2020 NEC Final exam 80 questions

Single conductor cables shall be __________ or larger and shall be of a type listed for use in cable trays. ( a ) #1 ( b ) #1 / 0 ( c ) #4 /0 ( d ) #250 kcmil

# 1 / 0 392.10(B)(1)(a)

A grounding conductor for a communications system shall NOT be smaller than _________. ( a ) # 16 ( b ) # 14 ( c ) # 6 ( d ) # 8

# 14 800.100(A)(3)

What size copper grounding electrode conductor is required for a #1500 kcMIL copper service conductor? ( a ) # 2 / 0 ( b ) # 3 / 0 ( c ) # 0 ( d ) # 2

# 3 / 0 T. 250.66

No conductor larger than __________ shall be installed in a cellular concrete floor raceway without special permission. ( a ) #2 ( b ) #4 ( c ) #1 / 0 ( d ) #1

#1 / 0 372.20

Except by special permission, no conductor larger than __________ shall be installed in cellular metal floor raceways. ( a ) #1 / 0 ( b ) #2 / 0 ( c ) #250 Kcmil ( d ) #500 Kcmil

#1 / 0 374.20

When outside overhead wiring is used, with no messenger cable, the minimum size copper wire allowed for spans up to 50 feet is __________. ( a ) #12 ( b ) #10 ( c ) #8 ( d ) #6

#10 225.6(A)(1)

What is the MINIMUM size underground service lateral for a copper - clad aluminum single - branch circuit serving a controlled water heater? ( a ) #14 ( b ) #12 ( c ) #10 ( d ) #8

#10 230.31(B) Exception

What is the MAXIMUM allowable AWG size for a solid conductor installed in a raceway? ( a ) #14 ( b ) #12 ( c ) #10 ( d ) #8

#10 310.3(C)

The minimum size of a copper equipment grounding conductor required for equipment connected to a 40 amp circuit is __________ . ( a ) #12 ( b ) #14 ( c ) #8 ( d ) #10

#10 T. 250.122

The largest size THHN conductor permitted in a 3/8" FMC is __________ . ( a ) #16 ( b ) #14 ( c ) #12 ( d ) #10

#10 T. 348.22

In closed construction in a manufacturing building cables shall be permitted to be secured only at cabinets, boxes, or fittings where __________ or smaller conductors are used and protected as required. ( a ) #2 AWG ( b ) #10 AWG ( c ) # 2 / 0 AWG ( d ) #250 kcmil

#10 AWG 545.4(B)

The frame of an electric range may be grounded by being connected to the grounded conductor of the 120 / 240 V branch circuit, if the grounded conductor is not less than a __________ copper. ( a ) #10 AWG ( b ) #8 AWG ( c ) #6 AWG ( d ) none of these

#10 AWG copper 250.140(2)

An outside feeder conductor having an overhead span of 45 feet shall NOT be less than __________ copper. ( a ) #14 ( b ) #12 ( c ) #10 ( d ) #8

#10 cu. 225.6(A)(1)

The minimum size copper equipment grounding conductor required on a motor branch circuit with a 30 amp circuit breaker and #12 copper conductors is __________. ( a ) #10 ( b ) #8 ( c ) #12 ( d ) #14

#12 250.122(A)

Lighting track conductors shall be a minimum __________ AWG or equal, and shall be copper. ( a ) #16 ( b ) #14 ( c ) #12 ( d ) #10

#12 410.155(A)

Pool - associated motors shall be connected to an equipment grounding conductor not smaller than # __________ . ( a ) 14 ( b ) 12 ( c ) 10 ( d ) 8

#12 AWG 680.21(A)(1)

Fixture wire shall be considered as protected by a 20 amp branch circuit breaker up to 50' if it is a __________ AWG. ( a ) #14 ( b ) #20 ( c ) #18 ( d ) #16

#14 AWG 240.5(B)(2)(1)

Unless part of listed decorative lighting assemblies, pendant conductors shall not be smaller than __________ for mogul - base or medium - base screw shell lamp holders or smaller than #18 AWG for intermediate or candelabra - base lamp holders. ( a ) #20 AWG ( b ) #18 AWG ( c ) #16 AWG ( d ) #14 AWG

#14 AWG 410.54(B)

Type P conductors shall be of tinned copper. Conductors shall employ flexible stranding. The minimum conductor size shall be __________. ( a ) #18 AWG ( b ) #16 AWG ( c ) #14 AWG ( d ) #12 AWG

#18 AWG 337.104

Insulated conductors smaller than __________ , intended for use as grounded conductors of circuits, shall have an outer identification of white or gray color. ( a ) #4 ( b ) #2 ( c ) #1 / 0 ( d ) #250 kcmil

#4 200.6(B)

Insulated bushing are required on conduit entering boxes, gutters, etc., if the conduit contains conductors as large as __________. ( a ) #2 ( b ) #4 ( c ) #0 ( d ) #6

#4 300.4(G)

What is the MINIMUM size copper grounding conductor required to serve a multi - section motor control center equipped with a 300 - amp overcurrent device? ( a ) #8 AWG ( b ) #6 AWG ( c ) #4 AWG ( d ) #2 AWG

#4 AWG T. 250.122 • 430.96

A single - family dwelling contains a 200 amp single - phase service panel supplied with a #2 / 0 THW conductors. The minimum size bonding jumper for this service is ___________. ( a ) #6 aluminum ( b ) #6 copper ( c ) #4 aluminum ( d ) #4 copper

#4 copper T. 250.102(C)(1)

The largest size grounding electrode conductor to a concrete - encased electrode is NOT required to be larger than __________ copper. ( a ) # 10 ( b ) # 8 ( c ) # 6 ( d ) # 4

#4 cu 250.66(B)

The bonding bar shall be connected to the grounding electrode with a minimum __________ copper conductor. ( a ) #6 ( b ) #4 ( c ) #2 ( d ) # 1 / 0

#6 250.94(4)

Utilization equipment weighing not more than 6 pounds shall be permitted to be supported on other boxes or plaster rings that are secured to other boxes, provided the equipment or its supporting yoke is secured to the box with no fewer than two __________ or larger screws. ( a ) #10 ( b ) #8 ( c ) #6 ( d ) #4

#6 314.27(D) Exception

Where two or more relocatable structures are structurally connected to form a single unit, it shall be permissible to install one communication system bonding jumper with a minimum __________ copper. ( a ) #10 AWG ( b ) #8 AWG ( c ) #6 AWG ( d ) #4 AWG

#6 AWG 545.27(3)

The smallest aluminum or copper - clad conductor permitted for service - entrance is __________. ( a ) #10 ( b ) #8 ( c ) #6 ( d ) #4

#6 aluminum 230.31(B)

__________ or larger conductors supported on solid knobs shall be securely tied thereto by tie wires having an insulation equivalent to that of the conductor. ( a ) #12 ( b ) #10 ( c ) #8 ( d ) #6

#8 398.30(E)

What size conductor shall be connected between the ground grid and all metal parts of swimming pools? ( a ) #8 ( b ) #10 ( c ) #6 ( d ) #4

#8 680.26(B)

The minimum size service - drop conductor permitted is a # __________ copper or # __________ aluminum. ( a ) 8, 8 ( b ) 8, 6 ( c ) 6, 8 ( d ) 6, 6

#8 cu, #6 al 230.23(B)

A receptacle to supply electric power to a recreational vehicle shall be which of the following configurations. ( a ) 50 - ampere -- 125 / 250 - volt, 50 - ampere, 3 - pole, 4 - wire grounding type for 120 / 240 - volt ( b ) 30 - ampere -- 125 - volt, 30 - ampere, 2 - pole, 4 - wire grounding type for 120 - volt systems ( c ) 20 - ampere -- 125 - volt, 20 - ampere, 3 - pole, 4 - wire grounding type for 120 - volt systems ( d ) 15 - ampere -- 125 - volt, 15 ampere, 2 - pole, 4 - wire grounding type for 120 - volt systems

( a ) 50 - ampere -- 125 / 250 - volt, 50 - ampere, 3 - pole, 4 - wire grounding type for 120 / 240 - volt 551.81(1)

Which of the following conditions apply to receptacle cover plate's NEC regulation __________? ( a ) Metal faceplate shall be of ferrous metal NOT less than 1.2mm ( 0.040 in.) in thickness and / or of non - ferrous metal NOT less than 0.76mm ( 0.030 in.) in thickness ( b ) Metal faceplate shall be ungrounded ( c ) Faceplate of insulating material shall be non - combustible and NOT less than 2.54 mm ( 0. 010 in.) in thickness but shall be permitted to be less than 2.54 mm ( 0.10 in ) in thickness if formed or reinforced to provide adequate mechanical strength considered suitable for damp locations. ( d ) all of the above

( c ) Faceplate of insulating material shall be non - combustible and NOT less than 2.54 mm ( 0. 010 in.) in thickness but shall be permitted to be less than 2.54 mm ( 0.10 in ) in thickness if formed or reinforced to provide adequate mechanical strength considered suitable for damp locations. 406.6(A, B, C)

A switch or circuit breaker should disconnect all grounded conductors of a circuit _________. ( a ) before it disconnects the undergrounded conductors ( b ) after it disconnects the ungrounded conductors ( c ) simultaneously as it disconnects the ungrounded conductors ( d ) none of these

( c ) simultaneously as it disconnects the ungrounded conductors 404.2(B) ex. 1

Where are conduit seals NOT required in a Class I installation? ( a ) Where metal conduit passes completely through the Class I area with no fittings less than 12" outside any classified area. ( b ) Where a conduit less than 36" in length connects two enclosures ( c ) Where the conduit enters an explosion - proof motor. ( d ) Where the conduit exits the Class I area.

(a) Where metal conduit passes completely through the Class I area with no fittings less than 12" outside any classified area. 501.15(A)(4) Exception No. 11

Conductors of AC or DC circuits rated 600 volts or less, shall be permitted to occupy the same conduit of __________. ( a ) all conductors shall have and insulation voltage rating equal to the maximum circuit voltage rating of any conductor in the conduit ( b ) all conductors shall have a 600 volt insulation rating ( c ) conductors must have a dividing barrier in the raceway ( d ) AC and DC are NOT permitted in the same raceway

(a) all conductors shall have and insulation voltage rating equal to the maximum circuit voltage rating of any conductor in the conduit 300.3(C)(1)

The National Electrical Code requires at least two small appliance branch circuits for dwellings. Either or both of these two circuits shall be permitted to supply circuits in which of the following four rooms? ( a ) Kitchen, dining room, recreation room, and breakfast room ( b ) Kitchen, dining room, breakfast room, and living room ( c ) Kitchen, pantry, breakfast room, and dining room ( d ) Kitchen, pantry, breakfast room and hallway

(c) Kitchen, pantry, breakfast room, and dining room 210.52(B)(1)

Of the following, __________ is NOT permitted for installation in cable trays. ( a ) non - metallic sheathed cable ( b ) multi - conductor service entrance cable ( c ) single conductor smaller than #1 / 0 ( d ) multi - conductor underground feeder and branch circuit cable.

(c) single conductor smaller than #1 / 0 392.10(B)(1)(a)

Which of the following is true? ( a ) The loads of outlets serving switchboards and switching frames in telephone exchanges shall be counted in branch - circuit computations. ( b ) A multiple receptacle shall be considered at NOT less than 420 va for computations of other outlets. ( c ) The minimum general lighting load for a restaurant is 3 va per square foot. ( d ) An electric clock may be connected to a small appliance branch - circuit.

(d) An electric clock may be connected to a small appliance branch - circuit. 210.52(B)(2) Exception No. 1

A metal underground water pipe, in direct contact with the earth for at least 10 feet, has traditionally been a preferred grounding electrode. For all new construction, a metal underground water pipe is __________. ( a ) no longer accepted as a grounding electrode ( b ) still the preferred grounding electrode, by itself, when available ( c ) accepted as the only grounding electrode when buried at least 3 feet below the surface ( d ) still an acceptable grounding electrode, but it must be supplemented by at least one additional grounding electrode.

