, does not correspond with a standard rating as listed in Section 240.6(A)(1), as per 240.4(B) you are permitted to go up to the next standard size if the conductors being protected are not part of a branch circuit supplying more than one receptacle. Incorrect answer. Please choose another answer.

9.	A 208-volt, 3-phase, 50 hp, squirrel-cage, continuous-duty, ac motor has a full-load running current rating of _____.
		130 amperes
		143 amperes
		162 amperes
		195 amperes
Table 430.250 reflects the full-load current, in amperes, for three-phase ac induction-type motors running at usual speed with normal torque characteristics. This table is based on the most used induction motors in use. When applying this table, be sure and get on the correct horsepower and the corresponding voltage. Incorrect answer. Please choose another answer.

10.	What is the MAXIMUM distance that a disconnect switch is permitted to be located from the operator's station for a portable carnival ride?
		6 feet
		10 feet
		25 feet
		50 feet
The purpose of this rule, Section 525.21(A), is so that the disconnecting means is located readily accessible to the operator, including when the ride is in operation. The operator can shut the ride down quickly when needed. Incorrect answer. Please choose another answer.

11.	Determine the MINIMUM trade size electrical metallic tubing (EMT) required to enclose eight (8) size 6 AWG copper conductors with THHW insulation, when installed in a 50 foot conduit run.
		1 in.
		1 1/4 in.
		1 1/2 in.
		2 in.
Annex C, Table C.1 is to be applied where the EMT, more than 24 inches in length, encloses conductors of the same size, with the same type of insulation. When referring to the tables in Annex C, be careful to select the correct raceway and conductor insulation and size. Incorrect answer. Please choose another answer.

12.	Where exceptions are not applicable, when a feeder supplies a continuous load of 240 amperes, the overcurrent protection device protecting this circuit shall have a rating of at LEAST _____.
		240 amperes
		300 amperes
		250 amperes
		275 amperes
To solve this problem refer to Section 215.3 which tells us the overcurrent protection is to be sized at not less than 125% of the continuous load to be served. 240 amperes x 125% = 300 amperes Incorrect answer. Please choose another answer.

13.	Liquidtight flexible metal conduit (LFMC) shall be securely fastened WITHIN _____ of each box or other conduit termination.
		4 feet
		3 feet
		12 inches
		18 inches
This rule as indicated in Section 350.30(A) is in place to insure the LFMC is supported at intervals where it will not sag and perhaps pull apart. Incorrect answer. Please choose another answer.

14.	Where a pull box to be installed will contain conductors of size 4 AWG and larger, and a straight pull of the conductors is to be made, the length of the box shall NOT be less than ____times the trade diameter of the largest conduit entering the box.
		six
		four
		eight
		twelve
Section 314.28(A)(1) applies to minimum dimensions of pull and junction boxes housing conductors of size 4 AWG or larger. The pull and junction boxes are to be sized in reference to the size of the raceways that enter and exit the pull and junction boxes. Incorrect answer. Please choose another answer.

15.	Conduit nipples not over 24 inches in length may be filled to a MAXIMUM of _____ of their cross-sectional area.
		30 percent
		40 percent
		54 percent
		60 percent
Chapter 9, Informational Note Number 4 to the tables allows a permitted conduit or tubing fill of 60% of their cross-sectional area where the conduit or tubing is not more than 24 inches in length. This is permitted because short sections of the raceways readily permit easy pulling of the conductors and abrasion will not likely occur. Incorrect answer. Please choose another answer.

16.	Determine the MAXIMUM number of size 14 AWG THHN conductors permitted to be installed in a trade size 3/8 in. flexible metal conduit (FMC) that contains a bare size 14 AWG grounding conductor, when the FMC has external fittings.
		two
		three
		four
		five
When determining the maximum number of conductors permitted in trade size 3/8 in. flexible metal conduit, refer to Table 348.22. The note at the bottom of the table allows an additional equipment grounding conductor of the same size. Incorrect answer. Please choose another answer.

17.	Which one of the following listed conduits does the NEC® permit to enclose conductors supplying wet-niche underwater pool luminaires?
		electrical metallic tubing (EMT)
		electrical nonmetallic tubing (ENT)
		galvanized rigid metal conduit (RMC)
		Schedule 40 rigid polyvinyl chloride conduit (PVC)
Of the choices given, you should have selected nonmetallic conduit (PVC). Because of the chlorine present, Section 680.23(B)(2)(a) restricts metal conduit for this installation to be of brass or other approved corrosion- resistant material. Section 680.23(B)(2)(b) permits nonmetallic conduit to be used for this installation. Incorrect answer. Please choose another answer.

18.	Underground wiring is not permitted under a permanently installed swimming pool or within _____ of the pool, unless the wiring is supplying the associated pool equipment.
		10 feet
		6 feet
		5 feet
		8 feet
Section 680.10 allows wiring within 5 ft. of the inside walls of the pool under two conditions. One condition is, where the wiring is associated with the pool-associated equipment such as an underwater luminaire. Another condition is, where the space is limited such as restricted property lines. Incorrect answer. Please choose another answer.

19.	Which of the following listed types of batteries is NOT permitted for use as a source of power for emergency systems?
		automotive
		lead acid type
		alkali type
		All of the above.
Automotive-type batteries are not permitted for use as source of supply for emergency systems because they are not designed to hold a charge for extended lengths of time. See Section 700.12(A). Incorrect answer. Please choose another answer.

20.	In regard to electric space heating equipment, heating cables shall be furnished complete with factory-assembled nonheating leads at LEAST _____ in length.
		12 inches
		3 feet
		4 feet
		7 feet
The nonheating leads of electric space heating cables are required to be at least 7 ft. in length in order to terminate the conductors to the power source. See Section 424.34. Incorrect answer. Please choose another answer.

21.	In guest rooms of hotels, motels, and sleeping rooms of dorms a MINIMUM of _____ general purpose receptacles installed in the room is/are required to be readily accessible.
		one
		two
		three
		all
Section 210.60(B) requires at least two (2) general-use receptacle outlets in guest rooms of hotels, motels and sleeping rooms of dorms to be readily accessible. Because of the furniture layout in these locations, many times the receptacle outlets are behind the furniture and rendered inaccessible. It is common practice for businessmen and students to use laptop computers and other plug-in devices in these rooms. The NEC requires that two receptacle outlets be available without requiring the movement of furniture to access those receptacles. Incorrect answer. Please choose another answer.

