2024 Edition

Journeyman Electrician - Test 2 - 2014 NEC

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1.	For one-family dwellings and each unit of a two-family dwelling, at least one 125-volt, single-phase, 15- or 20-ampere receptacle outlet readily accessible from grade and NOT more than _____ above grade level shall be installed at the front and back of the dwelling.
		a. 5 feet
		b. 8 feet
		c. 6 feet
		d. 6 feet
The objective of Section 210.52(E)(1) is to provide readily accessible receptacles at the front and back of dwellings at a height of not more than 6 feet above grade level so that the receptacles are capable of being reached by the average person without the use of ladders Incorrect answer. Please choose another answer.

2.	When an industrial control panel is supplied from a 3-phase, 4-wire, delta-connected electrical system, the phase having the higher voltage to ground is _____ .
		a. required to be the "A" phase
		b. required to be the "B" phase
		c. required to be the "C" phase
		d. permitted to be any phase
The B phase shall be that phase having the higher voltage to ground on 3-phase, 4-wire, delta-connected systems of industrial control panels. This rule applies to new installations. Other busbar arrangements are permitted for additions to existing installations and the phases are to be permanently marked and identified. Refer to Section 409.102(B). Incorrect answer. Please choose another answer.

3.	When conductors having a voltage of not more than 600 volts pass above a public driveway, they shall have a MINIMUM clearance of NOT less than _____ above finished grade.
		a. 10 feet
		b. 15 feet
		c. 18 feet
		d. 20 feet
The purpose of this rule, Section 225.18(4), is to maintain a safe clearance distance from ground to the overhead conductors to allow the passage of vehicle traffic in public areas. This rule helps to protect the conductors from physical damage and to protect persons and vehicles from accidental contact with the conductors. Incorrect answer. Please choose another answer.

4.	Shore power for boats shall be provided by single receptacles rated NOT less than ______ .
		a. 20 amperes
		b. 30 amperes
		c. 50 amperes
		d. 60 amperes
Single locking and grounding receptacles, rated not less than 30-amperes, are required for providing shore power to boats. The intent of Section 555.19(A)(4) is to ensure proper connections and prevent unintentional disconnection of on-board equipment such as refrigerators and bilge pumps. Incorrect answer. Please choose another answer.

5.	Where a mobile home has the main service disconnecting means installed outdoors, the disconnecting means shall be installed so the bottom of the enclosure is NOT less than _____ above finished grade.
		a. two feet
		b. three feet
		c. four feet
		d. six feet
As per Section 550.32(F), an outdoor mobile home disconnecting means shall be installed so the bottom of the disconnecting means enclosure is not less than 2 ft. above finished grade or working platform. The 2 ft. clearance required above finished grade should help to prevent water from entering the enclosure. Incorrect answer. Please choose another answer.

6.	Determine the MAXIMUM allowable ampacity of a 3-conductor size 6 AWG XHHW aluminum SER cable installed in the attic of a one-family dwelling where the ambient temperature is 44 degrees C.
		a. 41.2 amperes
		b. 52.2 amperes
		c. 47.9 amperes
		d. 56.2 amperes
To determine the allowable ampacity of the 3-conductor size 6 AWG XHHW aluminum SER cable, refer to Table 310.104(A) and note the cable is rated for when used in a dry location. Next, find the ampacity of the conductors before derating, which is 55 amperes, from Table 310.15(B)(16). Finally, due to the elevated temperature, apply the temperature correction factor found on Table 310.15(B)(2)(a). Do the math as shown: Size 6 AWG AL XHHW ampacity before derating = 55 amperes 55 amperes x .87 (temperature correction) = 47.85 amperes Incorrect answer. Please choose another answer.

7.	Unless specifically identified for a higher percentage of fill, the cross-sectional area of the conductors in a conduit seal shall NOT exceed _____ of the cross-sectional area of a rigid metal conduit of the same trade size.
		a. 25 percent
		b. 40 percent
		c. 50 percent
		d. 60 percent
The intent of Section 501.15(C)(6) is to minimize the passage of gases from one portion of the electrical system to another and to ensure an adequate area is available for pouring the sealing compound. As per Table 1, Chapter 9, the maximum permitted fill area for conduit is 40%; the maximum fill area permitted for standard conduit seals is 25%. If the conduit fill exceeds 25% of the cross-sectional area of the sealing fitting, a larger trade size sealing fitting is required. Incorrect answer. Please choose another answer.

8.	All nonlocking-type, 125-volt, 15- and 20-ampere receptacles located in guest rooms of hotels and motels shall be listed _____ receptacles.
		a. tamper-proof
		b. tamper-resistant
		c. extra duty
		d. heavy duty
The requirement of Section 406.12(B), mandating nonlocking-type receptacles to be listed tamper-resistant in guest rooms of hotel and motels is intended to increase safety for children since the rooms are also occupied by children. Tamper-resistant receptacles are designed to prevent the insertion of metal objects such as paper clips which would create a shock hazard. Incorrect answer. Please choose another answer.

9.	Direct-buried cables or conductors located in a trench below two (2) inch thick concrete or equivalent shall have a MINIMUM cover requirement of _____.
		a. 6 inches
		b. 12 inches
		c. 18 inches
		d. 24 inches
Table 300.5, Column 1, shows under this condition, the cables or conductors are to have a minimum earth cover of 18 inches. The purpose of Table 300.5 is to reduce the risk of an accident during excavation near underground installed conductors, direct-buried cables, and conduits. Incorrect answer. Please choose another answer.

10.	The MAXIMUM unsupported length of Type MC cable used to supply a luminaire in an accessible ceiling is permitted to be NOT more than _____ in length.
		a. 10 feet
		b. 6 feet
		c. 4 feet
		d. 18 inches
Section 330.30(D)(2) permits listed MC cable fittings as a means to support the last 6 ft. of MC cable supplying a luminaire in an accessible ceiling and additional means of support is not required. Incorrect answer. Please choose another answer.

11.	Which of the following listed is/are prohibited from being supplied through AFCI or GFCI protective devices?
		a. 120-volt smoke alarms
		b. fire alarm systems
		c. 120-volt receptacle outlets in residential garages
		d. residential lighting outlets
The requirements of Section 760.41(B) correlate with the requirements of NFPA 72. The branch circuit supplying fire alarm equipment shall supply no other loads and shall not be supplied through ground-fault circuit interrupters or arc-fault circuit interrupters. Also see Section 760.121(B). The intent of these two sections is to maintain the circuit in the event of an arc-fault or ground-fault so the heat and smoke detectors have the ability to activate in the event of a fire. Incorrect answer. Please choose another answer.

12.	Where a submersible pump is located in a pond of a water treatment plant, the on land service equipment for the pump shall be NO closer than _____ horizontally from the shoreline.
		a. 6 feet
		b. 10 feet
		c. 5 feet
		d. 3 feet
The intent of Section 682.11 is to prevent damage to the on land service equipment in the event of tidal waters or flooding. Incorrect answer. Please choose another answer.