(d) still an acceptable grounding electrode, but it must be supplemented by at least one additional grounding electrode. 250.53(D)(2)

Low ambient conditions require special consideration. Explosion - proof or dust - ignition - proof equipment may NOT be suitable for use at temperatures lower than __________ unless they are identified for low - temperature service. ( a ) -13° F ( b ) 20° C ( c ) 10° F ( d ) 15° F

-13° F 500.8 I.N. 3

The power in a circuit is 2 W and the voltage is 20 VDC. What is the circuit current? I = W / E ( a ) .10A ( b ) .20A ( c ) .30A ( d ) .40A

.10A

Where the calculated number of conductors, all of the same size, includes a decimal fraction, the next higher whole number shall be used if __________. ( a ) .5 and larger ( b ) .6 and larger ( c ) .7 and larger ( d ) .8 and larger

.8 and larger Chap. 9, Table 1, Note 7

An AC transformer and DC rectifier arc welder with a 70% duty cycle, the ampacity of the supply conductors shall be calcuated by multiplying the nameplate current by a factor of __________. ( a ) .78 ( b ) .84 ( c ) .89 ( d ) .95

.84 T. 630.11(A)

What is the area of square inches for a #8 bare conductor in a raceway? ( a ) 0.013 ( b ) 0.017 ( c ) 0.778 ( d ) 0.809

0.017 310.3(C) • Table 8

What is the area of square inch for a #12 RHW without covering? ( a ) 0.0353 ( b ) 0.0293 ( c ) 0.182 ( d ) 0.026

0.026 Table 5*

Metal faceplates for devices shall be of ferrous metal NOT less than _________ inches in thickness. ( a ) 0.300 ( b ) 0.003 ( c ) 0.030 ( d ) none of these

0.030 406.6(A)

What is the area of square inches for a #12 RHH with an outer covering? ( a ) 0.212 ( b ) 0.0353 ( c ) 0.0437 ( d ) 0.0293

0.0353 Table 5

A cabinet cut - out box if constructed of sheet metal, the metal thickness shall not be less than __________. ( a ) 0.053 ( b ) 0.503 ( c ) 0.040 ( d ) 0.373

0.053" 312.10(B)

Electrodes of nonferrous metal shall be at least __________ in thickness. ( a ) 0.06mm ( b ) .186" ( c ) 1.52" ( d ) 0.06"

0.06" 250.52(A)(7)

What is the minimum thickness of metal for a 6" x 4" x 3 - 1 / 4" box? ( a ) 0.0625" ( b ) 0.0747" ( c ) 15 MSG ( d ) 16 MSG

0.0625" 314.40(B)

Except where computations result in a major fraction of an ampere __________, such fractions may be dropped. ( a ) larger than 0.5 ( b ) 0.5 or larger ( c ) smaller than 0.5 ( d ) 0.8 or larger

0.5 or larger 220.5(B)

How much space is occupied by a #350 kcmil RHW grounding conductor without an outer covering? ( a ) 0.5958 square inches ( b ) 0.7870 square inches ( c ) 0.8710 square inches ( d ) 1.0010 square inches

0.5958 square inches Table 5

What size rigid PVC conduit schedule 40 is required for eight #6 XHHW conductors? ( a ) 3 / 4" ( b ) 1" ( c ) 1 - 1 / 4" ( d ) 1 - 1 / 2"

1 - 1 / 4" Tables 4 & 5

Cable or raceway that is installed through bored holes in wood members, holes shall be bores so that the edge of the hole is NOT less than 1 - 1 / 4" from the nearest edge of the wood member. Where this distance cannot b e maintained, the cable or raceway shall be protected from penetration by nails and screws by a steel plate or bushing, at least __________ inch thick, and of appropriate length and width installed to cover the area of the wiring. ( a ) 1 / 16 ( b ) 1 / 8 ( c ) 3 / 16 ( d ) 1 / 4

1 / 16" 300.4(A)(1)

The minimum spacing allowed between bare metal current - carrying parts to ground in a panelboard with voltage NOT exceeding 250 volts is ___________. ( a ) 1 / 2 " ( b ) 5 / 8" ( c ) 3 /4" ( d ) 1"

1 / 2" T. 408.56

Minimum and maximum sizes of EMT are __________ except for special installations. ( a ) 5 / 16" to 3" ( b ) 3 / 8" to 4" ( c ) 1 / 2" to 3" ( d ) 1 / 2" to 4"

1 / 2" to 4" 358.20(A & B)

Motor - starter rheostats for DC motor operated from a constant voltage supply must be equipped with automatic devices that will interrupt the power supply before the speed of the motor falls to __________ its normal value. ( a ) 1 / 3 ( b ) 1 / 2 ( c ) 2 / 3 ( d ) 3 / 4

1 / 3 430.82(C)(2)

Enclosures for overcurrent devices in damp or wet locations shall be identified for use in such locations and shall be mounted so there is at least __________ inch air space between the enclosure and the wall. ( a ) 1 / 4 ( b ) 3 / 8 ( c ) 3 / 4 ( d ) 1

1 / 4" 312.2

Where cable assemblies with nonmetallic sheathes are used, the sheath shall extend NOT less than __________ inside the box. ( a ) 6" ( b ) 3" ( c ) 1 / 2" ( d ) 1 / 4"

1 / 4" 314.17(B)(2)

A switch box installed in a tiled wall may be recessed __________ behind the finished wall. ( a ) 1 / 4" ( b ) 3 / 8" ( c ) 1 / 2" ( d ) NOT at all

1 / 4" 314.20

A spacing of not less than __________ shall be maintained between neon tubing and the nearest surface, other than its support. ( a ) 1 / 4" ( b ) 1 / 2" ( c ) 3 / 8" ( d ) 5 / 16"

1 / 4" 600.41(C)

Plaster, drywall or plasterboard surfaces that are broken or incomplete shall be repaired so there will be no gaps or open spaces greater than __________ inch at the edge of the fitting or box. ( a ) 1 / 16 ( b ) 1 / 8 ( c ) 3 / 16 ( d ) 1 / 4

1 / 8" 314.21

An office is to be wired with the number of receptacles unknown, the demand for the receptacles is __________ VA per square foot. ( a ) 1 ( b ) 3 ( c ) 3.5 ( d ) 180

1 VA 220.14(K)(2)

A splash pad is a fountain with a pool depth of __________ or less, intended for recreational use by pedestrians. ( a ) 1" ( b ) 3" ( c ) 5" ( d ) 6"

1" 680.2 DEF

A circuit contains two 2,000 ohm resistors connected in parallel. What is the total resistance of the circuit? ( a ) 888.8 Ohms ( b ) 1,000 Ohms ( c ) 1,200 Ohms ( d ) 4,000 Ohms 2,000 ohm / 2 = 1,000 Ohms

1,000 Ohms 2,000 ohm / 2 = 1,000 Ohms

A 1 - 1 / 2 " rigid metal nipple with three conductors can be filled to an area of __________ square inches. ( a ) 0.98 ( b ) 1.07 ( c ) 1.2426 ( d ) 1.34

1.2426 Table 4 (csa x 60%)

A 3" x 2" x 2" device box is how many cubic inches? ( a ) 12 ( b ) 14 ( c ) 10 ( d ) 8

10 cu. in. T. 314.16(A)

Conductors used exclusively for control or instrumentation smaller than #18 AWG, NOT smaller than #22 AWG for single conductor and #26 AWG for multiconductor cable are secured within __________ inches of termination. ( a ) 10 ( b ) 12 ( c ) 18 ( d ) 24

10" 312.8(B)(3)(b)(2)

What is the minimum height of a service drop attachment to a building? ( a ) 8 feet ( b ) 10 feet ( c ) 12 feet ( d ) 15 feet

10' 230.24(B)(1)

Electrical nonmetallic tubing shall be clearly and durably marked at least every __________ feet. ( a ) 3 ( b ) 6 ( c ) 8 ( d ) 10

10' 362.120

When supplying a nominal 120 volt rated air conditioner, the length of the flexible supply cord shall NOT exceed __________ feet. ( a ) 4 ( b ) 6 ( c ) 8 ( d ) 10

10' 440.64

The maximum length of exposed cord in a fountain shall be __________ feet. ( a ) 3 ( b ) 4 ( c ) 6 ( d ) 10

10' 680.51(E)

Rigid metal conduit shall be supported at least every __________ feet and shall be fastened in place within __________ feet of each box, outlet, cabinet or fitting, unless structural members interfere. ( a ) 5' ; 2' ( b ) 10' ; 3' ( c ) 10' ; 2' ( d ) 8' ; 3'

10' ; 3' 344.30(A) • 344.30(B)(1)

Panelboards shall not be permitted to be reconditioned. In the event the replacement has not been listed for the specific enclosure and the available fault current is greater than __________ amperes, the completed work shall be field labeled. ( a ) 10,000 ( b ) 7,500 ( c ) 5,000 ( d ) 2,500

10,000A 408.8(A)

Fixed electric space heating loads shall be computed at __________ percent of the total connected load; however, in no case shall a feeder load current be less than the rating of the largest branch circuit. ( a ) 80 ( b ) 100 ( c ) 115 ( d ) 125

100% 220.51

A single receptacle on an individual branch circuit shall have a MINIMUM rating of what percentage of the branch circuit's rating? ( a ) 50% ( b ) 70% ( c ) 80% ( d ) 100%

100% = equal 210.21(B)

A #16 fixture wire is considered protected by a 20 amp overcurrent device up to __________ feet. ( a ) 25 ( b ) 50 ( c ) 75 ( d ) 100

100' 240.5(B)(2)(2)

#0 copper conductors in vertical raceway shall be supported at intervals NOT exceeding __________ feet. ( a ) 50 ( b ) 75 ( c ) 100 ( d ) 125

100' T. 300.19(A)

A Class I power - limited circuit shall be supplied from a source having a rated output of NOT more than 30 volts and __________ volt amperes. ( a ) 1000 ( b ) 1200 ( c ) 1500 ( d ) 2000

1000 VA 725.41(A)

The minimum overcurrent protective device that feeds the floating building shall have ground - fault protection NOT exceeding __________ mA. ( a ) 6 ( b ) 25 ( c ) 50 ( d ) 100

100mA 555.53

What is the MAXIMUM allowable electrical potential for low - voltage equipment in frequent contact with patient's bodies? ( a ) 6 volts ( b ) 8 volts ( c ) 10 volts ( d ) 12 volts

10V 517.64(A)(1)

For the purpose of calculating branch - circuit and feeder loads, __________ is NOT a nominal system voltage. ( a ) 115 / 230 ( b ) 120 / 240 ( c ) 480Y / 277 ( d ) 600Y / 347

115 / 230 V 220.5(A)

The disconnecting means serving hermetic refrigerant motor - compressor shall be selected on the basis of the nameplate rated - load current or branch - circuit selection current of the motor - compressor. The ampere rating shall be at least __________ of the nameplate rated - load current. ( a ) 75% ( b ) 80 ( c ) 100% ( d ) 115%

115% 440.12(A)(1)

The minimum size disconnecting means allowed for a hermetic refrigerant motor - compressor is __________ of its nameplate rated - load current. ( a ) 100% ( b ) 115% ( c ) 125% ( d ) 130%

115% 440.12(A)(1)

The ampacity of ungrounded ( phase ) conductors from the generator terminals to the first overcurrent protection devices must not be less than __________ of the nameplate rating of the generator. ( a ) 80% ( b ) 100% ( c ) 115% ( d ) 125%

115% 445.13

The ampacity of a #250 kcmil IGS cable is __________ amperes. ( a ) 119 ( b ) 168 ( c ) 215 ( d ) 255

119A T. 326.80

In each kitchen and dining area, a receptacle outlet shall be installed at each counter space __________ inches or wider . ( a ) 12 ( b ) 24 ( c ) 36 ( d ) 48

12" 210.52(C)(3)

According to the Code, conductors on poles, where NOT placed on racks or brackets, shall be separated NOT less than __________ inches. ( a ) 6 ( b ) 12 ( c ) 18 ( d ) 24

12" 225.14(D)

The maximum distance that a SE cable strap can be from the meter base or service head is __________. ( a ) 6" ( b ) 12" ( c ) 18" ( d ) 24"

12" 230.51(A)

Nonmetallic sheath cable must be supported within __________ of a metal box. ( a ) 6" ( b ) 12" ( c ) 24" ( d ) 48"

12" 334.30

Vending machines shall include a GFCI as an integral part of the attachment plug or located in the power supply cord within __________ of the attachment plug. ( a ) 12" ( b ) 16" ( c ) 18" ( d ) 24"

12" 422.5(A)(5) • 422.5(B)(3 & 4)

Single - phase cord - and - plug - connected room air conditioners shall be provided with factory - installed LCDI or AFCI protection. The LCDI or AFCI protection shall be an integral part of the attachment plug or be located in the power supply cord within 300mm or _________ in. of the attachment plug. ( a ) 12 ( b ) 14 ( c ) 20 ( d ) 30

12" 440.65

Electrical connections shall be located at least __________ above the deck of a floating pier. ( a ) 6" ( b ) 8" ( c ) 10" ( d ) 12"

12" 555.30(A)

Cables buried directly in earth for residential branch circuits rated 120 volts or less with GFCI protection and maximum protection of 20 amps shall be permitted with a minimum cover of __________. ( a ) 6" ( b ) 12" ( c ) 18" ( d ) 24"

12" T. 300.5

What is the minimum cover requirement for UF cable supplying power to a 120 volt, 15 amp GFCI protected circuit outdoors under a driveway of a one - family dwelling? ( a ) 6" ( b ) 12" ( c ) 18" ( d ) 24"

12" Table 300.5 Column 4

The minimum clearance between luminaires installed in clothes closets and the nearest point of a closet storage shall be __________ for surface - mounted incandescent or LED luminaires with a completely enclosed light source on the wall above the door on the ceiling and __________ for surface - mounted fluorescent luminaires installed on the wall above the door or ceiling. ( a ) 6" ; 6" ( b ) 12" ; 6" ( c ) 6" ; 12" ( d ) 12" ; 12"

12" ; 6" 410.16(C)(1) & (C)(2)

A single 1500W cord - and - plug connected load on 120V would draw __________ amps, this requires a number __________ wire and __________ circuit breaker for the branch circuit. ( a ) 8 - #14 - 15 amp ( b ) 10.5 - #14 - 15 amp ( c ) 12.5 - #14 - 15 amp ( d ) 12.5 - #12 - 20 amp

12.5 - #12 - 20 amp 210.23(A)

Water heaters having a capacity of __________ gallons or less shall have a branch circuit rating less NOT than 125% of the rating of the water heater. ( a ) 60 ( b ) 75 ( c ) 90 ( d ) 120