22.	A listed _____ shall be installed in or on all emergency systems switchboards and panelboards.
		surge protective device (SPD)
		ground-fault circuit interrupter (GFCI)
		arc-fault circuit interrupter (AFCI)
		leakage-current detector-interrupter (LCDI)
Section 700.8 requires emergency systems panelboards and switchboards to be equipped with a listed surge protective device (SPD) to limit transient voltages by diverting or limiting surge current. Surge protection is required for emergency systems since electronics monitor and control several aspects of the building involving such components as fire alarm systems, emergency and exit lighting, generator and transfer equipment, and automatic control relays. A spike or surge in current that goes unarrested can cause great damage to such components. Incorrect answer. Please choose another answer.

23.	Where a size 4 AWG or larger conductor enters a panelboard, which of the following must be provided?
		A bonding jumper.
		A grounding clip.
		An insulated bushing.
		An insulated grounding conductor.
Heavy conductors and cables tend to stress the conductor insulation where the conductors and cables enter or exit the raceway. The intent of Section 300.4(G) is to reduce that stress and requires an insulated bushing or smooth rounded entries at raceway and terminations to reduce the risk of insulation failure at conductor stress points. Incorrect answer. Please choose another answer.

24.	Class _____ locations are those that are hazardous because of the presence of easily ignitible fibers or where materials producing combustible flyings are handled, but in which such fibers/flyings are not likely to be in suspension in the air in quantities sufficient to produce ignitible mixtures.
		I
		II
		III
		IV
Fibers/flyings are hazardous not only because they are easily ignited, but also because flames spread through them quickly. Examples of Class III locations are textile mills, sawmills, plywood manufacturing plants, and other woodworking facilities. Refer to Section 500.5(D). Incorrect answer. Please choose another answer.

25.	A single-phase, 240-volt, 15 kVA standby generator may be loaded to a MAXIMUM of _____ per line.
		62.50 amperes
		31.25 amperes
		41.66 amperes
		52.50 amperes
To solve this problem apply the single-phase current formula: I = P E 15 kVA x 1,000 = 15,000 = 62.50 amperes 240 volts 240 Incorrect answer. Please choose another answer.

26.	All motors shall be considered as _____ unless the nature of the apparatus it drives is such that the motor will not operate continuously.
		continuous duty
		short-time duty
		intermittent duty
		periodic duty
A motor used for duty-cycle service (short-time, intermittent, periodic, or varying) is not considered to be for continuous duty because the motor will not operate continuously due to the nature of the apparatus or machinery it drives. In compliance with Section 430.33, all other motors shall be considered to be for continuous duty. Incorrect answer. Please choose another answer.

27.	Where the motor controller also serves as a disconnecting means, it shall open all _____ conductors to the motor.
		grounded
		neutral
		grounding
		ungrounded
As indicated in the exception to Section 430.84, a switch or circuit breaker is permitted to be used as both the controller and disconnecting means. If a switch or circuit breaker is used as a controller, they must be protected by short-circuit, branch-circuit, and ground-fault protective devices (fuses or circuit breakers), which ensure that all ungrounded conductors will be opened simultaneously. Incorrect answer. Please choose another answer.

28.	Before demand factors are taken into consideration for commercial buildings, general-purpose receptacle loads are to be computed at NOT less than _____ per outlet.
		100 VA
		120 VA
		150 VA
		180 VA
In accordance with Section 220.14(I), for other than dwelling units, all 125-volt, single-phase, 15- or 20-ampere receptacle outlets shall be calculated at not less than 180 volt-amperes for each single or for each multiple receptacle on one yoke or strap. Incorrect answer. Please choose another answer.

29.	Conductors with ______ insulation have a greater ampacity when used in a dry location compared to when used in a wet location.
		THW
		RHW
		THWN
		THHW
Refer to Table 310.104(A) and notice that conductors with THHW insulation are rated at 75C when used in a wet location and have a rating of 90C when used in a dry location. Next, refer to Table 310.15(B)(16) and note conductors in the 90C column have a greater ampacity than those listed in the 75C column. Incorrect answer. Please choose another answer.

30.	Where a submersible pump is housed in a metal well casing, the well casing shall be _____ the pump circuit equipment grounding conductor.
		isolated from
		connected to
		exothermic welded to
		none of these
The intention of Section 250.112(M) is to prevent a shock hazard that could exist due to a potential difference between the pump, which is grounded to the electrical system ground, and the metal well casing. This grounding and bonding connection also provides a return path for ground-fault current. Incorrect answer. Please choose another answer.

31.	A single-phase, 125-volt receptacle installed to serve a washing machine in the laundry room of a dwelling unit must be installed within at LEAST ______ of the intended location of the appliance.
		6 feet
		4 feet
		3 feet
		10 feet
Section 210.50(C) mandates the receptacle to be located within 6 ft. of the intended location of the appliance to eliminate the use of extension cords which may become frayed and brittle when used for an extended length of time. Incorrect answer. Please choose another answer.

32.	When ambient temperature is not a factor, a size 8 AWG single copper conductor with type FEPB insulation, installed in free air, will have a MAXIMUM allowable ampacity of _____.
		80 amperes
		55 amperes
		45 amperes
		83 amperes
When determining the allowable ampacity of single insulated conductors installed in free air refer to Table 310.15(B)(17). Note that size 8 AWG conductors with type FEPB insulation have a temperature rating of 90C and an allowable ampacity of 80 amperes. Incorrect answer. Please choose another answer.

33.	For the purpose of determining conductor fill in a device box, a single-pole switch and/or a three-way switch is counted as equal to _____ conductor(s), based on the largest conductor connected to the switch.
		zero
		one
		two
		three
The intent of Section 314.16(B)(4) is to prevent overcrowding of conductors and devices installed in device boxes. Devices such as switches, standard receptacles, AFCI receptacles and GFCI receptacles, mounted on a single strap, are to be counted as equal to two (2) conductors, based on the largest conductor connected to the device. Incorrect answer. Please choose another answer.