13.	When splicing existing underground service conductors to extend to a new service location, the NEC requires _____ . I) the use of splice boxes II) the conductors to be protected with a covering of at least two (2) inches of concrete
		A. I only
		B. II only
		C. Either I or II
		D. Neither I nor II
Section 300.5(E) does not require underground splices of direct-buried cables or conductors to be in a box or protected by a covering of concrete when made in an approved manner in accordance with Section 110.14(B). Where underground splices are made in accordance with 110.14(B), which requires the splicing means to be listed for underground use, the sealed wire connector systems are listed for underground splicing. They restore the insulation integrity of the spliced conductors in a permanent joint. Incorrect answer. Please choose another answer.

14.	Equipment supplied by Class 1 circuits such as fire alarm, control, and signaling circuits shall be grounded, UNLESS operating at less than _____ .
		a. 25 volts
		b. 120 volts
		c. 50 volts
		d. 150 volts
Section 250.112(I) permits equipment supplied Class 1 circuits of less than 50 volts to not be grounded. Incorrect answer. Please choose another answer.

15.	A single-phase, 120/240 volt, 18 kW rated home standby generator has a full-load current rating of _____ .
		a. 75 amperes
		b. 87 amperes
		c. 100 amperes
		d. 150 amperes
To solve this problem apply the single-phase current formula as follows: I = power I = 18 kW x 1,000 = 18,000 = 75 amperes volts 240 volts 240 Incorrect answer. Please choose another answer.

16.	A premises wiring system supplied by a grounded ac electrical service, shall have a grounding electrode conductor connected to _____ .
		a. the grounded service conductor
		b. the service disconnect enclosure
		c. the equipment grounding conductor
		d. the meter socket enclosure
The grounded conductor of an ac service is connected to a grounding electrode system to limit the voltage to ground imposed on the system by lightning and line surges. It also stabilizes the voltage to ground during normal operation, including short circuits. Refer to Section 250.24(A). Incorrect answer. Please choose another answer.

17.	A conductor with THHN marked on the insulation has a temperature rating of ______.
		a. 90 degrees F
		b. 90 degrees C
		c. 75 degrees F
		d. 75 degrees C
As shown in Table 310.104(A) and Table 310.15(B)(16) conductors with THHN insulation have a temperature rating of 90C. Incorrect answer. Please choose another answer.

18.	When a retail furniture store has 80 continuous linear feet of display show window, the NEC® mandates at LEAST _____ receptacle outlets be provided within 18 inches of the top of the show window for the show window lighting.
		a. six
		b. seven
		c. eight
		d. nine
To prevent the use of floor receptacles and extension cords, receptacles are required to be installed directly above a show window. One receptacle is required for every 12 linear ft. or "major fraction thereof" (6 ft. or more). Refer to Section 210.62. The calculation for 80 continuous feet of show window is as follows: 80 ft. (show window) = 6.7 = 7 receptacles 12 ft. (per receptacle) Incorrect answer. Please choose another answer.

19.	An inverter or an ac module in an interactive solar photovoltaic system shall _____ upon loss of voltage from the local utility company.
		a. continue to operate
		b. automatically de-energize its output
		c. not operate as a stand alone system
		d. be required to be manually reset before re-energized
The requirement of Section 690.61 is to prevent energizing of otherwise de-energized system conductors or output conductors of other off-site sources such as the utility company, and is intended to prevent electrical shock. This feature is normally provided as part of the utility-interactive inverter. Incorrect answer. Please choose another answer.

20.	What MINIMUM size 75C copper feeder conductors are required to supply the following listed 3-phase, continuous-duty, 240-volt ac motors? one (1) 15 hp wound-rotor one (1) 7 hp induction-type one (1) 3 hp induction-type
		a. 4 AWG THWN
		b. 4 AWG THHN
		c. C. 3 AWG THW
		d. 2 AWG THW
As mandated per Section 430.24(1)&(2) conductors that supply more than one continuous-duty motor on a single circuit are required to have an ampacity of not less than 125% of the full-load current of the highest rated motor in the group, plus 100% of the full-load current rating of all remaining motors in the group. First, find the full-load current values of the motors as given in Table 430.250, do the math, then, select the conductor size applying Table 310.15(B)(16). 15 hp FLC - 42 amperes x 125% = 52.5 amperes 7 hp FLC - 22 amperes x 100% = 22.0 amperes 3 hp FLC - 9.6 amperes x 100% = 9.6 amperes Total = 84.1 amperes *NOTE: Size 4 AWG THWN conductors with an allowable ampacity of 85 amperes should be selected. Incorrect answer. Please choose another answer.

21.	Which of the following is NOT required to be marked on the nameplate of a transformer?
		a. kVA rating
		b. manufacturer
		c. voltage
		d. overcurrent protection
The information given on a transformer nameplate is necessary to determine the overcurrent protection, but the overcurrent protection value is not indicated on the nameplate. Refer to Section 450.11. Incorrect answer. Please choose another answer.

22.	In general, when current-carrying conductors are installed in parallel, the paralleled conductors in each phase shall _____. I) be the same size in circular mil area II) have the same insulation type
		a. I only
		b. II only
		c. Both I and II
		d. Neither I nor II
As required by Section 310.10(H)(2), where connected in parallel, all conductors of the same phase are to be the same size in circular mil area and have the same insulation type. In addition to the requirement of each paralleled phase conductors being the same size and insulation type, the proper grouping of phases in relation to one another can reduce inductive heating and result in a more balanced load between each conductor of a paralleled phase. Incorrect answer. Please choose another answer.

23.	When determining the allowable ampacity of conductors where the conductors or cables are installed in conduits exposed to direct sunlight four (4) inches above a rooftop, a temperature value of _____ shall be added to the expected outdoor ambient temperature to determine the applicable correction factors of Table 310.15(B)(2)(a) of the NEC.
		a. 60 degrees F
		b. 40 degrees F
		c. 30 degrees F
		d. 25 degrees F
The conductors in conduits located on or near the surface of the roof are subject to a significant increase in temperature when the roof is exposed to direct sunlight. As per Section 310.15(B)(3)(c), when this condition exists we are to apply the temperature adder values given in Table 310.15(B)(3)(c) to determine the allowable ampacity of conductors. Incorrect answer. Please choose another answer.

24.	Where transformer vaults are not protected with an automatic fire-suppression system, they shall be constructed of approved materials that have a MINIMUM fire-resistance rating of _____.
		a. 1 hour
		b. 2 hours
		c. 3 hours
		d. 4 hours
Where transformer vaults are not protected with an automatic fire suppression system they are to be constructed of approved materials with a 3 hour fire resistance rating. This construction method is required because of the concern for containing projectiles created in a transformer explosion and to prevent the spread of burning oil to other combustible materials. Refer to Section 450.42. Incorrect answer. Please choose another answer.