120 gallons 422.13

The maximum voltage allowed to supply listed electric - discharge lighting in residences, hotels, motels, and similar occupancies is __________. ( a ) 120 volts ( b ) 208 volts ( c ) 240 volts ( d ) 277 volts

120 volts 210.6(A)

A circuit breaker with a slash rating of 120 / 240 is rated for what voltage to ground? ( a ) 115 volts to ground ( b ) 120 volts to ground ( c ) 240 volts to ground ( d ) Any voltage up to 240

120 volts to ground 240.85

HDPE is NOT permitted where it will be subjected to ambient temperatures in excess of __________. ( a ) 194° F ( b ) 167° F ( c ) 140° F ( d ) 122° F

122° F 353.12(4)

Where a brunch circuit supplies a continuous and non - continuous load, the rating of the overcurrent device shall be NOT less than the sum of the non - continuous load plus __________ of the continuous load. ( a ) 70% ( b ) 75% ( c ) 100% ( d ) 125%

125% 210.20(A)

The minimum feeder - circuit conductor size, before the application of any adjustment or correction factors, shall have an allowable ampacity equal to or greater than the non - continuous load plus ___________ percent of the continuous load. ( a ) 100 ( b ) 125 ( c ) 80 ( d ) 75

125% 215.2(A)(1)(a)

Circuit conductors supplying power conversion equipment as part of an adjustable - speed drive system shall have an ampacity of NOT less than __________ of the rated input. ( a ) 110% ( b ) 115% ( c ) 125% ( d ) 140%

125% 430.122(A)

The branch - circuit conductors supplying one or more units of a data processing system shall have an ampacity NOT less than __________ of the total connected load. ( a ) 75% ( b ) 100% ( c ) 110% ( d ) 125%

125% 645.5(A)

A transformer is installed in an industrial plant to reduce a 1,200 volt supply to 480. The transformer is rated at 7.5% impedance. The location is unsupervised. What is the MAXIMUM setting for the overcurrent device on the secondary side? ( a ) 125% of the transformer rating ( b ) Equal to the transformer rating ( c ) 225% of the transformer rating ( d ) 250% of the transformer rating

125% of the transformer rating 450.3 • T. 450.3(A)

The ampacity of capacitor circuit conductors shall NOT be less than __________ percent of the rated current of the capacitor. ( a ) 100 ( b ) 115 ( c ) 135 ( d ) 150

135% 460.8(A)

Electric sign and outline lighting system equipment shall be at least 4.3 meters or _________ above areas accessible to vehicles protected from physical damage. ( a ) 10 feet ( b ) 12 feet ( c ) 14 feet ( d ) 24 feet

14' 600.9(A)

Sign lighting system equipment shall be at least __________ feet above areas accessible to vehicles unless protected from physical damage. ( a ) 14 ( b ) 15 ( c ) 18 ( d ) 22

14' 600.9(A)

Straight runs of 1 - 1 /4" rigid metal conduit may be secured at not more than __________ intervals. ( a ) 5' ( b ) 10' ( c ) 12' ( d ) 14'

14' T. 344.30(B)(2)

A 2 HP motor has a service factor of 1.15. What is the MAXIMUM percentage rating for the overload protection. ( a ) 115% ( b ) 125% ( c ) 130% ( d ) 140%

140% 430.32(C)

A 50 HP, 208 V, 3 ø, squirrel cage motor has a full - load current of __________ amps. ( a ) 130 ( b ) 143 ( c ) 162 ( d ) 195

143 A T. 430.250

A circuit containing #12 THHN conductors is a __________ rated circuit when protected by a 15 amp rated circuit breaker. ( a ) 25 amp ( b ) 20 amp ( c ) 15 amp ( d ) 30 amp

15 amp 210.18

Where a motor is connected to a branch circuit by means of an attachment plug and receptacle and individual overload protection is omitted, the rating of the attachment plug and receptacle shall NOT exceed __________ or 250 volts. ( a ) 15 amperes at 110 volts ( b ) 20 amperes at 115 volts ( c ) 25 amperes at 120 volts ( d ) 15 amperes at 125 volts

15 amperes at 125 volts 430.42(C)

The minimum allowed rating for the service disconnect of a single circuit installation is __________. ( a ) 15 amps ( b ) 20 amps ( c ) 25 amps ( d ) 30 amps

15 amps 230.79(A)

The maximum overcurrent protection for a #14 copper THHN wire installed in a raceway is __________ amperes. ( a ) 12 ( b ) 15 ( c ) 16 ( d ) 20

15 amps 240.4(D)(3)

The rating of an attachment plug and receptacle must NOT exceed __________ @ 250 volts for a cord - and - plug connected air conditioner. ( a ) 15 amps ( b ) 20 amps ( c ) 25 amps ( d ) 30 amps

15 amps 440.55(B)

Receptacles installed on __________ ampere branch circuits, shall be of the grounding type. ( a ) 15 and 20 ( b ) 25 ( c ) 30 ( d ) 40

15 and 20 406.4(A)

Generators with greater than __________ rating shall be provided with a remote emergency stop switch to shut down the prime mover. ( a ) 5 kW ( b ) 7.5 kW ( c ) 10 kW ( d ) 15 kW

15 kW 445.18(C)

Transformers shall have a secondary short circuit current of not more than __________ mA if the open circuit voltage is over 7500 volts. ( a ) 150 ( b ) 200 ( c ) 300 ( d ) 500

150 mA 410.143(C)

Plug fuses and fuse holders shall NOT be used between conductors and the grounded neutral in circuits exceeding how many volts? ( a ) 50 volts ( b ) 100 volts ( c ) 115 volts ( d ) 150 volts

150 volts 240.50(A)(2)

The maximum voltage between conductors for lighting fixtures in a swimming pool is __________. ( a ) 115 volts ( b ) 120 volts ( c ) 125 volts ( d ) 150 volts

150 volts 680.23(A)(4)

Plug fuses and fuse - holders can be used in circuits supplied by a system having a grounded neutral and having no conductor at over __________ volts to ground. ( a ) 115 ( b ) 120 ( c ) 125 ( d ) 150

150V 240.50(A)(2)

Mats of insulating rubber or other suitable floor insulation shall be provided for the operator where the voltage to ground exceeds __________ volts on live - front switchboards. ( a ) 50 ( b ) 100 ( c ) 120 ( d ) 150

150V 250.174(C)

No swimming pool lighting fixtures shall be installed for operation on supply circuits over __________ volts between conductors. ( a ) 24 ( b ) 50 ( c ) 120 ( d ) 150

150V 680.23(A)(4)

The maximum voltage permitted for operation of a lighting fixture installed in a swimming pool is __________ volts. ( a ) 120 ( b ) 150 ( c ) 277 ( d ) 300

150V 680.23(A)(4)

The smallest standard size plug - fuse rating for use on a residential 120 volt branch - circuit is __________ amperes. ( a ) 10 ( b ) 12 ( c ) 15 ( d ) 20

15A 240.6(A)

A 20 ampere rated branch circuit serves four receptacles. The rating of the receptacles must not be less than __________ amperes. ( a ) 20 ( b ) 15 ( c ) 25 ( d ) none of these

15A T. 210.24

2" rigid metal conduit shall be supported every __________ feet. ( a ) 10 ( b ) 12 ( c ) 14 ( d ) 16

16' T. 344.30(B)(2)

The minimum radius of the inside of a bend for a 3 / 4 " flexible metallic tubing used for flexing is __________ inches. ( a ) 17 - 1 / 2 ( b ) 12 - 1 / 2 ( c ) 10 ( d ) 5

17 - 1 / 2" T. 360.24(A)

The maximum rating or setting of Time delay fuses ( dual element) (branch - circuit and ground - fault device) shall NOT exceed __________ of AC single phase motor values. ( a ) 175% ( b ) 250% ( c ) 300% ( d ) 800%

175% T. 430.52

Floor boxes shall be considered to meet the requirements of the spacing of receptacles on walls if they are within __________ to the wall. ( a ) 18" ( b ) 20" ( c ) 24" ( d ) 30"

18" 210.52(A)(3)

When using 2 - 1 / 2" rigid steel conduit for a through - the - roof 120 / 240 Volt service mast, the minimum distance the conduit can protrude above the roof is __________. ( a ) 12" ( b ) 18" ( c ) 24" ( d ) 30"

18" 230.24(A) Exception No. 3

Where used outside, aluminum or copper-clad aluminum grounding conductors shall NOT be terminated within __________ inches of the earth. ( a ) 24 ( b ) 18 ( c ) 30 ( d ) 36

18" 250.64(A)

A metal elbow installed underground in a run of nonmetallic conduit is NOT required to be grounded, if it is isolated by a minimum over of at least __________ inches to any part of the elbow. ( a ) 6 ( b ) 12 ( c ) 18 ( d ) 24

18" 250.86 Exception No. 3 ( 1 )

In a recreational vehicle, the maximum distance the supply may run inside the vehicle before it must have overcurrent protection is __________. ( a ) 18" ( b ) 3' ( c ) 6' ( d ) 12'

18" 551.30(E)

Except where otherwise allowed, underwater lighting fixtures in the walls of permanently installed pools shall have the top of the fixture at least __________ below the normal water level of the pool. ( a ) 6" ( b ) 12" ( c ) 18" ( d ) 24"

18" 680.23(A)(5)

Rigid schedule 80 PVC shall have a minimum burial depth of __________ inches. ( a ) 6 ( b ) 10 ( c ) 18 ( d ) 24

18" T. 300.5

The minimum clearance for service drops, not exceeding 600 volts, over commercial areas subject to truck traffic is __________ feet. ( a ) 10 ( b ) 12 ( c ) 15 ( d ) 18

18' 230.24(B)(4)

The clearance for 6900V to ground conductors over open land subject to cultivation is __________ . ( a ) 12' ( b ) 15' ( c ) 18.5' ( d ) 22'

18.5' T. 225.60

DC motors operating from a rectifier bridge of the single - phase half - wave power supply, the conductors between the field wiring terminals of the rectifier and the motor shall have an ampacity of not less than _________ of the motor full - load current rating. ( a ) 120% ( b ) 125% ( c ) 150% ( d ) 190%

190% 430.22(A)(1)

Boxes that enclose utilization equipment supplied by #8, #6, or #4 conductors shall have an internal depth that is NOT less than __________. ( a ) 7 / 8" ( b ) 1 - 1 / 16" ( c ) 1 - 3 / 16" ( d ) 2 - 1 / 16"

2 - 1 / 16" 314.24(B)(3)

Flexible cables, as identified in Article 400, in sizes __________ and larger shall be permitted within the battery enclosure from the battery terminals to a nearby junction box where they will be connected to an approved wiring method. ( a ) 6 AWG ( b ) 4 AWG ( c ) 1 / 0 AWG ( d ) 2 / 0 AWG

2 / 0 AWG 480.12

The volume per #14 conductor required in a box is __________ cubic inch. ( a ) 2.25 ( b ) 2 ( c ) 3 ( d ) 2.5

2 cu. in. T. 314.16(B)

Nonmetallic surface extensions with one or more extensions shall be permitted to be run in any direction from an existing outlet, but NOT on the floor or within __________ inches from the floor. ( a ) 6 ( b ) 4 ( c ) 3 ( d ) 2

2" 382.15

The splice connection between non - heating lead and heating element, within concrete, masonry, or asphalt, shall be located no less than 1" and no more than __________ from the metal raceway. ( a ) 2" ( b ) 4" ( c ) 6" ( d ) 8"

2" 426.22(B)

Communication wires and cables shall be separated at least __________ from conductors of any electronic light or power circuits, Class I, or non - power - limited fire alarm circuits, or medium power network powered broadband communications circuits. ( a ) 0" ( b ) 2" ( c ) 4" ( d ) 6"

2" 805.133(A)(2)

A mobile home disconnecting means shall be located NOT less than __________ above the finished grade or working platform. ( a ) 2' ( b ) 3' ( c ) 4' ( d ) 4 1 / 2'

2' 550.32(F)

Post, pedestal, and raised concrete pad types of electrical truck parking space supply equipment shall NOT be less than __________ above ground or above the point identified as the prevailing highest water level mark or an equivalent benchmark based on seasonal or storm - driven flooding from the AHJ. ( a ) 2' ( b ) 2 - 1 / 2' ( c ) 36" ( d ) 42"

2' 626.22(B)

What is the cross - sectional area of a 1 1 / 2" rigid metal conduit? ( a ) 2.071 ( b ) .829 ( c ) 3.408 ( d ) 1.624

2.071 Table 4

When installing a ground ring, the installation must be installed a minimum of __________ feet deep and the length must be at least __________ feet long. ( a ) 2.5' , 10' ( b ) 2' , 20' ( c ) 2.5' , 20' ( d ) 3' , 30'

2.5' , 20' 250.52(A)(4) • 250.53(F)

The nominal gas pressure for IGS cable insulation shall be __________ pounds per square inch gauge. ( a ) 5 ( b ) 10 ( c ) 15 ( d ) 20

20 lbs. 326.112

A bare #4 conductor may be concrete encased and serve as the grounding electrode when at least __________ feet in length. ( a ) 10 ( b ) 12 ( c ) 20 ( d ) 15

20' 250.52(A)(3)