34.	When determining the required ampacity of the branch-circuit conductors to supply a 3-phase, continuous-duty ac motor, current values given on _____ shall be used.
		the motors nameplate
		Table 430.248 of the NEC
		Table 430.52 of the NEC
		Table 430.250 of the NEC
As per Section 430.6(A)(1), in general, when sizing the conductors, disconnecting means, and overcurrent protection for continuous-duty ac motors, the full-load current values of the motors given in Tables 430.247 through 430.250 shall be used instead of the actual current rating marked on the motor nameplate. Since the question referenced a 3-phase motor, the full-load current values shown on Table 430.250 should be used. Incorrect answer. Please choose another answer.

35.	Three-way and four-way switches shall be wired so that all switching is done _____.
		only in the grounded circuit conductor
		only in the ungrounded circuit conductor
		either in the grounded or ungrounded circuit conductor
		only in the white colored circuit conductor
Section 404.2(A) requires all switching is done only in the ungrounded (hot) circuit conductor and not in the grounded (neutral) conductor when wiring three-way and four-way switches. As per 404.2(B),Ex, switches may only disconnect the grounded circuit where all circuit conductors, grounded and ungrounded are disconnected simultaneously. Incorrect answer. Please choose another answer.

36.	Determine the MAXIMUM number of size 1 AWG XHHW compact conductors permitted in a trade size 3 in., rigid Schedule 40 PVC conduit more than 24 inches long.
		21
		19
		14
		18
When electrical conduit or tubing enclose conductors of the same size, with the same type of insulation, and the conduit or tubing is more than 24 inches in length, application of Annex C, Tables C.1 through C.12(A) is permitted to be used when determining the maximum number of conductors permitted in the conduit or tubing. For this question refer to Annex C, Table C.10(A). When referring to the tables in Annex C, be careful to select the correct raceway, conductor size and insulation. Incorrect answer. Please choose another answer.

37.	Infrared commercial and industrial heating appliances shall have overcurrent protection NOT exceeding _____.
		20 amperes
		40 amperes
		50 amperes
		60 amperes
Infrared commercial and industrial heating appliances are not unlike other commercial-type electric heating appliances where the heating elements, or lamps in this case, are to be subdivided. Each section carrying a number of infrared lampholders shall be considered an appliance and the overcurrent protection shall be rated at not over 50 amperes. Reference Section 422.11(C). Incorrect answer. Please choose another answer.

38.	Class _____ hazardous locations are those in which flammable liquid-produced vapors, or combustible liquid-produced vapors are or may be present in the air in quantities sufficient to produce explosive or ignitible mixtures.
		I
		II
		III
		IV
Class I locations are those locations where the handling or processing of volatile flammable liquids such as gasoline or flammable gases such as propane take place. Gas stations, gasoline plants and propane filling stations are three examples of this type of location. Refer to Section 500.5(B). Incorrect answer. Please choose another answer.

39.	In indoor areas where walls are frequently washed, such as laundries or car washes, metallic conduit and metallic panelboards shall be mounted with a MINIMUM _____ space between the wall and conduit or panelboard when the equipment is installed exposed.
		3/4 in.
		1/2 in.
		1/8 in.
		1/4 in.
According to Section 300.6(D), in commercial or industrial facilities where walls are frequently washed, all metallic boxes, raceways, panelboards and fittings shall be mounted so that there is at least in. airspace between it and the wall to prevent corrosion. Incorrect answer. Please choose another answer.

40.	A branch circuit supplied by size 12 AWG conductors is a _____ rated branch circuit when protected by a 15-ampere circuit breaker.
		20 ampere
		25 ampere
		15 ampere
		10 ampere
The intent of Section 210.3 is to clarify that the ampere rating of a branch circuit is based on the size or rating of the overcurrent protective device and not on the wire size. For example, to limit voltage drop, where a branch circuit is wired with size 10 AWG copper conductors, with an allowable ampacity of 30 amperes, and is protected by a 20-ampere circuit breaker, the circuit is rated 20-amperes. Incorrect answer. Please choose another answer.

41.	What is the MAXIMUM overcurrent protection allowed for the protection of resistance-type electric space heating equipment?
		30 amperes
		40 amperes
		48 amperes
		60 amperes
The reason for limiting the overcurrent protection and subdividing the heating elements of resistance-type electric space heating equipment is to minimize the amount of damaging energy released into the heating elements in the event of a short circuit, thereby reducing the risk of fire. Refer to Section 424.22(B). Incorrect answer. Please choose another answer.

42.	Information technology equipment shall be permitted to be connected to a branch circuit by a listed power-supply cord having a length NOT to exceed _____.
		10 feet
		15 feet
		12 feet
		20 feet
In compliance with Section 645.5(B)(1) the power-supply cords of information technology equipment have a maximum limited length of 15 feet. Note, interconnecting cables of information technology equipment as addressed in Section 645.5(C) are not limited to 15 feet. Incorrect answer. Please choose another answer.

43.	All 125-volt, single-phase, 15- or 20-ampere receptacle outlets installed within at LEAST _____ of the outside edge of a dwelling unit bathtub or shower stall require GFCI protection.
		10 feet
		5 feet
		8 feet
		6 feet
The purpose of Section 210.8(A)(9) is to provide a better level of safety for occupants of a dwelling unit. Many times bathtubs or shower stalls are not always located in an area that meets the Article 100 definition of a bathroom and receptacles located in such areas might not require GFCI protection. An example of such an area would be room adjoining a bedroom with a bathtub or shower stall as the only plumbing fixture in that particular room. Therefore, GFCI protection is required where receptacles are installed within 6 ft. of the outside edge of dwelling unit bathtubs or shower stalls. Incorrect answer. Please choose another answer.

44.	The purpose of an intersystem bonding termination is to provide a means for connecting _____ to the grounding electrode system.
		bonding conductors for communications systems
		the service equipment
		all panelboards and sub-panels in the building
		equipment grounding conductors
Article 100 defines an intersystem bonding termination to be a device that provides a means for connecting bonding conductors for communications systems to the grounding electrode system. This termination device is intended to have a sufficient capacity to provide a convenient means to connect multiple communications systems such as telephone, satellite, and CATV systems to the grounding conductors to the service grounding electrode system. This is a safety measure to prevent occurrences of voltage between the communications system and the power system. Incorrect answer. Please choose another answer.