25.	In regard to new outdoor installations of permanently installed swimming pools, luminaires installed above the pool or within 5 feet horizontally from the inside wall of the pool, shall be installed at a height of NOT less than _____ above the maximum water level of the pool.
		a. 10 feet
		b. 12 feet
		c. 15 feet
		d. 8 feet
The requirement of luminaires to be installed at a height of not less than 12 ft. when located within 5 ft. horizontally of a swimming pool is to prevent a shock hazard when cleaning the pool with an extended pole. See Section 680.22(B)(1). Incorrect answer. Please choose another answer.

26.	For solar photovoltaic systems, locating the system grounding connection point as close as practicable to the photovoltaic source better protects the system from _____.
		a. voltage surges due to ground-faults
		b. excessive voltage-drop
		c. voltage surges due to lightning
		d. excessive resistance in the grounding system
As per Section 690.42,IN, locating the grounding connection point as close as practicable to the photovoltaic source better protects the system from voltage surges due to lightning. Incorrect answer. Please choose another answer.

27.	Compliance with the provisions of the NEC will result in an electrical installation that is essentially _____.
		a. free from hazard
		b. a good electrical system
		c. an efficient system
		d. All of the above.
As indicated in Section 90.1(B), the NEC contains provisions necessary for safety. Compliance with the Code should result in an installation that is free from hazard but not necessarily efficient, convenient, or adequate for good service or future expansion of electrical use. Incorrect answer. Please choose another answer.

28.	In general, electrical metallic tubing (EMT) shall be securely fastened within _____ of each junction box, panelboard, or other conduit termination.
		a. 3 feet
		b. 6 feet
		c. 8 feet
		d. 10 feet
The reason EMT is required to be fastened in place at least every 10 ft. and within 3 ft. of each junction box, panelboard, or other conduit termination, is to ensure the tubing is secured in place. See Section 358.30(A). Incorrect answer. Please choose another answer.

29.	Where a 15-ampere rated general-use ac snap switch is used as a disconnecting means for an ac motor, the NEC requires the MAXIMUM full-load current rating of the motor to be NO more than _____ .
		a. 7.5 amperes
		b. 10 amperes
		c. 12 amperes
		d. 15 amperes
As permitted by Section 430.109(C)(2), on ac motor circuits, a general-use snap switch is permitted as a disconnecting means when suitable for use only on ac and where the motor full-load current rating is not more than 80% of the ampere rating of the switch. If the switch is rated for 15 amperes, then the motor must have a full-load current rating of not more than 12 amperes. 15 amperes (switch) x 80% = 12 amperes Incorrect answer. Please choose another answer.

30.	Determine the MAXIMUM number of 125-volt, general-purpose receptacles the NEC permits to be protected by a 20-ampere, 120-volt, single-pole inverse time circuit breaker in a commercial occupancy.
		a. 18
		b. 15
		c. 13
		d. 10
Section 220.14(I) requires receptacles on a single strap to be considered a load of 180 VA each. To determine how many receptacles are permitted to be connected to a circuit, first find the VA of the circuit (volts x amperes) and divide the result by 180 VA. Thus, 120 volts x 20 amperes = 2,400 VA (circuit) 2,400 VA (circuit) 180 VA (one receptacle) = 13 outlets Incorrect answer. Please choose another answer.

31.	Where underground installed service conductors emerge from grade and extend up a pole, they are to be protected by enclosures or raceways to a point at least 8 feet above grade. Where the raceway is subject to physical damage, a type of raceway NOT approved for such use is _____.
		a. RTRC-XW conduit
		b. Schedule 80 PVC conduit
		c. intermediate metal conduit
		d. Schedule 40 PVC conduit
Section 300.5(D)(4) lists the raceways approved to protect conductors from damage when emerging from grade and subject to physical damage. Schedule 40 PVC conduit is not approved for such use. Incorrect answer. Please choose another answer.

32.	In general, branch circuit conductors supplying continuous loads, such as fluorescent luminaires in an office building, school classroom, or retail shopping mall, shall have an ampacity of NOT less than _____ of the load.
		a. 125 percent
		b. 115 percent
		c. 150 percent
		d. 80 percent
The intent of Section 210.19(A)(1)(a) is to ensure conductors of branch circuits have the ability to supply power to loads without overheating. Incorrect answer. Please choose another answer.

33.	Determine the conductor allowable ampacity given the following related information and conditions: ambient temperature of 44 deg. C 250 kcmil THWN copper conductors four (4) current-carrying conductors are in the raceway length of raceway is 25 feet
		a. 160 amperes
		b. 167 amperes
		c. 200 amperes
		d. 209 amperes
Table 310.15(B)(16) shows the allowable ampacity of the conductor, before derating, is 255 amperes, which is multiplied by 0.82 [taken from the ambient temperature correction factors in Table 310.15(B)(2)(a)]. Thus the allowable ampacity is reduced to 209.1 amperes: 255 amperes x 0.82 = 209.1 amperes Because four (4) of these conductors run in the raceway, Table 310.15(B)(3)(a) requires the allowable ampacity to be further reduced to 80%: 209.1 amperes x 0.8 = 167.28 amperes Size 250 kcmil THWN copper ampacity before derating = 255 amperes 255 amps x .82 (temp. correction) x .8 (adjustment factor) = 167.28 amperes Incorrect answer. Please choose another answer.

34.	Determine the MAXIMUM overcurrent protection permitted for size 14 THWN copper motor control circuit conductors tapped from the load side of a motor overcurrent protection device. Given: the conductors require short-circuit protection and do not extend beyond the motor control equipment enclosure.
		a. 20 amperes
		b. 25 amperes
		c. 30 amperes
		d. 100 amperes
Where a motor control circuit is tapped from the load side of the motor overcurrent protective device, fuse or circuit breaker, the size of the tapped conductor and the rating of the overcurrent device are based on whether the conductor stays within the motor control enclosure or leaves it. The overcurrent protective devices for motor control circuit conductors are listed in Table 430.72(B). 209.1 amperes x 0.8 = 167.28 amperes Incorrect answer. Please choose another answer.

35.	Circuit breakers rated _____ or less and 1000 volts or less shall have the ampere rating molded, stamped, etched or similarly marked into their handles or escutcheon areas.
		a. 600 amperes
		b. 200 amperes
		c. 400 amperes
		d. 100 amperes
Section 240.83(B) requires circuit breakers rated 100 amperes or less and 1000 volts or less to have the ampere rating molded, stamped, or marked into their handles or escutcheon areas. This rule aids in identifying the ampere ratings of circuit breakers. Incorrect answer. Please choose another answer.

36.	Where a grounding ring consists of size 2 AWG bare copper wire encircling a building, buried 36 inches, in direct contact with the earth, what is the MINIMUM length of the wire permitted for the grounding electrode in this ground ring?
		a. 15 feet
		b. 20 feet
		c. 25 feet
		d. 50 feet
To qualify as a grounding electrode, the size 2 AWG bare copper conductor is to be in one continuous 20 ft. length. Refer to Section 250.52(A)(4). Incorrect answer. Please choose another answer.