A bare #4 copper conductor installed near the bottom of a concrete footing that is in direct contact with earth may be used as a grounding electrode conductor when the conductor is at least __________ feet in length. ( a ) 10' ( b ) 15' ( c ) 20' ( d ) 25'

20' 250.52(A)(3)

Exposed vertical risers of IMC for industrial machinery or fixed equipment can be supported at intervals not exceeding __________ feet if the conduit is made up with threaded couplings, firmly supported at the top and bottom of the riser, and no other means of support is available. ( a ) 12 ( b ) 15 ( c ) 20 ( d ) 25

20' 342.30(B)(3)

Conductors and cables shall be routed to avoid wiring closer than __________ from the outer edge or any portion of the yard that can be used for mounting vessels or stepping or un - stepping masts. ( a ) 20' ( b ) 30' ( c ) 50' ( d ) 100'

20' 555.34(B)(1)

Receptacles located within __________ feet of the inside walls of a pool shall be protected by a ground - fault circuit - interrupter. ( a ) 8 ( b ) 10 ( c ) 15 ( d ) 20

20' 680.22(A)(4)

Minimum headroom shall be provided for all working spaces about service equipment, switchboards, panelboards, or motor control centers except in service equipment or panelboards in dwelling units that do NOT exceed __________ amperes. ( a ) 150 ( b ) 200 ( c ) 175 ( d ) 300

200A 110.26(A)(3) Exception No. 2

A 200 ampere panelboard may supply a maximum load of __________ amperes. ( a ) 200 ( b ) 180 ( c ) 160 ( d ) 150

200A 408.30

In a dwelling, a 20 ampere living room branch circuit can be loaded to a maximum of __________ amperes. ( a ) 10 ( b ) 15 ( c ) 16 ( d ) 20

20A 210.23 • T. 210.24

Sign circuits that supply signs and outline lighting systems containing incandescent, fluorescent and high - intensity discharge forms of illumination shall be rated NOT to exceed __________ amperes. ( a ) 15 ( b ) 20 ( c ) 25 ( d ) 30

20A 600.5(B)(2)

Unsupported runs of armored cable shall be permitted to be unsupported where the cable is NOT more than ______ inches at terminals where flexibility is necessary. ( a ) 24 ( b ) 30 ( c ) 36 ( d ) 48

24" 320.30(D)(2)

An outdoor disconnecting means for a mobile home must be installed so the bottom of the enclosure is NOT less than ​__________ above the finished grade or working platform. ( a ) 12" ( b ) 18" ( c ) 24" ( d ) 30"

24" 550.32(F)

In land areas subject to tidal fluctuation, the electrical datum plane shall be a horizontal plane that is __________ above the highest tide level for the area occurring under normal circumstances based on the highest tide level. ( a ) 24" ( b ) 3' ( c ) 42" ( d ) 4'

24" 555.3(B)

Rigid conduit buried in an area subject to heavy vehicular traffic shall have a minimum cover of __________ inches. ( a ) 6 ( b ) 12 ( c ) 18 ( d ) 24

24" T. 300.5

Which of the following is NOT a standard classification for a branch circuit supplying several loads? ( a ) 20 Amp ( b ) 25 Amp ( c ) 30 Amp ( d ) 50 Amp

25 A 210.18

At least one 125 - volt, single-phase, 15 - or 20 - ampere - rated receptacle outlet shall be installed within __________ of the service equipment requiring servicing. ( a ) 6' ( b ) 10' ( c ) 25' ( d ) 50'

25 feet 210.63

Each transformer shall be provided with a nameplate giving the name of the manufacturer; rated kV; frequency; primary and secondary voltage; impedance of transformers __________ kVA and larger. ( a ) 112 - 1 / 2 ( b ) 25 ( c ) 33 ( d ) 50

25 kVA 450.11(5)

Transformers rated __________ kVA or larger are required to have their impedance marked on the nameplate. ( a ) 7.5 ( b ) 12 ( c ) 15 ( d ) 25

25 kVA 450.11(A)(5)

A feeder tap in a raceway terminating in a single circuit breaker with an ampacity 1 / 3 of the feeder conductors may extend not over __________ feet. ( a ) 6 ( b ) 10 ( c ) 25 ( d ) 50

25' 240.21(B)(2)

Grounding of a metal raceway used to protect Romex is required if the raceway is __________ feet or over, or within reach of ground or grounded metal. ( a ) 6 ( b ) 8 ( c ) 10 ( d ) 25

25' 250.86 Exception No. 1(2)

Heavy - duty lamps are used on __________ ampere or larger circuits. ( a ) 15 ( b ) 20 ( c ) 25 ( d ) 30

25A 210.21(A)

A single grounding electrode is permitted when the resistance to ground does NOT exceed __________ ohms. ( a ) 5 ( b ) 10 ( c ) 15 ( d ) 25

25Ω 250.53(A)(2) Exception

Round access openings in a manhole shall NOT be less than _________ in diameter. ( a ) 16" ( b ) 18" ( c ) 24" ( d ) 26"

26" 110.75(A)

The minimum number of overload unit ( s ) required for a three - phase motor is __________ . ( a ) 1 ( b ) 2 ( c ) 3 ( d ) 4

3 T. 430.37

Where a metal lamp holder is attached to a flexible cord, the inlet shall be equipped with an insulating bushing which, if threaded, shall not be smaller than nominal __________ inch pipe size. ( a ) 1 / 4 ( b ) 3 / 8 ( c ) 1 / 2 ( d ) 5 / 8

3 / 8" 410.62(A)

The ampacity of a 60° C #22 AWG copper conductor located in a permanent amusement attraction where the ambient temperature is 30° C is __________ . ( a ) 0.8 ( b ) 2 ( c ) 3 ( d ) 5

3 A T. 522.22 Notes

An all - electric home has a laundry area located in a kitchen closet. What is the MINIMUM number of branch circuits serving this kitchen? ( a ) 2 circuits ( b ) 3 circuits ( c ) 4 circuits ( d ) 5 circuits

3 circuits 210.11(C)(1, 2) • 210.52(B)(1)

The number of #12 conductors permitted in a 3" x 2" x 1 - 1 / 2" deep device box is ____________ conductors. ( a ) 6 ( b ) 5 ( c ) 4 ( d ) 3

3 conductors T. 314.16(A)

The floors of vaults constructed with a vacant space or other stories below it, the floor shall have adequate structural strength for the load imposed on it and a minimum fire resistance of __________ hours. ( a ) 3 ( b ) 4 ( c ) 5 ( d ) 6

3 hours 110.31(A)(1)

When the opening to an outlet, junction, or switch point is less than 8" in any dimension, each conductor must be long enough to extend at least __________ outside the opening of the enclosure. ( a ) 2" ( b ) 3" ( c ) 4" ( d ) 6"

3" 300.14

Thermal insulation shall NOT be installed within __________ of a recessed light fixture enclosure unless the recessed light fixture is identified as suitable for direct contact with insulation. ( a ) 1 / 2" ( b ) 2" ( c ) 3" ( d ) 6"

3" 410.116(B)

When wiring a dwelling's bathroom you shall install at least one receptacle no less than __________ feet outside edge of the basin. ( a ) 6 ( b ) 5 ( c ) 3 ( d ) 2

3' 210.52(D)

Distances from signs, radio, and TV antennae, tanks or other non - building or non - bridge structures clearances, vertical, diagonal and horizontal, shall NOT be less than __________ feet. ( a ) 2 ( b ) 3 ( c ) 6 ( d ) 8

3' 225.19(B)

Conductors run above the top level of a window shall be permitted to be less than the __________ requirement for clearance from a window. ( a ) 2' ( b ) 3' ( c ) 4' ( d ) 8'

3' 230.9 Exception

No parts of pendants shall be located within a zone measured __________ feet horizontally and 8 feet vertically from the top of the bathtub rim. ( a ) 2 ( b ) 3 ( c ) 4 ( d ) 6

3' 410.10(D)(1)

In a dwelling, the minimum feeder neutral for a 5 kVA clothes washer / dryer would be __________ kVA. ( a ) 5 ( b ) 4.3 ( c ) 3.5 ( d ) 3.0

3.5 kVA Annex D example D2b

In panelboards, where voltage on busbars is 150 volts and the bars are opposite polarity, held in free air, the minimum spacing between parts is __________ . ( a ) 3/4" ( b ) 1" ( c ) 1 1/2" ( d ) 2"

3/4" T. 408.56

Insulated conductors shall be a thermoset type identified for use in Type P cable. All conductors shall be suitable for wet conditions. The minimum wall thickness shall be __________ mils. ( a ) 26 ( b ) 30 ( c ) 35 ( d ) 37

30 mils 337.112

Working space for equipment operating at 600 volts, nominal, or less to ground and likely to require examination, adjustment, servicing, or maintenance with exposed live parts on one side shall be __________ inches wide or the width of the panel or enclosure allowing the door ( s ) to open 90 degrees. ( a ) 12 ( b ) 24 ( c ) 30 ( d ) 36

30" 110.26(A)(2)

Service cables mounted in contact with a building shall be supported at intervals not exceeding __________ . ( a ) 30" ( b ) 48" ( c ) 52" ( d ) 6'

30" 230.51(A)

Type 3 SPD connection shall be a minimum __________ feet of conductor distance from the service or separately derived system disconnect. ( a ) 10 ( b ) 15 ( c ) 25 ( d ) 30

30' 242.16

In general, the voltage limitation between conductors in surface metal raceways is ___________ volts. ( a ) 300 ( b ) 500 ( c ) 600 ( d ) 1000

300 V 386.12(2)

An autotransformer which is used to raise the voltage to more than __________ volts, as part of a ballast for supplying lighting units, shall be supplied by a grounded system. ( a ) 300 ( b ) 150 ( c ) 125 ( d ) 50

300 V 410.138

Fixed appliances rated at NOT over __________ volt - amperes or 1 / 8 HP, the branch circuit overcurrent device shall be permitted to serve as the disconnecting means. ( a ) 240 ( b ) 300 ( c ) 400 ( d ) 480

300 VA 422.31(A)

Unless identified as suitable for use with infrared heating lamps, screw - shell lamp holders shall NOT be used with infrared lamps over __________ watts rating. ( a ) 150 ( b ) 300 ( c ) 5000 ( d ) none of these

300 Watts 422.48(B)

Conductors that supply one or more welders shall be protected by an overcurrent device rated or set at NOT more than __________ of the conductor rating. ( a ) 80% ( b ) 125% ( c ) 150% ( d ) 300%

300% 630.32(B)

Unless identified specifically for that use, screw - shell lamp holders shall not be used with infrared lamps over __________ watts. ( a ) 50 ( b ) 100 ( c ) 150 ( d ) 300

300W 422.48(B)

The branch circuit rating for flat cable assemblies shall not exceed __________ amperes. ( a ) 15 ( b ) 20 ( c ) 25 ( d ) 30

30A 322.10(1)

FCC cable can have individual branch circuits with a rating not exceeding __________ amperes. ( a ) 15 ( b ) 20 ( c ) 25 ( d ) 30

30A 324.10(B)(2)

Branch circuits feeding neon tubing installations must NOT be rated in excess of __________ amperes. ( a ) 12 ( b ) 15 ( c ) 24 ( d ) 30

30A 600.5(B)(1)

Unless protected by ground - fault circuit - interrupter protection for personnel, the secondary winding of the isolation transformer connected to the pipeline or vessel being heated shall NOT have an output voltage greater than __________ volts AC. ( a ) 10 ( b ) 25 ( c ) 30 ( d ) 35

30V 427.27

In readily accessible locations, turbine output circuits that operate at voltages greater than __________ shall be installed in raceways. ( a ) 12V ( b ) 20V ( c ) 24V ( d ) 30V

30V 694.30

The secondary winding of the isolation transformer connected to impedance heating elements shall NOT have an output voltage greater than __________ volts AC. ( a ) 25 ( b ) 30 ( c ) 60 ( d ) 80

30V 694.30

Feeder and branch circuit conductors that are installed on piers shall be provided with ground - fault protection NOT exceeding ___________ mA. ( a ) 5 ( b) 6 ( c ) 25 ( d ) 30

30mA 682.15(B)

A feeder tap less than 25' long does NOT require overcurrent protection at the tap is at least ________. ( a ) 20% of the feeder conductor ( b ) 33 - 1 / 3% of the feeder conductor ( c ) 40% of the feeder conductor ( d ) 50% of the feeder conductor

33 - 1 / 3% of the feeder conductor 240.21(B)(2)(1)

The ampacity of conductors that connect a capacitor to the terminals of a motor shall NOT be less than __________ of the ampacity of the motor circuit conductors. ( a ) 33% ( b ) 50% ( c ) 75% ( d ) 80%

33% = one third 460.8(A)

Transformers insulated with a dielectric fluid installed indoors and rated over __________ shall be installed in a vault. ( a ) 112 1 / 2 kVA ( b ) 35,000 VA ( c ) 35 kV ( d ) 35 kVA

35 kV 450.24

Type MV cables shall be permitted for use on power systems rated up to __________ volts. ( a ) 600 ( b ) 4160 ( c ) 2300 ( d ) 35,000

35,000 V 311.32

The power supply cord to a mobile home must NOT be longer than __________ feet. ( a ) 21 ( b ) 26 - 1 / 2 ( c ) 36 - 1 / 2 ( d ) 50