45.	Direct-buried conductors emerging from grade shall be protected by raceways or covers up to at LEAST _____ above finished grade.
		8 feet
		10 feet
		12 feet
		15 feet
According to Section 300.5(D)(1) direct-buried conductors emerging from from underground are required to be protected from damage up to a height of 8 feet above grade. Use of Schedule 80 rigid PVC and rigid metal conduit are good examples of the type of protection required. Incorrect answer. Please choose another answer.

46.	What is the MINIMUM size wire type equipment grounding conductor for a 50 ampere branch circuit as required by the NEC®?
		12 AWG
		10 AWG
		8 AWG
		6 AWG
As specified in Section 250.122 equipment grounding conductors are to be sized based on the rating or setting of the overcurrent protective device protecting the circuit. Table 250.122 indicates where the overcurrent protective device has a rating of 50 amperes, the equipment grounding conductor is required to be a minimum size 10 AWG copper. Incorrect answer. Please choose another answer.

47.	Disregarding exceptions, all 3-phase, 4-wire, 480Y/277 volt, electrical services, require ground-fault protection for each service disconnecting means when rated for at LEAST _____ or more.
		400 amperes
		600 amperes
		1,000 amperes
		1,500 amperes
The provisions of Section 230.95 first appeared in the 1971 NEC due to the unusually high number of equipment burndowns reported on large capacity 480Y/277 volt solidly grounded services. Ground-fault protection of services does not protect the conductors on the supply side of the service disconnecting means, but it is designed to provide protection from line-to-ground faults that occur on the load side of the disconnecting means. Incorrect answer. Please choose another answer.

48.	Determine the conductor ampacity given the following related information: -conductors are size 500 kcmil copper -conductor insulation is THWN -eight (8) current-carrying conductors are in the raceway -ambient temperature is 125 deg. F -conduit length is 50 feet -installation is a wet location
		178.2 amperes
		199.5 amperes
		294.6 amperes
		380.0 amperes
To determine the allowable ampacity of the size 500 kcmil THWN copper conductors first, find the ampacity of the conductors before derating, which is 380 amperes, as shown on Table 310.15(B)(16), then from Table 310.15(B)(2)(a) apply a temperature correction factor of .67 because of the elevated ambient temperature, next from Table 310.15(B)(3)(a) apply an adjustment factor of .7 due to the number of current-carrying conductors in the raceway. Follow the steps like this: Size 500 KCMIL THWN copper ampacity before derating = 380 amperes 380 amperes x .67 (temp. correction) x .7 (adjustment factor) = 178.22 amperes Incorrect answer. Please choose another answer.

49.	When connecting to luminaires, trade size 3/8 in. flexible metal conduit (FMC) is permitted to enclose tap conductors, provided the length of the FMC does NOT exceed _____ .
		3 feet
		4 feet
		6 feet
		8 feet
Section 348.20(A)(2) makes it clear that trade size 3/8 in. flexible metal conduit (FMC) is permitted to be used as the manufactured or field-installed raceway (not more than 6 ft. in length) to enclose tap conductors between an outlet box and a luminaire. Also, reference Section 410.117(C). Incorrect answer. Please choose another answer.

50.	Where a trade size 1/2 in. rigid metal conduit (RMC) is installed in a Class I location and a 1/2 in. conduit seal is required, the MINIMUM thickness of the sealing compound shall NOT be less than _____.
		3/8 in.
		1/2 in.
		5/8 in.
		3/4 in.
Because it is practically impossible to prevent the communication of gases and gas vapors in threaded conduit joints installed in Class I locations, as per Section 501.15(A)(1), a conduit seal shall be installed within 18 in. of an enclosure. Section 501.15(C)(3) mandates the thickness of sealing compound contained within the sealing fittings shall not be less than 5/8 in. Incorrect answer. Please choose another answer.

51.	In dwelling units, all 125-volt, single-phase, 15- or 20-ampere receptacle outlets installed within six (6) feet of the outside edge of a sink in a laundry room shall be provided with _____.
		a cover listed for use in wet locations
		AFCI protection only
		GFCI protection only
		both GFCI protection and AFCI protection
Section 210.8(A)(10) specifies dwelling unit laundry areas to provide GFCI protection for all 125-volt, single-phase, 15- or 20-ampere receptacles regardless of the presence of a sink or the distance from the sink. Laundry areas typically involve electrical appliances and the presence of water, which increases the risk of electrical shock hazards. This rule is in place as an effective means of reducing the potential for electrical shock hazards for residential occupants. Section 210.12(A) lists the areas of a dwelling unit where 120-volt branch-circuits supplying outlets and devices are required to have AFCI protection; laundry areas are included in this area. The purpose of an arc-fault circuit interrupter is to de-energize the branch circuit when an arc fault is detected; thus, reducing the potential of fire occurring. Incorrect answer. Please choose another answer.

52.	A 30 hp, 480-volt, 3-phase wound-rotor, ac motor has a full-load running current rating of _____.
		27 amperes
		32 amperes
		40 amperes
		50 amperes
The full-load running current values of three-phase, ac motors are shown in Table 430.250. When applying this table be careful to reference the correct horsepower and voltage. Incorrect answer. Please choose another answer.

53.	In regard to residential occupancies, the branch-circuits supplying 125-volt, single-phase, 15- or 20-ampere receptacles in a garage _____.
		is permitted to supply outdoor luminaires where wall-mounted on the garage
		is permitted to supply outdoor receptacles
		is permitted to supply any other outdoor located outlets
		shall not supply any other outlets outside of the garage
As provided in Section 210.52(G), the branch-circuits supplying garage receptacles are permitted to supply only garage outlets. This is an effort to recognize the possibility of electric vehicle (EV) and plug-in hybrid vehicle (PHEV) charging stations being utilized. This rule assists in the ability of the garage receptacle outlets to have enough capacity to handle a load such as an EV charging station. Incorrect answer. Please choose another answer.