37.	Where a rooftop mounted air-conditioning unit is supplied with three (3) size 8 AWG THWN copper conductors, enclosed in an electrical metallic tubing (EMT) within three (3) inches of the rooftop, and exposed to direct sunlight and an ambient temperature of 100 degrees F, the allowable ampacity of the conductors is _____ .
		a. 50 amperes
		b. 44 amperes
		c. 29 amperes
		d. 25 amperes
To solve this problem, first find the temperature adder, 40F, from Table 310.15(B)(3)(c) due to the proximity of the conduit to the rooftop exposure to sunlight then, add this value to the outdoor ambient temperature: outdoor ambient temperature = 100 deg. F adder (3" above roof) + 40 deg. F TOTAL = 140 deg. F (for derating) Table 310.15(B)(16) shows the allowable ampacity of the 8 AWG THWN copper conductors to be 50 amperes before derating, which is multiplied by 0.58 [taken from the ambient temperature correction factors in Table 310.15(B)(2)(a)]. Thus the allowable ampacity is reduced to 29 amperes: Size 8 AWG THWN ampacity (before derating) = 50 amperes 50 amperes x .58 (temperature correction) = 29 amperes Incorrect answer. Please choose another answer.

38.	Which of the following listed conductor insulations is oil resistant?
		a. TW
		b. TFE
		c. THWN
		d. MTW
Table 310.104(A) shows conductors with MTW insulation to be oil resistant. Incorrect answer. Please choose another answer.

39.	All exposed non-current-carrying metal parts of an information technology system shall _____ or shall be double insulated.
		a. be bonded to the equipment grounding conductor
		b. not be bonded to the equipment grounding conductor
		c. be bonded to the grounded conductor
		d. be isolated
As required by Section 645.15, all non-current-carrying metal parts of an information technology system shall be bonded to the equipment grounding conductor or shall be double insulated. Incorrect answer. Please choose another answer.

40.	What is the MAXIMUM allowable voltage between branch-circuit conductors supplying luminaires in a residence or guest rooms of hotels and motels?
		a. 120 volts
		b. 150 volts
		c. 240 volts
		d. 250 volts
The requirement in Section 210.6(A)(1), limiting the voltage of luminaires to 120 volts, is intended to reduce the exposure of residents in dwellings and similar occupancies to electric shock hazards when using or servicing permanently installed luminaires and cord-and-plug connected portable lamps. Incorrect answer. Please choose another answer.

41.	The service equipment for a mobile home shall be rated NOT less than _____, 120/240 volts, single-phase.
		a. 50 amperes
		b. 60 amperes
		c. 100 amperes
		d. 150 amperes
As per Section 550.32(C) mobile home service equipment shall be rated at not less than 100 amperes at 120/240 volts, single-phase. Incorrect answer. Please choose another answer.

42.	All 125-volt, single-phase receptacles not exceeding 30 amperes located at LEAST within _____ of the inside wall of a hydromassage tub shall be protected by a GFCI.
		a. 3 feet
		b. 5 feet
		c. 6 feet
		d. 10 feet
The intent of this rule, addressed in Section 680.71, is to prevent a shock hazard in the area surrounding a hydromassage tub that may have the presence of water. Incorrect answer. Please choose another answer.

43.	At the electrical service provided for a residence, the service-drop conductors shall have a MINIMUM clearance from final grade of _____.
		a. 8 feet
		b. 10 feet
		c. 12 feet
		d. 15 feet
To minimize the potential for making inadvertent contact, overhead service-drop conductors are to have a clearance from final grade of not less than 10 ft., where the voltage does not exceed 150 volts to ground. Refer to Section 230.24(B)(1). Incorrect answer. Please choose another answer.

44.	Where a 240-volt, single-phase 90 ampere load is located 225 feet from a panelboard and supplied with size 3 THWN copper conductors; what is the approximate voltage drop on this circuit? (K = 12.9)
		a. 6 volts
		b. 4 volts
		c. 8 volts
		d. 10 volts
To calculate the voltage-drop on this circuit, first locate the circular mil area of the conductors (52,620 CM) as indicated in Chapter 9, Table 8. Then apply the single-phase voltage-drop formula: VD = 2KID VD = 2 x 12.9 x 90 amps x 225 ft. = 9.92 volts dropped CM 52,620 CM Incorrect answer. Please choose another answer.

45.	The continuity of the grounding system for portable electrical carnival equipment shall be verified _____ .
		a. and recorded on an annual basis
		b. and recorded on a quarterly basis
		c. and recorded on a monthly basis
		d. each time the equipment is connected
Section 525.32 was initiated due to the transient nature of carnivals, fairs and similar events. Verification of the grounding system continuity each time equipment is reconnected helps ensure the safety of workers and personnel of the general public who may come in contact with electrical equipment. Incorrect answer. Please choose another answer.

46.	The MINIMUM required width of the working space in front of panelboards, switchboards, disconnects and motor controllers, shall be the width of the equipment or _____ whichever is greater.
		a. 2 feet
		b. 3 feet
		c. 4 feet
		d. 30 inches
The intent of Section 110.26(A)(2) is to provide enough accessible working space for personnel to operate and maintain the equipment in a safe manner. Incorrect answer. Please choose another answer.

47.	In a commercial garage work area, which of the following receptacles, if any, are required to have GFCI protection? I) 15-ampere general-purpose receptacles for hand tools and portable lighting equipment. II) 20-ampere receptacles serving electrical diagnostic equipment only.
		a. I only
		b. II only
		c. both I and II
		d. neither I nor II
The required GFCI protection as mandated in Section 511.12 applies to receptacles supplying specific types of utilization equipment used by repair technicians in commercial garages and similar occupancies where the floor surface is typically concrete slabs with direct or indirect contact with the earth. Section 210.8(B)(8) requires all 125-volt, single-phase 15- or 20-ampere receptacles in commercial garages to be provided with GFCI protection. In this environment the possibility of dampness or standing water increase the potential for electric shock. Incorrect answer. Please choose another answer.

48.	When sizing time-delay Class CC fuses for motor branch-circuit, short-circuit and ground-fault protection, they are to be sized at the same value as _____ .
		a. inverse-time circuit breakers
		b. nontime-delay fuses
		c. instantaneous trip circuit breakers
		d. adjustable trip circuit breakers
Note 1 to Table 430.52 clarifies the use of Class CC fuses for motor branch-circuit, short-circuit, and ground-fault protection is permitted and they are to be sized at the same value as nontime-delay fuses. Incorrect answer. Please choose another answer.

49.	The MINIMUM spacing required between the bottom of a 600 volt rated switchboard and the noninsulated busbars mounted in the switchboard cabinet is _____ .
		a. 6 inches
		b. 8 inches
		c. 10 inches
		d. 12 inches
Table 408.5 shows the minimum amount of wiring space required between the bottom of enclosures and busbars. This wiring space is provided to permit adequate clearance distance for the installation and termination of the conductors in the enclosure. Incorrect answer. Please choose another answer.