36 - 1 / 2' 550.10(D)

Service conductors shall have a clearance of not less than __________ from the sides of openable windows. ( a ) 24" ( b ) 30" ( c ) 36" ( d ) 48"

36" 230.9

For other than a totally enclosed switchboard or switchgear, a space of NOT less than __________ shall be provided between the top of the switchboard and any combustible ceiling, unless a non - combustible shield is provided between the switchboard and the ceiling. ( a ) 18" ( b ) 2' ( c ) 30" ( d ) 36"

36" 408.18(A)

Pendant conductors longer than __________ shall be twisted together where NOT cabled in a listed assembly. ( a ) 18" ( b ) 20" ( c ) 24" ( d ) 36"

36" 410.54(C)

When pendant conductors are longer than ___________, they shall be twisted together. ( a ) 12" ( b ) 18" ( c ) 24" ( d ) 36"

36" 410.54(C)

Live parts exposed on the front of the switchboard are present, the working space in front of the switchboard shall NOT be less than __________ inches. ( a ) 24 ( b ) 30 ( c ) 36 ( d ) 42

36" T. 110.26(A)(1)

The working clearance in front of a 2300 volt switchboard to a wooden wall is __________. ( a ) 30" ( b ) 36" ( c ) 42" ( d ) 48"

36" T. 110.34(A)

Type FCC cable, cable connectors, and insulating ends shall be covered with carpet squares no larger than __________ square. ( a ) 24" ( b ) 914" ( c ) 36 mm ( d ) 39.37"

39.37" 324.41

Flexible metal conduit shall be secured by approved means at intervals NOT exceeding __________ feet within 12" on each side of every outlet box. ( a ) 2 ( b ) 4 ( c ) 4 - 1 / 2 ( d ) 8

4 - 1 / 2" 348.30(A)

In a hospital General Care Area, each patient bed location shall be provided with a minimum of __________ receptacles. ( a ) 3 single ( b ) 2 single or 1 duplex ( c ) 2 duplex or 4 single ( d ) 4 duplex or 8 single

4 duplex or 8 single 517.18(B)(1)

The floors of vaults in contact with the earth shall be of concrete that is NOT less than __________ thick for equipment over 600 volts. ( a ) 2" ( b ) 4" ( c ) 6" ( d ) 8"

4" 110.31(A)(2)

Heaters installed within __________ feet of the outlet of an air - moving device, heat pump, A / C, elbows, baffle plates, or other obstructions in duct work may require turning vanes, pressure plates, or other devices on the inlet side of the duct heater to assure an even distribution of air over the face of the heater. ( a ) 2 ( b ) 3 ( c ) 4 ( d ) 6

4' 424.59 Informational Note

The locked rotor kVA per HP rating for a code letter design "E" motor shall be __________. ( a ) 3.2 - 3.9 ( b ) 4.5 - 4.99 ( c ) 2.2 - 2.6 ( d ) 6.0 - 6.5

4.5 - 4.99 T. 430.7(B)

A cable bundle is a group of cables that are tied together or in contact with one another in a closely paced configuration for at least __________ inches. ( a ) 12 ( b ) 24 ( c ) 36 ( d ) 40

40" 725.2 DEF

Underfloor raceways may be occupied up to __________ percent of the area. ( a ) 55 ( b ) 30 ( c ) 40 ( d ) 38

40% 390.22

The maximum number of overcurrent devices ( other than those provided for in the mains ) in a single cabinet of a lighting and appliance panelboard shall be __________. ( a ) 24 ( b ) 32 ( c ) 36 ( d ) 42

42" 408.36 Exception No. 2

The minimum working space in front of a 480 volt panel to a concrete wall is __________. ( a ) 24" ( b ) 30" ( c ) 42" ( d ) 48"

42" T. 110.26(A)(1) Condition 2

424.101(A) Low voltage heating power unit shall be an isolating type with a rated output NOT exceeding __________ volts peak ac. ( a ) 30 ( b ) 42.4 ( c ) 60 ( d ) 25

42.4V peak AC 424.101(A)

A raceway containing 30 current - carrying conductors, the ampacity of each conductor shall be reduced __________ percent. ( a ) 80 ( b ) 70 ( c ) 45 ( d ) 50

45% T. 310.15(C)(1)

For systems over 1000 volts, the length of a pull box for a straight pull must be NOT less than __________ entering the box. ( a ) 18 times the diameter of the largest raceway ( b ) 36 times the diameter of the largest raceway ( c ) 36 times the largest conductor in the raceway ( d ) 48 times the outside diameter of the largest shielded conductor or cable

48 times the outside diameter of the largest shielded conductor or cable 314.71(A)

The working space or clearance in front of 120 / 208 volt panel to the front of a 277 / 480 volt panel on the other side of the hallway is __________. ( a ) 24" ( b ) 30" ( c ) 36" ( d ) 48"

48" 110.26(A) Condition 3

A new building will have two service heads, serviced by one service drop. What is the maximum distance apart the Code permits the service heads to be located? ( a ) 36" ( b ) 48" ( c ) 6 feet ( d ) no maximum as long as the conductors will reach

48" 230.54(C) Exception

A housing for a motor controller located in a corrosive environment must have a __________ type enclosure. ( a ) 3S or 4X ( b ) 4X and 3R ( c ) 4X or 6P ( d ) 3R or 3S

4X or 6P T. 110.28

Receptacles located __________ feet above the floor are not counted in the required number of receptacles along the wall. ( a ) 4 ( b ) 6 ( c ) 5 - 1 / 2 ( d ) none of these

5 - 1 / 2' 210.52(40

The minimum radius for a bend of 1" rigid conduit with three #10 TW conductors is __________ inches (one shot bender) ( a ) 6 ( b ) 11 ( c ) 5 - 3 / 4 ( d ) none of these

5 - 3 / 4" Chap. 9, Table 2

Electrodes of steel or iron shall have a diameter of at least __________. ( a ) 1 / 2" ( b ) 3 / 4" ( c ) 1" ( d ) 5 / 8"

5 / 8" 250.52(A)(5)(b)

Using the general method of calculation, what is the minimum demand for a household clothes dryer? ( a ) 4 kW ( b ) 4.5 kW ( c ) 5 kW ( d ) 6 kW

5 kW 220.54

Fastening of unbroken lengths of EMT conduit can be increased to a distance of __________ from the termination point where the structural members do NOT readily permit fastening within 3 feet ( a ) 4 ' ( b ) 5 ' ( c ) 6 ' ( d ) 10 '

5' 358.30(A) ex. 1

Busways shall be supported at intervals NOT to exceed __________ unless otherwise designed and marked ( a ) 3' ( b ) 5' ( c ) 6' ( d ) 8'

5' 368.30

Underground wiring within __________ horizontally from the inside of the pool shall be permitted. ( a ) 5' ( b ) 6' ( c ) 8' ( d ) 10'

5' 680.11(A)

Switching devices shall be located at least __________ horizontally from the inside walls of the pool. ( a ) 18" ( b ) 2' ( c ) 4' ( d ) 5'

5' 680.22(C)

RTRC conduit 2" in size shall be securely fastened within 3' of each box and horizontally a maximum of __________ between supports. ( a ) 5' ( b ) 6' ( c ) 7' ( d ) 10'

5' T. 355.30

392.10(E) In airports where maintenance and supervision conditions ensure that only qualified persons can access , install , or service the cable , airfield lighting cable used in series circuits that are rated up to __________ volts and are powered by constant current regulators shall be permitted to be installed in cable trays . ( a ) 1000 ( b ) 2500 ( c ) 3000 ( d ) 5000

5,000 volts 392.10(E)

In each attached garage and in each detached garage with electric power, at least one receptacle outlet shall be installed in each vehicle bay and NOT more than __________ above the floor. ( a ) 5' ( b ) 5.5' ( c ) 6' ( d ) 6.5'

5.5' 210.52(G)(1)

Unless specified otherwise, live parts of electrical equipment operating at __________ volts or more shall be guarded. ( a ) 32 ( b ) 50 ( c ) 115 ( d ) 150

50 V 110.27(A)

A fixture that weighs more than __________ pounds shall be supported independently of the outlet box. ( a ) 15 ( b ) 25 ( c ) 35 ( d ) 50

50 lbs. 314.27(A)(2)

Fixtures shall be supported independently of the outlet box where the weight exceeds __________ pounds. ( a ) 60 ( b ) 50 ( c ) 40 ( d ) 30

50 pounds 314.27(A)(2)

Every circuit breaker having an interrupting rating other than __________ amperes, shall have its interrupting rating shown on the circuit breaker. ( a ) 1000 ( b ) 2000 ( c ) 5000 ( d ) 7500

5000A 240.83(C)

The receptacle used for the EVPE outlet shall be rated 250 volts maximum, single phase, __________ amperes maximum. ( a ) 30 ( b ) 45 ( c ) 50 ( d ) 60

50A 625.60(B)

What is the ampacity of a #8 XHHW copper conductor in a wet location? ( a ) 55 amps ( b ) 50 amps ( c ) 45 amps ( d ) 40 amps

50A T. 310.4(A) • T. 310.16

Flexible cords to portable electrically heated appliances rated at more than __________ watts shall be approved for heating cords. ( a ) 50 ( b ) 100 ( c ) 300 ( d ) 500

50W 422.43(A)

The feeder conductor ampacity shall not be less than that of the service -entrance conductors where the feeder conductors carry the total load supplied by service - entrance conductors with an ampacity of __________ or less. ( a ) 55 amps ( b ) 60 amps ( c ) 100 amps ( d ) 150 amps

55 amps 215.2(A)(3)

The minimum spacing allowed between bare metal current - carrying parts to ground in a panelboard with voltage NOT exceeding 250 volts is __________. ( a ) 8" ( b ) 7 - 1 / 2" ( c ) 7" ( d ) 6 - 1 / 2"

6 - 1 / 2" T. 312.6(B)

Where feeder conductors originate in the same panelboard, and each feeder terminates in a single disconnecting means, NOT more than __________ feeders shall be permitted. ( a ) 2 ( b ) 3 ( c ) 4 ( d ) 6

6 feeders 225.30(B)

The largest rigid metallic conduit permitted to be used is a __________ trade size. ( a ) 4 ( b ) 6 ( c ) 8 ( d ) 12

6 trade size 344.20(B)

Equipment such as raceways, cables, wireways, cabinets, panels, etc. can be located above or below other electrical equipment when the associated equipment does not extend more than __________ from the front of the electrical equipment. ( a ) 3" ( b ) 4" ( c ) 6" ( d ) 12"

6" 110.26(A)(3)

Time switches, flashers, and similar devices where mounted so they are accessible only to qualified persons and so located in an enclosure that any energized parts within __________ of the manual adjustment or switch are covered by suitable barriers. ( a ) 4" ( b ) 6" ( c ) 12" ( d ) 18"

6" 404.5 Ex.

An office building has a 24 - volt branch circuit installed for landscape lighting around the front of the building. The circuit was installed in UF cable which requires a minimum burial depth of __________ inches for this circuit. ( a ) 6 ( b ) 8 ( c ) 12 ( d ) 24

6" T. 300.5

Appliance outlets installed for a specific appliance shall be installed within __________ of the intended location of the appliance. ( a ) 3' ( b ) 4' ( c ) 6' ( d ) 12'

6' 210.50(C)

Receptacle outlets installed for a specific appliance in a dwelling unit, such as a clothes washer, dryer, range, or refrigerator, must be within _________ of the intended location of the appliance. ( a ) sight ( b ) no specified distance ( c ) 6' ( d ) 10'

6' 210.50(C)

Each electrode of one grounding system shall NOT be less than __________ feet from any other electrode of another grounding system. ( a ) 3 ( b ) 6 ( c ) 8 ( d ) 12

6' 250.53(B)

Except where fire stops are required, it shall be permissible to extend cable bus is totally enclosed at the point where it passes through the floor or platform and for a distance of __________ feet above the floor or platform. ( a ) 6 ( b ) 8 ( c ) 10 ( d ) 4

6' 370.18(B)

Tap conductors in a metal raceway for recessed fixture connections shall be limited to __________ feet in length. ( a ) 2 ( b ) 4 ( c ) 6 ( d ) 10

6' 410.117(C)

Separation of junction box from motor shall be permitted to be separated from the motor not more than __________ . ( a ) 6 feet ( b ) 4 feet ( c ) 1.83 ( d ) none of these

6' 430.245(B)

No receptacle shall be installed within __________ feet of the inside walls of a pool. ( a ) 6 ( b ) 15 ( c ) 18 ( d ) 20

6' 680.22(A)(2)

Receptacles that provide power for water - pump motors or for other loads directly related to the circulation and sanitation system must be located at least __________ from the inside walls of the pool. ( a ) 4' ( b ) 6' ( c ) 10' ( d ) 12'

6' 680.22(A)(2)

If practicable, the minimum distance allowed between overhead communication cables and lightning conductors is __________. ( a ) 3' ( b ) 6' ( c ) 10' ( d ) 12'

6' 800.53

The minimum headroom of working spaces about control centers shall be __________. ( a ) 3' - 6" ( b ) 5" ( c ) 6' - 4" ( d ) 6' - 6"

6' - 6" 110.26(A)(3)

The height of a circuit breaker used as a switch shall NOT exceed __________ above the floor. ( a ) 4' ( b ) 4' - 1 / 2' ( c ) 5' ( d ) 6' - 7"