54.	When conductors of different systems are installed in the same raceway, one system grounded conductor shall be white or gray. The other system grounded conductor shall be _____ .
		green only
		white with an identifying colored stripe that is green
		white or gray with an identifying colored stripe that is not green
		white only
Section 200.6(D)(2) requires when different electrical systems are installed in the same raceway, one grounded conductor shall be white or gray in color and the other system grounded conductor shall have colored stripes (other than green) for the entire conductor insulation length. This requirement applies only where grounded conductors of different supply systems are installed in a common raceway or enclosure. Where grounded systems of different supply systems are installed in a common enclosure, identifying the grounded conductors associated with one system from the grounded conductors of another system helps to ensure proper system connections. Incorrect answer. Please choose another answer.

55.	What MAXIMUM percent of a metal wireway cross-section may be occupied by splices, taps and conductors at any point?
		20 percent
		30 percent
		40 percent
		75 percent
As per Section 376.56, splices and taps are permitted within a wireway, provided they are accessible. The splices and taps shall not fill the wireway to more than 75 percent at that point. Conductors in wireways can be accessed through hinged or removable covers. Incorrect answer. Please choose another answer.

56.	In an underground installed rigid polyvinyl chloride conduit (PVC) system that consist of 50 feet length between pulling points, what is the MAXIMUM number of bends this run may have?
		four (4) - 90 degree
		six (6) - 90 degree
		four (4) - 120 degree
		two (2) - 90 degree
The purpose of this rule found in Section 352.26 is to limit the number of bends in a conduit run to reduce pulling tension on the conductors and to help ensure easy insertion of the conductors. Incorrect answer. Please choose another answer.

57.	Grounding electrodes made of pipe or conduit shall NOT be smaller than _____ electrical trade size.
		1/2 in.
		3/4 in.
		1 in.
		1 1/2 in.
As indicated in Section 250.52(A)(5)(a), a metallic pipe or conduit is permitted for use as a driven ground rod provided the pipe or conduit is not smaller than trade size in., galvanized or corrosion protected. Incorrect answer. Please choose another answer.

58.	Liquidtight flexible metallic conduit (LFMC) shall NOT be used _____.
		in lengths in excess of 6 feet
		in concealed work
		in hazardous locations
		where subject to physical damage
In accordance with Section 350.12(1), liquidtight flexible metal conduit is not intended for use where subject to physical damage. Incorrect answer. Please choose another answer.

59.	Where exceptions are not to be considered, service conductors installed as open conductors shall have a clearance of NOT less than _____ from windows that are designed to be opened, porches, doors or balconies.
		6 feet
		8 feet
		5 feet
		3 feet
The 3 ft. clearance rule required by Section 230.9(A) applies to open conductors, not to a raceway or to a cable assembly. The intent is to protect the conductors from physical damage and to protect persons from accidental contact with the conductors. Incorrect answer. Please choose another answer.

60.	When terminating conductor sizes 14 AWG through 1 AWG on circuit breakers, the conductors shall be considered to have a temperature rating of ______, unless the circuit breakers are listed and marked otherwise.
		86F
		90C
		75C
		60C
Section 110.14(C)(1)(a) requires that conductor terminations, as well as conductors, be rated for the operating temperature of the circuit. In other words, conductors must be sized to the lowest temperature rating of the wire, circuit breaker terminal, or device. In compliance with Section 110.14(C)(1)(a)(1), when terminating conductor sizes 14 AWG through 1 AWG on circuit breakers, unless the circuit breakers are marked and otherwise listed, the conductors have a temperature rating of 60C. Incorrect answer. Please choose another answer.

61.	Standard trade size 2 in. rigid Schedule 40 polyvinyl chloride conduit (PVC), shall be supported at LEAST every _____.
		3 feet
		5 feet
		6 feet
		8 feet
To ensure PVC conduit is securely supported and stable, Table 352.30 shows trade size 2 in. PVC conduit is to be supported at least every 5 feet. Incorrect answer. Please choose another answer.

62.	For an ac system operating at less than 1000 volts, a main bonding jumper shall connect the grounded conductor(s) to _____.
		each service disconnecting means enclosure
		each meter base only
		the grounding electrode
		all sub-panels
The intent of Section 250.24(C) is to clarify if the utility service supplying the premises wiring system is grounded, the grounded conductor, whether or not is used to supply a load, must be run to the service equipment, be bonded to the equipment and be connected to a grounding electrode system. Incorrect answer. Please choose another answer.

63.	In industrial establishments, where sizes 1/0 AWG through 4/0 AWG single conductor cables are installed in ladder type cable tray, the MAXIMUM allowable rung spacing for the cable tray shall be _____ .
		6 inches
		9 inches
		12 inches
		15 inches
The reason Section 392.10(B)(1)(a) requires the rung spacing of ladder type cable tray containing single conductor cables of sizes 1/0 AWG through 4/0 AWG to be no more than 9 in. is to ensure the cable tray can adequately support the cables. Incorrect answer. Please choose another answer.

64.	A single-gang, 1 in. deep, Type FS box is permitted to house no more than _____ size 12 AWG conductors.
		four
		five
		six
		seven
As indicated in Table 314.16(A) the FS box is permitted to contain no more than six (6) size 12 AWG conductors. Incorrect answer. Please choose another answer.

65.	In general, which of the following receptacle outlets in a commercial kitchen are required by the NEC® to be GFCI protected?
		All 125-volt, 15- or 20-ampere receptacles.
		All 125-volt, 15- or 20-ampere receptacles in wet locations only.
		All receptacles.
		All 125-volt countertop receptacles only.
Section 210.8(B)(2) was initiated because accident data related to electrical incidents in nondwelling kitchens revealed the presence of many hazards, including poorly maintained electrical appliances, damaged electrical cords, and wet floors. Therefore, all 15-and 20-ampere, 125 volt receptacles in nondwelling type kitchens are required to be GFCI protected. Incorrect answer. Please choose another answer.