50.	Given: A rigid metal conduit (RMC) to be installed will contain only the following three (3) circuits on the load side of the service overcurrent protective devices: two - 150 ampere, 3-phase circuits one - 300 ampere, single-phase circuit The load side equipment bonding jumper for this conduit must be a MINIMUM size of _____ copper.
		a. 1 AWG
		b. 2 AWG
		c. 4 AWG
		d. 6 AWG
Section 250.102(D) permits a single equipment bonding jumper to connect two or more raceways or cables if the bonding jumper is sized in accordance with 250.122 for the largest overcurrent device protecting the conductors in the raceway. Since the largest overcurrent device protecting the conductors in this raceway is rated 300 amperes, Table 250.122 shows the load side equipment bonding must be a 4 AWG copper conductor. Incorrect answer. Please choose another answer.

51.	Where conduits enter a floor-standing switchboard or panelboard at the bottom, the conduits, including their end fittings, shall NOT rise more than _____ above the bottom of the enclosure.
		a. 6 inches
		b. 4 inches
		c. 2 inches
		d. 3 inches
Section 408.5 mandates where conduits enter a floor-standing switchboard at the bottom, the conduit or raceways, including their end fittings, shall not rise more than 3 in. above the bottom of the enclosure. The intent of this rule is to provide adequate wiring space to permit installation of the conductors in the enclosure. Incorrect answer. Please choose another answer.

52.	Flat conductor cable (FCC) systems may be used in _____.
		a. school buildings
		b. damp locations
		c. hospital buildings
		d. None of these
As indicated in Section 324.10(E), the use of FCC systems is permitted in damp locations. But according to Section 324.12(4), the use of FCC systems is prohibited in schools, and hospital buildings, even though parts of these buildings may be office spaces. Incorrect answer. Please choose another answer.

53.	What is the MAXIMUM length permitted for the flexible cord used to supply an electrically operated kitchen waste disposer?
		a. 18 inches
		b. 24 inches
		c. 36 inches
		d. 48 inches
Section 422.16(B)(1)(2) permits the length of the cord for a kitchen waste disposer to be no more than 36 in. This length should be adequate to connect the appliance without the use of potentially hazardous extension cords under the counter. Incorrect answer. Please choose another answer.

54.	Thermostatically controlled switching devices serving as both controllers and disconnecting means for fixed electric space heating equipment shall _____.
		a. be prohibited
		b. be located not more than 5 feet above the floor level
		c. directly open all grounded conductors when manually placed in the OFF position
		d. be designed so that the circuit cannot be energized automatically after the device has been manually placed in the OFF position
As per Section 424.20(A)(3) thermostatically controlled switching devices are allowed to serve as both controllers and disconnecting means for fixed electric space heating equipment where designed so that the circuit cannot be energized automatically after the device has been placed in the OFF position. This design feature eliminates shock hazards when servicing the equipment. Incorrect answer. Please choose another answer.

55.	A bonding jumper connected between the communications grounding electrode and power grounding electrode system at the building or structure service where separate electrodes are used shall NOT be smaller than size _____ copper.
		a. 8 AWG
		b. 6 AWG
		c. 12 AWG
		d. 10 AWG
As mandated by Section 800.100(D), a bonding jumper not smaller than 6 AWG is required between the communications grounding electrode and the power grounding electrode system Incorrect answer. Please choose another answer.

56.	Given: A straight pull of size 4 AWG and larger conductors is to made in a junction box that will have a 3 in. conduit and two (2) 2 in. conduits entering on the same side and exiting on the opposite wall. No splices or terminations will be made in the box. Which of the following listed junction boxes is the MINIMUM required for this installation?
		a. 18 in. x 12 in.
		b. 20 in. x 18 in.
		c. 20 in. x 12 in.
		d. 24 in. x 24 in.
Section 314.28(A)(1) applies to minimum dimensions of pull and junction boxes containing conductors 4 AWG or larger. For straight pulls, the minimum length of the box is based on eight times the largest raceway entering the box. 3 in. (largest conduit) x 8 = 24 inches Incorrect answer. Please choose another answer.

57.	Where Type UF cable is installed as a substitute wiring method for NM cable, the conductor insulation shall be rated for _____.
		a. 60C
		b. 75C
		c. 90C
		d. 110C
Where Type UF cable is installed as NM cable, according to Section 340.112, the conductor insulation shall be rated 90C. However, the ampacity of the cable is determined according to rules established for NM cable in Section 334.80. Incorrect answer. Please choose another answer.

58.	All 15- or 20-ampere, single-phase, 125-volt receptacles located within at LEAST _____ of the edge of a decorative fountain shall be provided with GFCI protection for personnel.
		a. 10 feet
		b. 15 feet
		c. 20 feet
		d. 25 feet
The intent of Section 680.58 is to eliminate a potential shock hazard for personnel within 20 ft. of a fountain where water or dampness may be present. Incorrect answer. Please choose another answer.

59.	The emergency controls for attended self-service gasoline stations or convenience stores with motor fuel dispensing facilities must be located NOT more than _____ from the motor fuel dispensers.
		a. 20 feet
		b. 50 feet
		c. 75 feet
		d. 100 feet
The reason the emergency controls for motor-fuel dispensers to be located remote, but not more 100 ft. from the dispensing units is so that if an emergency occurs, the person operating the emergency controls is not exposed to the hazard. Refer to Section 514.11(B). Incorrect answer. Please choose another answer.

60.	Given: A transformer is to be fed with four (4) parallel size 500 kcmil conductors per phase. The conductors will enter the enclosure on the opposite wall of the terminals. What is the MINIMUM wire-bending space required for the conductors?
		a. 16 inches
		b. 14 inches
		c. 12 inches
		d. 10 inches
Section 312.6(B)(2) and Table 312.6(B) provide the requirements for wire-bending space where straight-in wiring or offset bends are used at the terminals. Incorrect answer. Please choose another answer.

61.	What is the MINIMUM size THWN copper conductors required to supply a continuous-duty, 25 hp, 208-volt, 3-phase motor, where the motor is on the end of a short conduit run that contains only three (3) conductors, and located where exposed to an ambient temperature of 115 deg. F?
		a. 6 AWG
		b. 3 AWG
		c. 2 AWG
		d. 1 AWG
To determine the minimum size required of the conductors to supply this motor, first find the full-load current rating of the motor, 74.8 amperes, from Table 430.250. Next, as per Section 430.22 multiply by 125%. Then, divide by the temperature correction factor, 0.75, from Table 310.15(B)(2)(a). Finally, select the conductor size, 1 AWG THWN, from Table 310.15(B)(16). 25 hp motor FLC = 74.8 amperes x 125% = 93.5 amperes 93.5 amps .75 (temperature correction) = 124.6 amperes *NOTE: The wire size needs to be increased because of the elevated ambient temperature. Size 1 AWG THWN conductors with an allowable ampacity of 130 amperes should be selected. Incorrect answer. Please choose another answer.