6' - 7" 404.8(A)

Cables shall be permitted to be applied where the system is provided with relay protection such that ground faults will be cleared as rapidly as possible but, in no case, within __________. ( a ) 60 seconds ( b ) one - half minute ( c ) 40 seconds ( d ) two minutes

60 seconds 311.10(C)(1)

Other equipment with ratings exceeding the low - voltage limit contact shall be located at least ___________ horizontally from the inside walls of a pool unless separated from the pool by a solid fence, wall or other permanent barrier. ( a ) 60" ( b ) 4' ( c ) 72" ( d ) 6'

60" 680.23(E)

What is the MINIMUM voltage rating for the insulation on a grounded conductor in a solidly grounded neutral system of over 1 kV? ( a ) 240 volts ( b ) 480 volts ( c ) 600 volts ( d ) 1000 volts

600V 200.2(A)

The minimum insulation level for neutral conductors in solidly grounded systems is __________ volts. ( a ) 250 ( b ) 600 ( c ) 1000 ( d ) 1200

600V 250.184(A)(1)

The maximum allowable voltage permitted for Class I remote - control and signaling circuits is __________ volts. ( a ) 12 ( b ) 24 ( c ) 300 ( d ) 600

600V 725.41(B)

A Non - power limited fire alarm (NFPLA) circuits shall NOT be more than __________ volts. ( a ) 12 ( b ) 24 ( c ) 115 ( d ) 600

600V 760.41(A)

Conductors must have their ampacity determined using the __________ ° C column of Table 310.16 for circuits rated 100 amps or less or marked #14 through #1 conductors, unless the equipment terminals are listed for use with higher temperature rated conductors. ( a ) 60 ( b ) 75 ( c ) 90 ( d ) 110

60° C 110.14(C)(1)(a)(1)

The ampacity of type UF cable shall be that of __________ conductors. ( a ) 60°F ( b ) 75°C ( c ) 140°C ( d ) 60°C

60°C 340.80

For raceways or cables exposed to direct sunlight on or above rooftops to the bottom of the raceway or cable is less than 7 / 8", a temperature adder of __________ shall be added to the outdoor temperature to determine the applicable ambient temperature for application of correction factors. ( a ) 30°F ( b ) 60°C ( c ) 30°C ( d ) 60°F

60°F 310.15(B)(2)

What is the VA input of a fully loaded 5 HP, 230 volt, single - phase conductor? ( a ) 746 ( b ) 3730 ( c ) 6440 ( d ) 12,880

6440 VA T. 430.248 F.L.C. VA = E x I

Using the optional method of calculation for a single - dwelling unit, the central space heating would be calculated at __________ percent. ( a ) 40 ( b ) 50 ( c ) 65 ( d ) 100

65% 220.82(C)(3)

The circular mil area of a #12 conductor is __________ cm. ( a ) 10380 ( b ) 26240 ( c ) 6530 ( d ) 6350

6530 cm Table 8

Heavy - duty lamp holders shall have a rating NOT less than __________ watts of the medium type, and NOT less than __________ watts of any other type. ( a ) 750 . . . 750 ( b ) 1000 . . . 750 ( c ) 660 . . . 750 ( d ) 660 . . . 1000

660 . . . 750 210.21(A)

When installing a new totally enclosed light fixture over an indoor swimming pool with ground fault protection, the minimum height shall be __________ above the maximum water level. ( a ) 12' ( b ) 10' ( c ) 7 - 1 / 2' ( d ) 6'

7 -1 / 2' 680.22(B)(2)

A wall, screen, or fence must be __________ tall that encloses an outdoor electrical installation over 1000 volts to deter access by unqualified persons. ( a ) 5' ( b ) 6' ( c ) 7' ( d ) 8'

7' 110.31

Heating cables shall be furnished with non - heating leads at least __________in length. ( a ) 7' ( b ) 8' ( c ) 10' ( d ) 12'

7' 424.34

For a feeder supplying household cooking equipment and electric clothes dryers, the maximum unbalanced load on the neutral conductor shall be considered as __________ of the load on the ungrounded conductors. ( a ) 40% ( b ) 50% ( c ) 70% ( d ) 80%

70% 220.61(B)

In a recreational vehicle park with electrical supply, at least __________ % of the sites shall be equipped with 30 ampere, 125 volt receptacles. ( a ) 5 ( b ) 20 ( c ) 70 ( d ) 100

70% 551.71(B)

The current carried continuously in bare aluminum bars in auxiliary gutters shall not exceed __________ amperes per square inch. ( a ) 560 ( b ) 700 ( c ) 800 ( d ) 1000

700 A 366.23(A)

In a dwelling, it shall be permissible to apply a demand factor of __________ percent to the nameplate rating load of four or more appliances fastened in place. ( a ) 60% ( b ) 70% ( c ) 75% ( d ) 80%

75% 220.53

Splices or taps shall be permitted within gutters when they are accessible. The conductors, including splices and taps, shall NOT fill the gutter more than __________ of its area. ( a ) 20% ( b ) 40% ( c ) 75% ( d ) 80%

75% 366.56(A)

Metal surface raceways having splices and taps shall be permitted as long as the splices and taps and conductors do NOT fill the raceway more than __________ percent of the area of the raceway at that point. ( a ) 40 ( b ) 50 ( c ) 70 ( d ) 75

75% 386.56

For household ranged rated __________ or more rating, the minimum branch circuit rating shall be 40 amperes. ( a ) 4 kW ( b ) 6 kW ( c ) 8 kW ( d ) 8 - 3 / 4 kW

8 - 3 / 4 kW 210.19(A)(3)

A panelboard contains six 3 - pole circuit breakers and eight 2 - pole circuit breakers. The maximum allowable number of single - pole breakers permitted to be added in this panelboard is __________ . ( a ) 8 ( b ) 16 ( c ) 28 ( d ) 42

8 breakers 408.36 Exemption No. 1

Each patient bed location shall be provided with a minimum of __________ receptacles. ( a ) 6 ( b ) 8 ( c ) 12 ( d ) 16

8 receptacles 517.18(B)(1)

When the voltage to a building is 480 / 277, and the service drop runs NOT more than four feet past the edge of the overhang of the roof, how high must it be above the roof? ( a ) 18" ( b ) 3' ( c ) 4' ( d ) 8'

8' 230.24(A)

The grounding electrode shall be installed such that __________ of length is in contact with the soil. ( a ) 6' ( b ) 7' ( c ) 7' - 6" ( d ) 8'

8' 250.53(A)(4)

Underground service conductors carried up a pole must be protected from mechanical injury to a height of at least __________ feet. ( a ) 12 ( b ) 8 ( c ) 15 ( d ) 9

8' 300.5(D)(1)

No parts of cord-connected luminaires, chain-, cable-, or cord-suspended luminaires, lighting track, pendants, or (paddle) fans shall be located within a zone measured 3' horizontally and __________ ' vertically from the top of the bathtub rim or shower stall threshold.

8' 410.10(D)(1)

Luminaires located within the actual outside dimension of a bathtub or shower to a height vertically of __________ from the tope of the bathtub rim or shower threshold shall be marked suitable for damp locations or marked suitable for wet locations. ( a ) 6' ( b ) 8' ( c ) 10' ( d ) 12'

8' 410.10(D)(2)

Portable appliances used on 15 or 20 amp branch circuit, the rating of any one portable appliance shall NOT exceed __________ percent of the branch circuit rating. ( a ) 60 ( b ) 100 ( c ) 80 ( d ) 50

80% 210.23(A)(1)

T. 310.15(B)(1) The ampacity for conductors is de - rated when the ambient temperature exceeds: ( a ) 30° F ( b ) 72° F ( c ) 86° F ( d ) 104° F

86° F T. 310.15(B)(1)

At least one receptacle outlet shall be provided for the first __________ sq. ft. or fraction thereof, of the countertop or work surface. ( a ) 6 ( b ) 9 ( c ) 10 ( d ) 12

9 sq. ft. 210.52(C)(2)

What is the MAXIMUM rung spacing for ladder cable trays carrying single conductor #4 / 0 AWG cable? ( a ) 4" ( b ) 6" ( c ) 9" ( d ) 12"

9" 392.10(B)(1)(a)

Unguarded live parts above working space shall be maintained at an elevation of __________ for 4160 volts. ( a ) 8' ( b ) 8' - 6" ( c ) 9' ( d ) 10'

9' T. 110.34(E)

Unguarded live parts operating at 30,000 volts located above a working space must be elevated at least __________ above the working space. ( a ) 9.6" ( b ) 12.5' ( c ) 24' ( d ) 30'

9.6" 110.34(E) & T. 110.34(E)

Luminaires shall be so constructed, or installed, or equipped with shades or guards that combustible material will not be subjected to temperatures in excess of __________. ( a ) 90° F ( b ) 86° F ( c ) 30° C ( d ) 90° C

90° C 410.11

Type THW insulation has a __________ degree Celsius rating for use in wiring through fixtures. ( a ) 60 ( b ) 75 ( c ) 85 ( d ) 90

90° C T. 3104(A)

Recessed fixtures shall be so constructed that adjacent combustible material will NOT be subject to temperatures in excess of __________ degrees Celsius. ( a ) 60 ( b ) 75 ( c ) 90 ( d ) 110

90°C 410.115(A)

Branch circuit conductors within 3 inches of a ballast within the ballast compartment shall have an insulation temperature rating not lower than __________. ( a ) 60°C ( b ) 75°C ( c ) 85°C ( d ) 90°C

90°C 410.68

Which of the following is NOT true? ( a ) A demand factor from Table 220.55 could be applied to a household counter - mounted cooking unit of 1760 watts. ( b ) Ten household clothes dryers have a demand factor of 50% ( c ) A demand factor from Table 220.55 could be applied to a 1 - 3 /4 kW wall - mounted oven. ( d ) Table 220.55 is permitted for a branch circuit to a household range.

A demand factor from Table 220.55 could be applied to a 1 - 3 / 4 kW wall - mounted oven. T. 220.55

Which of the following is NOT true? ( a ) The receptacle outlet spacing in a motel room can be more than 12' from outlet to outlet ( b ) A two - family dwelling requires at least one receptacle outlet outdoors for each dwelling unit at grade level ( c ) A vehicle door in an attached garage is NOT considered as an outdoor entrance ( d ) A vehicle door in an attached garage is considered as an outdoor entrance

A vehicle door in an attached garage is considered as an outdoor entrance 210.70(A)(2)(2)

Which of the following may NOT be used in damp or wet locations? ( a ) AC armored cable ( b ) EMT ( c ) open wiring ( d ) rigid steel conduit

AC armored cable 320.12(2)

_________ must not be allowed to come in contact with interior parts of electrical equipment. ( a ) Insulators ( b ) Busbars ( c ) Terminals ( d ) Abrasives

Abrasives 110.12(B)

You are installing two disconnecting means for motor operation: One for disconnecting the motor and motor controller from the circuit, and one for disconnecting a separate motor control circuit from the power supply. Where does the Code require the control circuit disconnect be located? ( a ) Next to the motor ( s ) ( b ) Adjacent to one another ( c ) Outside for easy access ( d ) "In Sight From" each other

Adjacent to one another 430.75(A)

When the following condition(s) are met __________, a room air conditioner is considered to be a single motor unit in determining its branch circuit requirement. ( a ) it is cord - and - plug connected and its rating is not more than 40 amps and 250 volts, 1 ( b ) total rated - load current is shown on the room air - conditioner nameplate rather than individual motor currents ( c ) the rating of the branch - circuit short - circuit and ground - fault protective device does not exceed the ampacity of the branch - circuit conductors or the rating of the receptacle, whichever is less ( d ) All of the above

All of the above 440.62(A)

Which of the following receptacle outlets in a mobile home requires GFCI protection? ( a ) An outdoor receptacle ( b ) A dishwasher receptacle ( c ) A receptacle within 6' of a lavatory ( d ) All of these

All of these 210.8(D) • 550.13(B) Exception

Appliances, such as, __________ provided for public use rated 250v or less and 60 amps or less , 1ø or 3ø , shall be provided with GFCI protection for personnel . ( a ) vending machines ( b ) tire inflation machines ( c ) drinking water coolers ( d ) all of these

All of these 422.5(A)(2) • 422.5(A)(4) • 422.5(A)(5)

Which of the following is an approved method for protecting the leads for heating cables as they leave a concrete surface? ( a ) Rigid metal conduit ( b ) Rigid non - metallic conduit ( c ) Intermediate metal conduit ( d ) All of these

All of these 424.98(D)

Which of the following is required for temporary wiring? ( a ) Flexible cords shall be protected from accidental damage. ( b ) All branch circuits shall originate in an approved panelboard. ( c ) All conductors shall be protected as provided in Article 240 ( d ) All of these

All of these 590.4(C), 590.4(H)

Outdoor electrical installations over 1000 volts that are open to unqualified persons shall comply with __________ . ( a ) Chapter 9 ( b ) Article 225 ( c ) Chapter 7 ( d ) Article 110

Article 225 110.31(C)(1)

Which of the following shall be installed at or near equipment requiring servicing such as attics and underfloor spaces, utility rooms and basements? ( a ) Lighting fixture with pull - chain switch ( b ) Three receptacles with GFCI protection ( c ) At least one switch - controlled lighting outlet ( d ) Low - voltage transformer to service control components

At least one switch - controlled lighting outlet 210.70(C)

What special provision is required for all hospital bed locations? ( a ) At least two branch circuits ( b ) Tamper - resistant receptacles ( c ) Explosion - proof receptacles ( d ) A patient equipment - grounding point

At least two branch circuits 517.18(A)

Which of the following shall be provided where necessary to assure electrical continuity? ( a ) Grounding ( b ) Bonding ( c ) Jumpers ( d ) Shunts

Bonding 250.90

__________ in dwelling units must supply loads within that dwelling unit or loads associated only with that dwelling unit. ( a ) Branch circuits ( b ) Feeders ( c ) The service ( d ) The GFCI

Branch circuits 210.25(A)

Which of the following is NOT true regarding rigid nonmetallic conduit? ( a ) Extreme cold may cause some nonmetallic conduits to become brittle and therefore more susceptible to damage ( b ) Can be used to support luminaires ( c ) All cut ends shall be trimmed inside and outside to remove rough edges ( d ) Expansion joints shall be provided to compensate for thermal expansion and contraction.