66.	What is the MINIMUM size copper SE cable with type THHW insulation that may be used as ungrounded (phase) service-entrance conductors for a 150-ampere rated, 120/240-volt, single-phase residential service?
		1/0 AWG
		1 AWG
		2 AWG
		2/0 AWG
Because of the diversity of the loads associated with dwelling units, Section 310.15(B)(7) allows an ampacity reduction of not less than 83% of the ampacity values of Table 310.15(B)(16) to be used to size the service-entrance conductors. 150 amperes x 83% = 124.5 amperes Size 1 AWG copper THHW Type SE cable with an ampacity of 130 amperes should be selected from Table 310.15(B)(16). Incorrect answer. Please choose another answer.

67.	Branch-circuit conductors supplying more than one motor shall have an ampacity of at LEAST_____ of the full-load current rating of the highest rated motor in the group, and 100 percent of the full-load current rating of the other motor(s) in the group.
		25 percent
		80 percent
		100 percent
		125 percent
The requirement of Section 430.24(1)&(2) is based on the principle that the conductors supplying more than one motor should be sized to have an ampacity equal to 125 percent of the full-load current of the highest rated motor in the group, plus the full-load currents of all other motors and all other loads supplied by the conductors. Incorrect answer. Please choose another answer.

68.	What is the MINIMUM size equipment grounding conductor required for a 5 hp, 3-phase, 208-volt motor having 20-ampere rated overload protection and branch-circuit, short-circuit and ground-fault protection rated 30-amperes?
		10 AWG
		14 AWG
		12 AWG
		8 AWG
As per Section 250.122(A), the size of the equipment grounding conductors are based on the size of the overcurrent protective device and selected from Table 250.122 Incorrect answer. Please choose another answer.

69.	Where a circuit breaker serves as the controller for a motor, and the motor is not in sight of the breaker, the NEC® requires which of the following?
		The motor to be less than 2 hp.
		The circuit breaker is to be capable of being locked in the open position.
		The motor to be Code letter "E".
		The circuit breaker to be rated 25,000 AIC.
The main rules of Section 430.102(A) and (B) require that the disconnecting means be in sight of the controller. As per the exception to 430.102(B) the disconnecting means is permitted to be out of sight of the motor if it is capable of being locked in the open position. Incorrect answer. Please choose another answer.

70.	Where a single-phase, 240-volt air-conditioning unit has a full-load current rating of 35 amperes marked on the nameplate, what is the MINIMUM size 75C copper conductors required to supply the air-conditioning unit?
		10 AWG
		8 AWG
		6 AWG
		4 AWG
As mandated by Section 440.32, branch-circuit conductors supplying a single motor-compressor are to have an ampacity of not less than 125% of the rated-load current as indicated on the nameplate. 35 amperes x 125% = 43.75 amperes Size 8 AWG 75 C copper conductors with an ampacity of 50 amperes should be selected from Table 310.15(B)(16). Incorrect answer. Please choose another answer.

71.	Where an ac electrical service is supplied with four (4) parallel sets of size 500 kcmil aluminum ungrounded conductors, what is the MINIMUM size copper grounding electrode conductor required when connected to the concrete encased reinforcing building steel?
		3/0 AWG
		4/0 AWG
		250 kcmil
		2/0 AWG
In compliance with Section 250.66, the size of the grounding electrode conductor at the service at each building or structure is based on the size of the largest ungrounded service-entrance conductor or equivalent area for parallel conductors. The size of the grounding electrode conductor shall not be less than given in Table 250.66. Apply Table 250.66 as shown: Size 500 kcmil x 4 conductors = 2,000 kcmil total area *NOTE: Aluminum service-entrance conductors over 1750 kcmil require a size 3/0 AWG copper grounding electrode conductor. Incorrect answer. Please choose another answer.

72.	Where exposed Type NM cable passes through a floor, the cable shall be enclosed in an approved conduit extending at LEAST _____ above the floor.
		6 inches
		8 inches
		12 inches
		16 inches
As required in Section 334.15(B), where exposed Type NM cable passes through a floor it is to be protected from physical damage by an approved means up to a height of 6 in. above the floor. Incorrect answer. Please choose another answer.

73.	When installing wiring for sensitive electronic equipment, the MAXIMUM voltage to ground is required to be _____ .
		277 volts
		120 volts
		60 volts
		30 volts
Section 647.1 requires when installing wiring for sensitive electronic equipment, the maximum voltage to ground is permitted to be no more than 60 volts. Incorrect answer. Please choose another answer.

74.	In a health care facility, a patient bed location in a critical care area is required to have which of the following?
		Four single receptacles or two duplex receptacles.
		Eight single receptacles or four duplex receptacles.
		Three duplex receptacles or six single receptacles.
		Fourteen single receptacles or seven duplex receptacles.
Section 517.19(B)(1)&(2) specifies the number of receptacles and the type of circuits required for patient bed locations in critical care areas of health care facilities. Each patient bed location must be provided with at least fourteen receptacles that may be of the single, duplex, or quadplex type, provided they are listed hospital-grade type and are identified as such, typically with a green dot. Incorrect answer. Please choose another answer.

75.	When intermediate metal conduit (IMC) is threaded in the field, a standard cutting die with a _____ taper per foot shall be used.
		3/8 in.
		1/2 in.
		3/4 in.
		1 in.
Where intermediate metal conduit is threaded in the field, a standard cutting die with a taper of 3/4 in. per foot shall be used. Refer to Section 342.28. Incorrect answer. Please choose another answer.

76.	Electrically heated floors in bathrooms, kitchens, and in hydromassage bathtub locations shall be _____.
		GFCI protected
		AFCI protected
		grounded
		isolated
Section 424.44(G) requires the use of GFCI protection where heating cables are installed in concrete or poured masonry floors of bathrooms, kitchens and hydromassage bathtub locations. This requirement helps to reduce shock hazards to persons with bare feet in these areas. The GFCI protection is mandatory regardless of the type of floor covering over the concrete or poured masonry. Incorrect answer. Please choose another answer.

77.	Which of the following methods is an acceptable marking for the grounding pole on a grounding type receptacle?
		A green colored hexagonal headed or shaped terminal screw.
		An orange dot.
		A white colored round headed screw.
		An orange colored hexagonal headed screw.
An acceptable marking method for the grounding pole on a grounding type receptacle is a green-colored hexagonal-headed or shaped terminal screw or nut, not readily removable. Refer to Section 406.10(B)(1). Incorrect answer. Please choose another answer.