62.	In dwelling units, hallways of _____ or more in length shall be provided with at least one 125-volt, single-phase, general-use receptacle outlet.
		a. 10 feet
		b. 20 feet
		c. 25 feet
		d. 30 feet
The intent of Section 210.52(H) is to minimize strain or damage to cords and receptacles when performing household chores and tasks. Incorrect answer. Please choose another answer.

63.	In general, where a 20-ampere branch circuit serves a single receptacle outlet, the rating of the receptacle must NOT be less than _____.
		a. 10 amperes
		b. 15 amperes
		c. 16 amperes
		d. 20 amperes
The purpose of Section 210.21(B)(1) is to prevent overloading the receptacle. In general, when a branch circuit supplies a single receptacle the receptacle is to have an ampere rating equal to the branch circuit rating. Incorrect answer. Please choose another answer.

64.	Where applying the general method of calculation for dwelling units, the load for household electric clothes dryers shall be a MINIMUM of _____ or the nameplate rating, whichever is larger, for each clothes dryer served.
		a. 4000 watts
		b. 5000 watts
		c. 6000 watts
		d. 7500 watts
In compliance with Section 220.54, the minimum load to be used for household electric clothes dryers is the larger of either 5000 VA or the nameplate rating of the dryer. Incorrect answer. Please choose another answer.

65.	When calculating the service-entrance conductors for a farm service, the second largest load of the total load, shall be calculated at _____ .
		a. 90 percent
		b. 80 percent
		c. 75 percent
		d. 65 percent
When calculating the total load for a farm service, the demand for the second largest load is 75%, because it is assumed all the loads will not be used continuously for an indefinite period of time. Refer to Table 220.103. Incorrect answer. Please choose another answer.

66.	Single-conductor cable Type _____ shall be permitted in exposed outdoor locations in photovoltaic source circuits for photovoltaic module interconnections within the photovoltaic array.
		a. UF
		b. THHN
		c. USE-2
		d. THWN
The objective in Section 690.31(C)(1) is most PV modules are designed for direct series connection by using factory-installed leads and connectors. To accomplish this series connection without wasting conductors in a multiconductor cable, use of a listed single-conductor Type USE-2 cable is permitted in PV source circuits. Incorrect answer. Please choose another answer.

67.	What percent of electrical supplied spaces in a recreational vehicle park must be equipped with at least one (1) 30-ampere 125-volt receptacle outlet?
		a. 60 percent
		b. 70 percent
		c. 90 percent
		d. 100 percent
The minimum requirements in Section 551.71 ensures the availability of the properly rated receptacles in RV parks. Most RV sites have both 20-ampere and 30-ampere receptacles available. Many RV sites have 20-ampere, 30-ampere and 50-ampere receptacles mounted on a common pedestal. Incorrect answer. Please choose another answer.

68.	What is the MINIMUM number of 120-volt, 20-ampere, general lighting branch circuits required for a dwelling unit having a calculated lighting load of 9,600 VA?
		a. one
		b. two
		c. three
		d. four
First find the VA of one circuit, 120 volts x 20 amperes = 2400 VA. Divide the the load, 9600 VA, by the value of one circuit, 2400 VA, as shown: 9600 VA = 4 lighting circuits 2400 VA Incorrect answer. Please choose another answer.

69.	Which of the following statements regarding a branch circuit provided for the purpose of charging electric vehicles is TRUE?
		a. The circuit is required to be a separate dedicated circuit and supply no other outlets.
		b. The circuit shall have a minimum rating of 30 amperes.
		c. The receptacle outlet connected to the branch circuit is to be of the "twist-lock" configuration and straight-blade type receptacles are prohibited.
		d. For dwelling units, all attached garages must be provided with at least one 20-ampere, 120-volt branch circuit for the purpose of charging electric vehicles.
Section 210.17 does not demand that an outlet(s) for the specific purpose of charging electric vehicles be installed. However, when such outlets are installed (by choice) they are required to be supplied by a separate branch circuit with no other outlets because electric vehicle charging equipment is a continuous load that usually operates for several hours. If on a branch circuit with other outlets, the overcurrent protective device could trip due to overload. Incorrect answer. Please choose another answer.

70.	Where ungrounded conductors are run in parallel in multiple raceways, the equipment grounding conductor, where used, shall be _____.
		a. omitted
		b. run in parallel in each raceway
		c. installed in one raceway only
		d. bare
Where equipment grounding conductors are installed in multiple raceways used in parallel conductor arrangements, Section 250.122(F) requires a full-sized equipment conductor selected from Table 250.122 based on the rating of the overcurrent device protecting the paralleled conductors. Therefore, the equipment grounding conductor in each raceway is capable of carrying a major portion of the fault current without burning open. Incorrect answer. Please choose another answer.

71.	Where track lighting is installed in a continuous row, each individual section of NOT more than _____ in length shall be securely supported.
		a. 2 feet
		b. 4 feet
		c. 6 feet
		d. 8 feet
As per Section 410.154, where lighting track is installed in a continuous row, each section must be supported at least every 4 ft. to adequately support the track. Incorrect answer. Please choose another answer.

72.	Determine the MINIMUM size THWN copper branch-circuit conductors required by the NEC® to supply one 40 hp, 480 volt, continuous duty, 3-phase, induction-type, Design C, motor.
		a. 8 AWG
		b. 3 AWG
		c. 4 AWG
		d. 6 AWG
To determine the minimum conductor size to supply this motor, first locate the full-load current rating of the motor, 52 amperes, from Table 430.250. Next, as per Section 430.22 multiply this value by 125%. Then, select the conductor size, 6 AWG THWN, from Table 310.15(B)(16). 40 hp FLC = 52 amperes x 125% = 65 amperes Incorrect answer. Please choose another answer.

73.	In health care facilities, essential electrical systems shall have a MINIMUM _____ .
		a. of one (1) hour back-up time
		b. capacity of 200 gallons of fuel for the auxiliary generator
		c. of two (2) independent sources of power
		d. capacity of 150 kVA
Essential electrical systems of health care facilities must have two independent sources of power, a normal source, usually from the utility company, and an alternate source such as a generator. Upon loss of the normal source of power, through an automatic transfer switch, the power is switched to the alternate source and the essential electrical systems will not encounter a total loss of power. Refer to Section 517.35(A). Incorrect answer. Please choose another answer.

74.	Where compressed natural gas vehicles are repaired in a major repair garage, the area within _____ of the ceiling shall be considered unclassified where adequate ventilation is provided.
		a. 18 inches
		b. 24 inches
		c. 30 inches
		d. 36 inches
As per Section 511.3(C)(2)(a) in an area of a major repair garage where natural gas vehicles are repaired, the area within 18 in. of the ceiling is considered unclassified where adequate ventilation is provided. Incorrect answer. Please choose another answer.