Can be used to support luminaires 352.12(B)

What is the classification of a location where ignitable concentrations of flammable gas are likely to be present during normal operations? ( a ) Class I, Division I ( b ) Class I, Division 2 ( c ) Class II, Division 1 ( d ) Class II, Division 2

Class I, Division I 500.5(B)(1)

A Universal Serial Bus flush device cover plate that additionally provides a night light and / or ___________ output connector(s ) shall be listed. ( a ) one ( b ) two ( c ) Class I ( d ) Class II

Class II 406.6(D)

Switches, circuit breakers, relays, contactors, fuses and current - breaking contacts for bells. horns, sirens, and other devices in which sparks or arcs may be produced shall be provided with enclosures identified for __________ location. ( a ) Class I ( b ) Class II ( c ) Class III ( d ) Class IV

Class II 502.115(B)

Locations in which easily ignitable combustible fibers are stored or handled other than in the process of manufacturing are designated as __________ . ( a ) nonhazardous ( b ) Class III , Division 2 ( c ) Class III , Division 1 ( d ) Class II , Division 2

Class III , Division 2 500.5(D)(2)

__________ is defined as properly localizing a fault condition to restrict outages to the equipment affected, accomplished by choice of the selective and installation fault protective devices. ( a ) Monitoring ( b ) Coordination ( c ) Choice selection ( d ) Fault device

Coordination DEF 100

_________ is defined as the shortest distance measured between a point on the top surface of any direct buried conductor, cable, conduit, or other raceway and the top surface of finished grade. ( a ) Depth ( b ) Cover ( c ) Gap ( d ) Soil

Cover T. 300.5 Note 1

Coatings on which of the following shall be removed at threads, contact points, and contact surfaces or be connected by means of fittings so designed as to make such removal unnecessary in bonding other enclosures for grounding? ( a ) Zinc ( b ) Enamel ( c ) Copper ( d ) Aluminum

Enamel 250.96(A)

The following must be provided in locations where electrical equipment would be exposed to physical damage: ( a ) Working space ( b ) Warning signs ( c ) Enclosures or guards ( d ) Sufficient headroom

Enclosures or guards 110.27(B)

Type __________ cable consists of three or more flat copper conductors placed edge - to - edge and separated and enclosed within an insulation assembly. ( a ) NMC ( b ) AC ( c ) MI ( d ) FCC

FCC 324.2 DEF

All electric equipment, including power supply cords used with storable pools shall be protected by __________. ( a ) GFCI ( b ) fuses ( c ) circuit breakers ( d ) current - limiting fuses

GFCI 680.32

What color must be used to identify an insulated #6 or smaller grounded conductor? ( a ) Red ( b ) Blue ( c ) Green ( d ) Gray

Gray 200.6(A)(2)

Which of the following colors indicates an equipment grounding conductor in flexible cord? ( a ) White ( b ) White with blue stripe ( c ) Green with a yellow stripe ( d ) Green with gray stripe

Green with yellow stripe 250.119(C)

___________ switches shall be used for capacitor switching. ( a ) Isolation ( b ) Group - operated ( c ) Shunt ( d ) High - voltage

Group - operated 460.24(A)

Type AC cable shall be permitted for branch circuits and feeders in __________. I. concealed work II. exposed work III. hazardous locations ( a ) I, II, and III ( b ) II and III only ( c ) I and III only ( d ) I and II only

I and II only 320.10(1)

Type SE service - entrance cable shall be permitted in interior wiring systems where all of the circuit conductors of the cable are of the __________ type. I. thermoset II. thermoplastic III. metal ( a ) I and II only ( b ) II only ( c ) II and III only ( d ) I, II, and III

I and II only 338.10(B)(1)

Luminaires in clothes closets shall be __________ . I. a surface - mounted or recessed incandescent or LED luminaires with luminaires completely enclosed light sources II. a surface - mounted or recessed fluorescent luminaire III. pendant fixture ( a ) I only ( b ) I and II only ( c ) I and III only ( d ) I, II and III

I and II only 410.16(A)(1) & (A)(2)

Examples of resistance heaters are ___________ . I. heating blankets II. heating tape III. heating barrel ( a ) I and II only ( b ) II and III only ( c ) III only ( d ) II only

I and II only 427.21 Informational Note

RV feeders from 208Y / 120 volt , 3ø systems shall be permitted to include ___________ . I. one equipment grounding conductor II. one grounded conductor III. three grounded conductors ( a ) I only ( b ) II only ( c ) I and II only ( d ) I, II, and III

I and II only 551.72(B)

The __________, or other descriptive marking by which the organization responsible for the product may be identified, shall be placed on all electric equipment. I. trademark II. cost III. manufacturer's name ( a ) I only ( b ) I and II only ( c ) I and III only ( d ) I, II, and III

I and III only 110.21

Temporary electrical power and lighting installations shall be permitted __________. I. for development work II. for permanent wiring III. during emergencies and for tests ( a ) I only ( b ) II only ( c ) I and II only ( d ) I and III only

I and III only 590.3(C)

Where a transformer or other device is used to obtain a reduced voltage for the motor control circuit and is located in the controller, such transformer or other device shall be connected __________ for the motor control circuit. I. to the load side of the disconnecting means II. to the line side of the disconnecting means ( a ) I only ( b ) II only ( c ) either I and II ( d ) neither I or II

I only 430.75(B)

Conductors for festoon lighting shall be of the __________ type. I. thermoplastic II. thermoset III. shielded ( a ) I only ( b ) I or II only ( c ) II or III only ( d ) I, II, or III

I or II only 225.4

Electrical continuity at service equipment shall be assured by __________. I. thread - less couplings and connectors made up tight for rigid metal conduit, IMC and EMT II. threaded couplings and threaded bosses on enclosures with joints shall be made up wrench - tight III. standard locknuts or bushings ( a ) I or III only ( b ) II or III only ( c ) I or II only ( d ) I, II, or III

I or II only 250.92(B)(2)(3)

Grounding electrode conductors smaller than #6 shall be in __________. I. EMT II. IMC III. rigid PVC IV. rigid metal conduit ( a ) I and IV only ( b ) I, II, and IV only ( c ) II and IV only ( d ) I, II, III, and IV

I, II, III, and IV 250.64(B)(2)

The principal determinants of operating temperatures are __________. I. heat generated internally in the conductor as the result of load current flow. II. the rate at which generated heat dissipates into the ambient medium III. adjacent load - carrying conductors. IV. ambient temperature ( a ) II and IV only ( b ) I and IV only ( c ) I, II, and IV ( d ) I, II, III, and IV

I, II, III, and IV 310.14(A)(3) I.N.

Enclosures supported by suspended ceiling systems shall be fastened to the framing member by mechanical means such as __________. I. clips identified for use II. screws III. rivets IV. bolts ( a ) I only ( b ) II only ( c ) II and IV only ( d ) I, II, III, and IV

I, II, III, and IV 314.23(D)(1)

Induction heating coils that operate or may operate at a voltage greater than 30 volts AC shall be __________ to protect personnel in the area. I. isolated II. made inaccessible by location III. enclosed in a non - metallic enclosure IV. enclosed in a split metallic enclosure ( a ) I or III only ( b ) I, II, or III only ( c ) I, II, or IV only ( d ) I, II, III, or IV

I, II, III, or IV 427.36

Branch circuits in dwelling units shall supply only loads within that dwelling unit or loads associated only with that dwelling unit. Branch circuits required for the purpose of lighting, __________, or other needs for public or common areas shall NOT be supplied from a dwelling unit panelboard. I. communications II. signal III. central alarm ( a ) I only ( b ) II only ( c ) III only ( d ) I, II, and III

I, II, and III 210.25(B)

Where the service overcurrent devices are locked or sealed, or otherwise NOT readily accessible, branch - circuit overcurrent devices shall be __________. I. of lower ampere rating than the service overcurrent device II. mounted in a readily accessible location III. installed on the load side ( a ) I only ( b ) II only ( c ) III only ( d ) I, II, and III

I, II, and III 230.92

Which of the following about the equipment grounding conductor is / are true? I. does NOT count as a current - carrying conductors II. bare, covered, or insulated shall be permitted III. count one for each grounding conductor in conduit fill ( a ) I only ( b ) II and III only ( c ) I and III only ( d ) I, II, and III

I, II, and III 250.118 • 310.15(F) • Chap. 9 Note #3

The frame of a clothes dryer shall be permitted to be grounded to the grounded circuit conductor if __________. I. the grounded conductor is insulated II. the grounded conductor is NOT smaller than #10 copper III. the supply circuit is 120 / 240v single - phase ( a ) I only ( b ) II only ( c ) III only ( d ) I, II, and III

I, II, and III 250.140 Exception (1, 2, 3)

Grounding conductors and bonding jumpers shall be connected by __________ or other listed means. I. listed clamps II. listed pressure connectors III. exothermic welding ( a ) I only ( b ) II only ( c ) III only ( d ) I, II, and III

I, II, and III 250.70

Type FCC cable shall be clearly and durably marked with _________. I. material of conductors II. maximum temperature rating III. ampacity ( a ) I only ( b ) II only ( c ) III only ( d ) I, II, and III

I, II, and III 324.120

All type FCC cable connections shall use connectors identified for their use, installed such that __________ against dampness and liquid spillage are provided. I. electrical continuity II. insulation III. sealing ( a ) I only ( b ) II only ( c ) III only ( d ) I, II, and III

I, II, and III 324.40(A)

__________ of insulating material that are Listed shall be permitted to be used without boxes in exposed cable wiring. I. Self - contained switches II. Self - contained receptacles III. NM cable interconnector devices ( a ) I only ( b ) II only ( c ) III only ( d ) I, II, and III

I, II, and III 334.40(B)

Cable trays shall __________. I. have side rails or equivalent structural members II. NOT present sharp edges or burrs III. have suitable strength and rigidity ( a ) I only ( b ) I and II only ( c ) III only ( d ) I, II, and III

I, II, and III 392.100(A, B, D)

All switchboards and panelboards supplied by a feeder in other than one - or - two family dwellings shall be marked to indicate the __________ where as the power supply originates. I. device II. equipment III. device or equipment ( a ) I only ( b ) II only ( c ) III only ( d ) I, II, and III

I, II, and III 408.4(B)

Fixture studs that are NOT part of outlet boxes __________ shall be made of steel, malleable iron, or other material suitable for the application. I. crowfeet II. hickeys III. tripods ( a ) I only ( b ) II only ( c ) III only ( d ) I, II, and III

I, II, and III 410.36(C)

An autotransformer starter shall provide __________ . I. an "off" position II. a running position III. at least one starting position ( a ) I only ( b ) II only ( c ) I and II ( d ) I, II, and III

I, II, and III 430.82(B)

The following pool equipment shall be grounded __________ . I. ground - fault circuit - interrupters II. transformer enclosures III. electric equipment located within 5 feet of the inside wall of the pool. ( a ) III only ( b ) II and III only ( c ) II only ( d ) I, II, and III

I, II, and III 680.6(2)(5)(6)

Receptacles connected to circuits having different __________ on the same premises shall be of such design that the attachment plugs used on these circuits are NOT interchangeable. I. current ( AC or DC) II. frequencies III. voltages IV. wattages ( a ) I and III only ( b ) I and II only ( c ) I, II, and III only ( d ) I, II, III, and IV

I, II, and III only 406.4(F)

A single electrode consisting of a __________ which does not have a resistance to ground of 25Ω or less shall be augmented by one additional electrode I. rod II. pipe III. plate ( a ) I only ( b ) II only ( c ) III only ( d ) I, II, or III

I, II, or III 250.53(A)(2)(1)

The Code requires in a dwelling a minimum of __________. I. 3 volt - amps per square foot II. one 8 kW range III. two small appliance circuits IV. one laundry circuit ( a ) I and II only ( b ) I, II, and III only ( c ) I, III, and IV only ( d ) I, II, III, and IV

I, III, and IV only 210.11(C)(1) & (C)(2) • T. 220.12(A)

Conductors shall be considered outside a building __________. I. when installed in a raceway II. where installed within a building in a raceway enclosed by 2" of brick III. where installed under NOT less than 2" of concrete beneath a building ( a ) II only ( b ) III only ( c ) II and III ( d ) I, II, and III

II and III 230.6(1 & 2)