78.	What is the MAXIMUM length of a flexible cord that may be used for a recirculating pump motor on a swimming pool at a dwelling?
		3 feet
		4 feet
		6 feet
		8 feet
Section 680.21(A)(5) allows pool-associated motors to employ cord-and-plug connections, provided the flexible cord does not exceed 3 feet in length. Incorrect answer. Please choose another answer.

79.	Plate grounding electrodes shall be installed NOT less than _____ below the surface of the earth.
		12 inches
		18 inches
		24 inches
		30 inches
Section 250.53(H) mandates plate grounding electrodes to be installed not less than 30 inches below the surface of the earth. Incorrect answer. Please choose another answer.

80.	A disconnecting means shall be provided on the supply side of all fuses in circuits having a voltage of at LEAST _____ to ground.
		120 volts
		250 volts
		150 volts
		277 volts
All fuses in circuits over 150 volts to ground shall be provided with a disconnecting means on their supply side so that each circuit containing fuses can be independently disconnected from their source of power. Refer to Section 240.40. Incorrect answer. Please choose another answer.

81.	Where an 80-ampere, 240-volt, single-phase load is located 200 feet from a panelboard and is supplied with size 3 AWG copper conductors with THWN insulation, what is the approximate voltage-drop on the circuit? (K = 12.9)
		6.0 volts
		4.0 volts
		9.2 volts
		7.84 volts
To determine the voltage-drop, first find the circular mil area of the conductors as shown in Chapter 9, Table 8. Then apply the single-phase voltage-drop formula as follows: VD = 2KID VD = 2 x 12.9 x 80 amps x 200 ft. = 7.84 volts CM 52,620 CM Incorrect answer. Please choose another answer.

82.	Enclosures in a Class I, Division 1 location containing components that have arcing devices must have an approved seal located within at LEAST _____ of each conduit run entering or leaving such enclosures.
		12 inches
		18 inches
		24 inches
		4 feet
The requirements for the location of conduit seals are to prevent an explosion from traveling through the conduit to another enclosure and to minimize the passage of gasses or vapors from hazardous locations to locations that are not considered hazardous. In Class I, Division I locations, where the conduit enters an enclosure that contains arcing devices, a sealing fitting is required to be installed within 18 in. of the enclosure. Refer to Section 501.15(A)(1). Incorrect answer. Please choose another answer.

83.	According to the NEC® which of the following statements is true about installing listed or labeled equipment?
		The equipment may be installed in whatever manner the contractor determines best.
		The equipment shall be installed in accordance with the instructions.
		The equipment only needs to be listed or labeled where installed in an industrial environment.
		The equipment may be subject to listed or labeled equipment if it is determined to be acceptable by the contractor.
In compliance with Section 110.3(B), listed or labeled equipment shall be installed and used in accordance with any instructions included in the listing or labeling. Incorrect answer. Please choose another answer.

84.	The NEC considers the area around the motor fuel dispensing pumps of a service station to be a hazardous location. This area extends a height of 18 inches above grade, and up to a distance from the enclosure of the outdoor motor fuel dispensing pumps of ____.
		5 feet
		10 feet
		16 feet
		20 feet
Table. 514.3(B)(1) indicates, up to 18 in. above grade level, and extending a distance horizontally of 20 ft. from the outdoor motor fuel dispensing pumps, the area is considered a Class I, Division 2 hazardous location. Incorrect answer. Please choose another answer.

85.	According to the National Electrical Code®, what are the three (3) mandatory separate branches of the hospital essential electrical system?
		The emergency branch, the standby branch and the critical branch.
		The life safety branch, the critical branch and the equipment branch.
		The normal branch, the alternate branch and the optional standby branch.
		The emergency branch, the non-essential branch and the normal branch.
As described at Section 517.30(B), the three mandatory separate branches of the hospital essential electrical system are the life safety, critical and equipment branch. These three separate branches of the essential electrical system are to be capable of supplying a limited amount of lighting and power service that is considered essential for life safety and effective hospital operation during the time the normal electrical service is interrupted for any reason. Incorrect answer. Please choose another answer.

86.	Class 3 single conductors shall NOT be smaller than _____.
		18 AWG
		16 AWG
		14 AWG
		20 AWG
Section 725.179(H) specifies that Class 3 single conductors shall not be smaller than 18 AWG and shall be Type CL3. Incorrect answer. Please choose another answer.

87.	At the time of installation, grounded (neutral) conductors larger than size 6 AWG may be identified at its terminations by _____ colored phase tape.
		white
		orange
		red
		blue
In compliance with Section 200.6(B)(4), an insulated grounded conductor of size 4 AWG and larger is permitted to be identified by means of white marking at its terminations. This marking shall encircle the conductor or insulation. The most common method of marking neutral conductors is by the use of white colored tape. Incorrect answer. Please choose another answer.

88.	When grounding the structural reinforcing steel of a swimming pool, what is the smallest size grounding conductor permitted for this installation?
		12 AWG
		10 AWG
		8 AWG
		6 AWG
The intent of Section 680.26(B) is to ensure all metals parts of a swimming pool, such as the structural reinforcing steel and metal ladders, as well as metal components surrounding the pool, such as fences, be bonded together by use of a size 8 AWG, or larger, bare, solid, copper conductor. Incorrect answer. Please choose another answer.

89.	When conductors or cables are installed in raceways exposed to direct sunlight on or above a rooftop and within at LEAST _____ of the rooftop, a temperature adder must be applied to the applicable correction factors of Table 310.15(B)(2)(a) to determine the allowable ampacity of the conductors.
		6 inches
		12 inches
		24 inches
		36 inches
Section 310.15(B)(3)(c) indicates to apply the ambient temperature adjustment values shown in Table 310.15(B)(3)(c) where conductors or cables are installed in raceways exposed to direct sunlight on or at least within 36 in. above a rooftop. The conductors in outdoor conduits installed on or near the surface of the roof are subject to a significant increase in temperature when the roof is exposed to direct sunlight. The closer the conduit is to the roof, the greater the ambient temperature adjustment. Incorrect answer. Please choose another answer.