75.	Determine the MINIMUM number of 15-ampere, 120-volt, general lighting branch-circuits required for a dwelling with 2,600 square feet of habitable space.
		a. three
		b. four
		c. five
		d. six
Section 220.12 requires a unit load not less than specified in Table 220.12 shall constitute the minimum lighting load. First, find the lighting load, in VA, of the house using Table 220.12: 2600 sq. ft. x 3 VA = 7800 VA (total lighting VA of the house) Next, calculate the VA of one circuit: 120 volts x 15 amperes = 1800 VA (one circuit) Finally, determine the number of circuits required: 7800 VA (load) = 4.3 = 5 lighting circuits 1800 VA (one circuit) Incorrect answer. Please choose another answer.

76.	In a dwelling unit bedroom, any wall space that is LEAST _____ or more in width must be provided with a general-use receptacle outlet.
		a. 2 feet
		b. 4 feet
		c. 6 feet
		d. 10 feet
The purpose of Section 210.52(A)(2)(1), requiring a receptacle to be located in a wall space 2 ft. or more in width, is to eliminate the need for extension cords in spaces often used for small pieces of furniture on which a lamp or an appliance may be placed. Incorrect answer. Please choose another answer.

77.	Which one of the following listed circuit breakers is NOT a standard ampere rating as per the NEC?
		a. 75 amperes
		b. 90 amperes
		c. 35 amperes
		d. 110 amperes
Standard ampere ratings of fuses and fixed-trip circuit breakers are listed in Section 240.6(A). Incorrect answer. Please choose another answer.

78.	On a 4-wire, delta-connected electrical system, the conductor having the higher voltage to ground, (high-leg), shall be identified as _____ in color, if the grounded conductor is also present to supply lighting or similar loads.
		a. white
		b. red
		c. green
		d. orange
The intent of Section 110.15 is to eliminate injury and property damage by marking the high-leg orange in color and making personnel aware there is a high-leg present. This requirement eliminates some of the hazards of accidentally connecting 120-volt equipment and outlets to the high-leg and causing injury to people and damage to equipment. Incorrect answer. Please choose another answer.

79.	The ampacity of the branch-circuit conductors supplying a residential central heating electric furnace shall NOT be less than _____ of the furnace load.
		a. 80 percent
		b. 100 percent
		c. 115 percent
		d. 125 percent
Section 424.3(B) indicates fixed electric space-heating equipment and motors are to be considered a continuous load. Therefore, as per 210.19(A)(1)(a), the branch circuit conductors supplying the heating equipment and associated motors are to have an ampacity of not less than 125% of the load. Incorrect answer. Please choose another answer.

80.	In general, which of the following MUST be provided at a patient bed location used for general care in a hospital?
		a. A circuit on the normal system.
		b. A circuit on the critical branch.
		c. "Hospital-grade" receptacles.
		d. All of these.
According to Section 517.18(A), patient bed locations in general care areas of health care facilities shall be supplied by at least two branch circuits, one from the critical branch and one from the normal system. The intent of this requirement is to have uninterrupted power available at all times at the receptacles. In compliance with 517.18(B), all receptacles are to be listed "hospital grade" and so identified. The receptacles are to be identified by a green dot on their face. Incorrect answer. Please choose another answer.

81.	A 240-volt, 10 kW, single-phase commercial dishwasher has a full-load current rating of _____.
		a. 21 amperes
		b. 24 amperes
		c. 42 amperes
		d. 30 amperes
To solve this problem apply the single-phase current formula as follows: I = power I = 10 kW x 1000 I = 10,000 = 41.6 amperes volts 240 volts 240 Incorrect answer. Please choose another answer.

82.	Receptacles that are located within the patient rooms, bathrooms, playrooms and activity rooms of pediatric wards in a health care facility shall be _____ or shall employ a listed tamper-resistant cover.
		a. provided with a metal face-plate
		b. 15-ampere rated
		c. a single receptacle type
		d. listed tamper-resistant
This receptacle safeguarding covers all receptacles installed in rooms and patient care areas of pediatric locations in health care facilities. This can be accomplished through use of either listed tamper-resistant receptacles or listed tamper-resistant covers, which prevents children from inserting metal objects such as paper clips into the energized parts of the receptacle. Refer to Section 517.18(C). Incorrect answer. Please choose another answer.

83.	Where a 2-gang box contains two (2) single-pole switches, unless the box is equipped with permanently installed barriers, voltage between the switches shall NOT be in excess of _____.
		a. 120 volts
		b. 277 volts
		c. 480 volts
		d. 240 volts
This mandate in Section 404.8(B), applies to switches ganged together with any wiring device where the voltage between adjacent conductors exceeds 300 volts. The barriers are required between devices fed from two different phases of a 480Y/277-volt system because the voltage between the phase conductors would be 480 volts. This requirement also applies where switches or devices are on different systems and are in the same box, such as a switch on a 277-volt system provided for lighting and a receptacle on a 120-volt system. Incorrect answer. Please choose another answer.

84.	The MINIMUM distance permitted from wall switches to the inside walls of an indoor installed spa or hot tub shall be _____.
		a. 5 feet
		b. 10 feet
		c. 15 feet
		d. 12 feet
The intent of Section 680.43(C) is to prevent personnel from operating a switch when in or on a spa or hot tub. This rule helps to prevent shock hazards. Incorrect answer. Please choose another answer.

85.	A luminaire shall be supported independently of the outlet box where it weighs MORE than _____ unless the outlet box is listed for the weight to be supported.
		a. 6 pounds
		b. 25 pounds
		c. 35 pounds
		d. 50 pounds
Luminaires supported by wall outlets or ceiling outlets must be securely attached. Care should be taken to securely fasten the supporting means of the luminaire. Sections 314.27(A)(1)&(2) require boxes designed to support luminaires that weigh more than 50 lbs. must be listed and marked with the maximum weight the box can support, otherwise the luminaire shall be supported independently of the box. Incorrect answer. Please choose another answer.

86.	For a motor used in a continuous-duty application, the motor nameplate current rating is used to determine the size of the _____ required for the motor.
		a. disconnecting means
		b. branch-circuit conductors
		c. overload protection
		d. short-circuit current
As per Section 430.6(A)(2), the ampere rating provided on the motor nameplate is used to size the overload protective devices intended to protect the motor. Incorrect answer. Please choose another answer.

87.	The ampacity of phase conductors from the generator terminals to the first overcurrent device shall NOT be less than _____ of the nameplate current rating of the generator where the design of the generator does not prevent overloading.
		a. 100 percent
		b. 115 percent
		c. 125 percent
		d. 150 percent
Section 445.13 requires where the design and operation of the generator does not prevent overloading, the ampacity of the phase conductors from the generator terminals to the first overcurrent protection device shall not be less than 115% of the nameplate current rating of the generator. Incorrect answer. Please choose another answer.

88.	In Class II, Division 1 locations, an approved method of connection of conduit to boxes or cabinets is _____ .
		a. compression fittings
		b. threaded bosses
		c. welding
		d. all of these
In Class II, Division 1 locations, boxes or fittings shall be provided with threaded bosses for connection to conduit or cable terminations and shall be dusttight. This requirement helps to prevent the entrance of combustible dust. Refer to Section 502.10(A)(3). Incorrect answer. Please choose another answer.