90.	Where a motor of more than 1 horsepower has a temperature rise of 50 deg. C indicated on the nameplate, for the purposes of selecting the overload device, this device shall be selected to trip at NO more than _____ of the motor's full-load ampere rating. (Assume modification of this value is not necessary.)
		100 percent
		115 percent
		125 percent
		130 percent
Operation of a motor in excess of its normal full-load rating for a prolonged period of time causes damage or overheating that may cause a fire. Motors are required to be protected from overloads. Those motors with a temperature rise of more than 40C indicated on the nameplate are incapable of withstanding an overload for an extended period of time. Therefore, the rating or setting of the overload device shall be not more than 115% the full-load current rating as indicated on the motor nameplate. Refer to Section 430.32(A)(1). Incorrect answer. Please choose another answer.

91.	Where size 14 AWG branch-circuit conductors protected by a 15-ampere rated circuit breaker supplies three (3) 20-ampere rated duplex receptacles, this branch circuit _____ .
		would be in compliance with the NEC if the wire was size 12 AWG
		would be in compliance with the NEC if the circuit breaker was rated 20-amperes
		is not in compliance with the NEC because the receptacles have a 20-ampere rating
		is in compliance with the NEC
As per Table. 210.21(B)(3) and Table 210.24, where a branch circuit is protected by a 15-ampere rated circuit breaker and size 14 AWG conductors are used, the receptacles must be rated 15-amperes. Incorrect answer. Please choose another answer.

92.	What is the MAXIMUM number of times a grounding electrode conductor is permitted to be spliced by use of listed split-bolt connectors?
		one
		two
		three
		none
Section 250.64(C)(1) prohibits the splicing of a grounding electrode conductor by use of a split-bolt connector, but permits a more permanent method of connection such as by exothermic welding or by irreversible compression-type connectors. Incorrect answer. Please choose another answer.

93.	Given: A metal junction box has a volume of 27 cubic inches and contains a total of six (6) size 12 AWG conductors, no grounding conductors, devices or fittings are contained in the box. Additional wires of size 10 AWG need to be added in the box. What is the MAXIMUM number of size 10 AWG conductors may be added to this box?
		two
		five
		six
		eight
To determine how many conductors may be added to a junction box, first find the volume, in cubic inches, of the existing conductors in the box by applying the values, in cubic inches, as shown on Table 314.16(B). Size 12 AWG = 2.25 cu. in. x 6 (existing wire in box) = 13.5 cu. in. Next, subtract the cu. in. volume of the existing wires in the box from the allowable fill of the box to find the remaining space available. 27.0 cu. in. (allowable fill of box) -13.5 cu. in. (existing wire in box) 13.5 cu. in. (remaining space available) Then, divide the remaining space available by the cu. in. volume of the size10 AWG conductors to be added. 13.5 cu. in. (remaining space) = 5.4 = 5 size 10 AWG wires may be added 2.5 cu. in. (10 AWG) Incorrect answer. Please choose another answer.

94.	For enclosing a mobile home supply cord, what is the MAXIMUM trade size conduit permitted between the branch circuit panelboard of a mobile home and the underside of a mobile home floor?
		1 in.
		1 1/4 in.
		1 1/2 in.
		2 in.
As per Section 550.10(G) the trade size 1 1/4 in. conduit is of adequate size to enclose and protect the conductors. Incorrect answer. Please choose another answer.

95.	Which of the following wiring methods is/are approved for use for fixed wiring in an area above Class I locations in a commercial garage?
		Type MI cable
		Type TC cable
		Type MC cable
		All of the above
You should have selected all of the above because Section 511.7(A)(1) permits all of the wiring methods listed to be used for fixed wiring in an area above Class I locations in a commercial garage. Incorrect answer. Please choose another answer.

96.	Outside open conductors of not over 1000 volts shall have a clearance of NOT less than _____ from signs, chimneys, and television antennas.
		8 feet
		6 feet
		4 feet
		3 feet
Section 225.19(B) requires a clearance of not less than 3 ft. from outside open conductors and signs, chimneys, and TV antennas to prevent a shock hazard and a ground-fault. Incorrect answer. Please choose another answer.

97.	Branch-circuit conductors supplying a fixed storage-type electric water heater with a capacity of 120 gallons or less, shall have an ampacity of NOT less than _____ of the full-load current of the water heater.
		80 percent
		100 percent
		125 percent
		150 percent
As per Section 422.13, for the purposes of sizing branch circuits for a fixed storage-type water heater, the water heater shall be considered a continuous load. In compliance with Section 422.10(A), branch circuit conductors supplying an appliance considered a continuous load are required to have an ampacity of not less than 125% of the marked rating of the appliance. Incorrect answer. Please choose another answer.

98.	Household-type appliances with surface heating elements having a MAXIMUM demand of more than _____ shall have its power supply subdivided into two (2) or more circuits.
		60 amperes
		50 amperes
		40 amperes
		30 amperes
The reason for subdividing the overcurrent protection on household-type appliances with surface heating elements is to minimize the amount of damaging energy released into the heating elements during a short circuit, hereby reducing the risk of fire. Refer to Section 422.11(B). Incorrect answer. Please choose another answer.

99.	When driving a ground rod and solid rock is encountered, the ground rod is permitted to be buried in a trench at LEAST _____ deep.
		3 feet
		4 feet
		24 inches
		30 inches
Section 250.53(G) requires that all rod and pipe grounding electrodes have at least 8 ft. in length in contact with the soil. Where rock bottom is encountered, the electrodes are permitted to be buried in a 2 ft. (30 in.) deep trench. Incorrect answer. Please choose another answer.

100.	When conductors are installed in a conduit or tubing nipple of _____ or less in length, the ampacity adjustment factors for more than three (3) current-carrying conductors in the raceway are not required to be applied.
		24 inches
		30 inches
		36 inches
		48 inches
Section 310.15(B)(3)(a)(2) clarifies that adjustment factors for more than three (3) current-carrying conductors in raceways shall not apply where the raceway is not more than 24 inches in length. Where more than 3 current-carrying conductors are installed in short lengths of conduit or tubing, the heating effect caused from the additional conductors is insignificant. Therefore, the allowable ampacity of the conductors is not greatly reduced. Incorrect answer. Please choose another answer.