89.	The optional method of calculation for dwelling units is reserved for dwelling units with a demand load of at LEAST _____ or more.
		a. 100 amperes
		b. 125 amperes
		c. 150 amperes
		d. 200 amperes
As per Section 220.82(A) the optional calculation method addressed in Section 220.82 is permitted only if the service-entrance or feeder conductors have an ampacity and calculated demand load of at least 100 amperes. Incorrect answer. Please choose another answer.

90.	Apply the general method of calculation for dwellings and determine the demand load, in kW, on the service-entrance conductors for one (1) household 8 kW rated electric range.
		a. 8.0 kW
		b. 6.4 kW
		c. 7.6 kW
		d. 10.0 kW
Column B of Table 220.55 shows the demand factor to be applied for one household 8 kW electric range to be 80%. Thus, 8 kW x 80% = 6.4 kW demand Incorrect answer. Please choose another answer.

91.	When exceptions are not to be taken into consideration, what are the smallest size copper conductors permitted for use as overhead service-drop conductors?
		a. 2 AWG
		b. 4 AWG
		c. 6 AWG
		d. 8 AWG
Section 230.23(B) indicates the smallest size conductors permitted for overhead service-drop conductors to be 8 AWG copper or 6 AWG aluminum or copper-clad aluminum. Do not get service-drop conductors, the overhead conductors installed in free air between the utility electric supply system and the service point, confused with the service-entrance conductors; the conductors from the service point from the utility company to the service disconnecting means. Incorrect answer. Please choose another answer.

92.	GFCI protection is required for _____ provided for public use. I ) automotive vacuum machines located at car washes II) tire inflation machines located at convenience stores
		a. I only
		b. II only
		c. both I and II
		d. neither I nor II
In compliance with the rules set forth by Section 422.23, requiring GFCI protection for this type of equipment will greatly reduce electrical shock hazard incidents. Tire inflation machines and automotive vacuum machines at service stations, convenience stores and car washes are often subject to damage by the public to the point of abuse and are typically exposed to the elements. This type of equipment will be typically used outdoors in rain, snow and puddles of accumulated standing water, which are contributing factors that increase the risk of an electrical shock hazard. In the past, GFCI devices have demonstrated their value in preventing electrocution in exactly these types of conditions. Incorrect answer. Please choose another answer.

93.	Which one of the following listed cables has an overall covering that is fungus resistant?
		a. Type NM
		b. Type NMS
		c. Type NMC
		d. Type NMB
Section 334.116(B) indicates the overall covering of Type NMC cable shall be flame retardant, moisture resistant, fungus resistant, and corrosion resistant. Incorrect answer. Please choose another answer.

94.	Determine the allowable ampacity of each size 12 AWG 75 deg. C rated copper conductor, where three (3) current-carrying conductors are in a common raceway with an ambient temperature of 125 deg. F.
		a. 16.75 amperes
		b. 18.75 amperes
		c. 20.25 amperes
		d. 15.0 amperes
Table 310.15(B)(16) shows the allowable ampacity of the conductors is 25 amperes, before derating, which is multiplied by 0.67 [taken from the ambient temperature correction factors in Table 310.15(B)(2)(a)]. Thus the allowable ampacity is reduced to 16.75 amperes: 25 amperes x .67 = 16.75 amperes Incorrect answer. Please choose another answer.

95.	For track lighting installed in a retail store, a MAXIMUM of two (2) feet of lighting track or fraction thereof shall be considered _____ .
		a. 150 VA
		b. 180 VA
		c. 200 VA
		d. 100 VA
In compliance with Section 220.43(B), when calculating the number of branch circuits required, or the service or feeder load for track lighting, a load of 150 VA is to be included for every 2 ft. of lighting track or fraction thereof. Incorrect answer. Please choose another answer.

96.	Where a conduit longer than 24 inches contains two (2) ungrounded conductors, one (1) grounded conductor and one (1) equipment grounding conductor, the conduit is permitted to be filled to a MAXIMUM of_____ of its cross-sectional area.
		a. 53 percent
		b. 31 percent
		c. 40 percent
		d. 60 percent
Table 1 of Chapter 9 shows where a conduit or tubing contains more than 2 conductors, the raceway is permitted to be filled to 40% of its cross-sectional area. Incorrect answer. Please choose another answer.

97.	All of the following copper conductors are to be installed in an electrical metallic tubing (EMT) ten (10) feet long: 24 - size 10 AWG THHW 10 - size 10 AWG THHN 14 - size 12 AWG THHN Determine the MINIMUM trade size EMT required.
		a. 2 in.
		b. 2 in.
		c. 3 in.
		d. 3 in.
As shown, first calculate the total area occupied by the conductors, using Table 5 of Chapter 9: Size 10 AWG THHW = .0243 sq. in. x 24 = 0.5832 sq. in. Size 10 AWG THHN = .0211 sq. in. x 10 = 0.2110 sq. in. Size 12 AWG THHN = .0133 sq. in. x 14 = 0.1865 sq. in. Total = 0.9807 sq. in. Next, use Table 4 of Chapter 9 to select the proper trade size EMT permitted to enclose the conductors. Trade size 2 in. EMT with a 40% allowable fill of 1.342 sq. in. should be selected. Incorrect answer. Please choose another answer.

98.	In pull boxes or junction boxes having any dimension over _____, all conductors shall be cabled or racked up in an approved manner.
		a. 2 feet
		b. 3 feet
		c. 5 feet
		d. 6 feet
In order to readily identify and trace conductors in pull boxes or junction boxes having any dimension over 6 ft., Section 314.28(B) requires all conductors to be cabled or racked up in an approved manner. Incorrect answer. Please choose another answer.

99.	Where interlocked armor metal-clad cable (Type MC) is used as a wiring method to minimize the transmission of vibration from a motor, the cable is permitted to be unsupported where the cable is NOT more than _____ in length.
		a. 6 feet
		b. 3 feet
		c. 8 feet
		d. 10 feet
The provision at Section 330.30(D) permits interlocked armor Type MC cable to be unsupported in lengths not exceeding 3 feet from the last point of support. This would apply where flexibility is necessary to minimize the transmission of vibration from equipment such as motors. Incorrect answer. Please choose another answer.

100.	All 125-volt, single-phase, 15- and 20-ampere receptacle outlets installed in the following listed locations of dwelling units, shall be provided by a listed ground-fault circuit interrupter EXCEPT _____.
		a. garages
		b. bathrooms
		c. hallways
		d. outdoors
Sections 210.8(A)(1),(2)&(3) specifically require all 125-volt, single-phase 15- and 20-ampere receptacle outlets located in garages, bathrooms and outdoors of a dwelling unit to be provided with GFCI protection. Receptacle outlets located in hallways of dwelling units are not required to be GFCI protected. Incorrect answer. Please choose another answer.