Concealed knob - and - tube wiring shall be permitted to be used only for extensions of existing installations and elsewhere only by permission under the following conditions __________. I. in unfurnished attic and roof spaces when such spaces are insulated by loose or rolled insulating material II. in the hollow spaces of walls and ceilings III. in unfinished attic and roof spaces as provided in section 394.23 ( a ) I only ( b ) I and III only ( c ) II and III only ( d ) I, II, and III

II and III only 394.10

The grounded conductor, when insulated, shall have insulation __________. I. rated NOT less than 300 volts for solidly grounded neutral systems of 1 kv over as described in section 250.184 II. which is suitable, other than color, for any ungrounded conductor of the same circuit on circuits of less than 1000 volts ( a ) I only ( b ) II only ( c ) either I or II ( d ) neither I or II

II only 200.2

Handles or levers of circuit breakers, and similar parts which may move suddenly in such a way that persons in the vicinity are likely to be injured by being struck by them, shall be __________ . I. concealed II. isolated III. guarded ( a ) I or II only ( b ) II or III only ( c ) I or III only ( d ) I, II, and III

II or III only 240.41(B)

A garbage disposal in the kitchen of a residence provided with a type SO three - conductor cord terminated with a grounding - type attachment plug shall be permitted where all of the following conditions are met __________. I. the receptacle shall be readily accessible II. the receptacle shall be located to avoid physical damage to the flexible cord III. the receptacle shall be accessible IV. the length of the cord shall NOT be less than 18" and NOT over 36" ( a ) I, II, and IV ( b ) I, II, and III ( c ) II, III, and IV ( d ) III and IV

II, III, and IV 422.16(B)(1), (B)(2), (B)(3), & (B)(4)

The grounding conductor for secondary circuits of instrument transformers and for instrument cases shall NOT be smaller than #12 __________ . I. metal II. aluminum III. copper ( a ) I only ( b ) II only ( c ) III only ( d ) I, II or III

III only 250.178

Conductive materials enclosing electrical conductors are grounded to __________. I. prevent surges of voltage II. prevent surges of lightning III. to facilitate overcurrent device operation in case of ground faults ( a ) I only ( b ) II only ( c ) III only ( d ) all of these

III only 250.4(B)(5)

Electric vehicle cable type EVJ __________. I. comes in sizes #18 - #500 kcmil II. is for extra hard usage III. has thermoset insulation ( a ) I only ( b ) II only ( c ) III only ( d ) I, II, and III

III only T. 400.4

Which of the following areas are branch - circuit overcurrent devices NOT permitted? ( a ) In residential unfinished basements ( b ) In motel utility rooms ( c ) In shops containing motor - driven tools ( d ) In residential or motel bathrooms

In residential or motel bathrooms 240.24(E)

Which of the following are NOT considered electric vehicles? ( a ) Industrial trucks ( b ) Vans ( c ) Buses ( d ) Trucks

Industrial trucks DEF 100

__________ is a qualifying term indicating that there is a purposely - introduced delay in the tripping action of the circuit breaker, which decreases as the magnitude of the current increases. ( a ) Time delay ( b ) Controller ( c ) Inverse - time ( d ) Adverse - time

Inverse - time DEF 100

Ground - fault circuit - interrupters shall be installed in the branch circuit supplying underwater pool lighting fixtures operating at more than __________ volts. ( a ) 12 ( b ) L.V. contact limit ( c ) 24 ( d ) 50

L.V. contact limit 680.23(A)(3)

When combination of conductors enter a box, which conductor size shall be used when utilizing the volume deductions permitted for fittings and devices? ( a ) Total ( b ) Smallest ( c ) Largest ( d ) Average

Largest 314.16(B)(3, 4)

332.40(B) Which of the following requires a moisture seal at all points of termination? ( a ) under - plaster extensions ( b ) bare conductor feeders ( c ) LFMC - liquid - tight flexible metal conduit ( d ) MI (mineral - insulated) Cable

MI (mineral - insulated) Cable 332.40(B)

For general motor application, the motor branch circuit fuse size must be determined from __________ . ( a ) motor nameplate current ( b ) NEMA standards ( c ) NEC Tables ( d ) Factory Mutual

NEC Tables 430.6(A)(1), 430.52(C)(1)

Formal interpretations of the Code may be found in the __________ . ( a ) National Electric Code Handbook ( b ) OSHA Standards ( c ) NFPA Regulations Governing Committee Projects ( d ) Life and Safety Handbook

NFPA Regulations Governing Committee Projects 90.6

__________ cable shall be flame - retardant, moisture - resistant, fungus - resistant, and corrosion - resistant. ( a ) MI ( b ) USE ( c ) NMC ( d ) NM

NMC 334.116(B)

Supplementary overcurrent devices shall __________. ( a ) not be allowed under any condition ( b ) not be required to be readily accessible ( c ) be required to be readily accessible and within sight of equipment ( d ) be connected only in parallel or series - parallel

NOT be required to be readily accessible 240.10

Branch circuits in multifamily dwellings for the purpose of alarm, signal, communications, central lighting, or other needs for public or commercial areas shall __________. ( a ) be rated over 60 amps ( b ) NOT be supplied from a dwelling's unit's panelboard ( c ) terminate in one of the dwelling unit's panelboards ( d ) be rated over 30 amperes for any application or purpose

NOT be supplied from a dwelling's unit's panelboard 210.25(B)

A feeder must have a protective device with a rating or setting __________ branch - circuit short - circuit and ground - fault protective device for any motor in the group. ( a ) 125% of the largest rating of the ( b ) NOT greater than the largest rating or setting ( c ) 225% of the largest rating ( d ) none of these

NOT greater than the largest rating or setting 430.62(A)

What is the required minimum headroom for electrical equipment that exceeds 6 1 /2 feet in height? ( a ) 6" higher than height of the equipment ( b ) 12" higher than the height of the equipment ( c ) 3 feet higher than the height of the equipment ( d ) NOT less than the height of the equipment

NOT less than the height of the equipment 110.26(A)(3)

The maximum overcurrent device rating for each resistance welder connected to an electrical system is __________. ( a ) NOT over 350% of the rated the primary current of the welder ( b ) NOT over 300% of the rated primary current of the welder ( c ) NOT over 150% of the rated primary current of the welder ( d ) NOT over 100% of the rated primary current of the welder

NOT over 300% of the rated primary current of the welder 630.32(A)

Which of the following is NOT permitted to identify a #6 or smaller grounded conductor? ( a ) Gray outer finish ( b ) Natural gray outer finish ( c ) White outer finish ( d ) Three white stripes on other than green insulation

Natural gray outer finish 200.6(A)

A dwelling has five 2 - wire branch circuits supplying the total load. The electrician installed a 60 amp service using #6 service entrance conductors. Would this meet Code? ( a ) Yes, this service would handle seven 120 volt circuits. ( b ) No, the Code requires a 100 amp service for a dwelling. ( c ) No, three 120 volt, 15 amp circuits plus two small appliance circuits might all be on at one time exceeding 60 amps. ( d ) Yes, three 15 amp circuits, plus the two - 20 amp small appliance circuits, divided by 2, would only be 42.5 amps. A 60 amp service would be adequate.

No, the Code requires a 100 amp service for a dwelling. 230.79(C)

__________ shall be provided to give safe access to the working space around equipment over 600 volts installed on platforms, balconies, mezzanine floors, or in attic or roof rooms or spaces. ( a ) Openings ( b ) Platforms or ladders ( c ) Ladders ( d ) Permanent ladders or stairways

Permanent ladders or stairways 110.33(B)

The attachment plug on a table lamp outfitted with a line - connected single - pole switch wired with a flat 2 - conductor cord must be replaced. What type of attachment plug must be used? ( a ) Twist lock ( b ) Polarized ( c ) Grounding ( d ) Non - polarized

Polarized 410.82(A)

An electric pump installed in a pond may be supplied by a Type __________ flexible cord. ( a ) TPT or TS ( b ) SRD or SRDT ( c ) SP - 1 or SPE - 1 ( d ) SO or ST

SO or ST T. 400.4 Note 7 • 680.56(B)

Where is the #8 solid copper bonding conductor used with in - ground swimming pools, required to terminate? ( a ) At the service equipment. ( b ) A the grounding electrode. ( c ) At the ground terminal of the remote panelboard. ( d ) Shall NOT be required to be extended or attached to remote panelboards.

Shall NOT be required to be extended or attached to remote panelboards. 680.26(B)

__________ is a system in which heat is generated on the inner surface of a ferromagnetic envelope embedded in or fastened to the surface to be heated. ( a ) Duct heaters ( b ) Electrode - type boilers ( c ) Space heating ( d ) Skin effect heating

Skin effect heating 426.2

Which of the following are recognized types of phase converters? ( a ) Split - phase ( b ) Compound - wound ( c ) Static and rotary ( d ) Shaded - pole

Static and rotary 455.2 DEF

Application of demand factors to small appliance and laundry loads in dwellings are permitted in Table __________ . ( a ) 220.12 ( b ) 220.42 ( c ) 220.71 ( d ) 220.80

T. 220.42 220.42

Two types of conductors allowed within 3 inches of a ballast within the ballast compartment of a fluorescent lighting fixture are __________. ( a ) RH or RHW ( b ) UF or THWN ( c ) THW or THHN ( d ) T or TW

THW or THHN T. 310.4(A) • 410.68

What protective device protects a motor against dangerous overheating and is assembled as an integral part of a motor or motor - compressor? ( a ) Power cutout ( b ) Current - release element ( c ) Thermal protector ( d ) Integral fuse

Thermal protector DEF 100

Which of the following organizations would maintain records of tested electrical equipment ? ( a ) Underwriters ' Laboratories ( b ) National Fire Protection Association ( c ) National Electrical Contractors Association ( d ) IEEE

UL General Knowledge

For general wiring, __________ type cable containing one or more conductors is approved for direct burial in earth. ( a ) THW ( b ) USE ( c ) THHW ( d ) THHN

USE 338.100

Which of the following is NOT an acceptable method of mounting electrical equipment to a masonry wall? ( a ) With screws driven into wooden plugs in the wall. ( b ) With bolts through the wall supported by metal plates on the back side. ( c ) With lag bolts screwed into lead masonry anchors. ( d ) With molly bolts through holes drilled entirely through the wall.

With screws driven into wooden plugs in the wall. 110.13(A)

Means must be provided in the service equipment to disconnect the grounded conductor. Is this true even when the service equipment disconnects the ungrounded conductors? ( a ) No, the grounded conductor is the neutral and it must never be disconnected. ( b ) Yes, the Code has this requirement and it shall be followed. ( c ) No, disconnecting the neutral during normal operations would create a hazard. ( d ) Yes, whenever the ungrounded conductors are disconnected they also open the grounded.

Yes, the Code has this requirement and it shall be followed. 230.75

A panelboard for a residence shall NOT be installed in __________. ( a ) a garage ( b ) a basement ( c ) an uncovered patio ( d ) a clothes closet or bathroom

a clothes closet or bathroom 240.24(D) • 240.24(E)

An insulated conductor larger than #6 shall, at the time of installation, be permitted to be permanently identified as a grounded conductor by ___________. ( a ) stripping the insulation from the entire exposed length ( b ) coloring the exposed insulation green ( c ) a distinctive white marking at its terminations ( d ) none of the above meets the Code

a distinctive white marking at its terminations 200.6(B)(3)

Two - wire DC circuits and AC circuits of two or more ungrounded conductors shall be permitted to be tapped from the ungrounded conductors of circuits having __________ . ( a ) a properly sized conductor ( b ) less than 50 volts ( c ) a balanced neutral system ( d ) a grounded neutral conductor

a grounded neutral conductor 210.10, 215.7

A transverse metal raceway for electrical conductors, furnishing access to predetermined cells of precast cellular concrete floor, which permits installation of conductors from a distribution center to the floor cells is called __________. ( a ) an underfloor raceway ( b ) a header ( c ) a cellular raceway ( d ) a mandrel

a header 374.2 DEF

An inverse time circuit breaker that is used as both controller and disconnecting means is permitted to be operated by __________ attachment to the handle or lever. ( a ) power ( b ) manual ( c ) actuator ( d ) a or b

a or b 430.111(B)(2)

If equipment has been damaged by fire, or products of combustion, or water, it shall be specifically evaluated by its manufacturer or __________ prior to being returned to service. ( a ) an AHJ ( b ) by an electrical engineer ( c ) a qualified testing laboratory ( d ) a qualified maintenance electrician

a qualified testing laboratory 408.8

Where a permanent barrier is installed in a pull box, each section is considered as __________. ( a ) permanent barriers are NOT allowed ( b ) a separate box ( c ) 60% of the box ( d ) the same box

a separate box 314.28(D)

Many terminations and equipment are marked with __________ . ( a ) a removable lable ( b ) a tightening torque ( c ) a stencil ( d ) a logo

a tightening torque 110.14(D)

Splices and taps shall be permitted within a wireway provided they are __________. The conductors, including splices and taps, shall NOT fill the wireway to more than __________ of its area at that point. ( a ) sealed ; 60% ( b ) soldered : 50% ( c ) accessible ; 75% ( d ) copper conductors only ; 80%

accessible ; 75% 376.56(A)

Supply bonding jumpers must be sized __________ . ( a ) according to the fuse size ( b ) same as the largest service conductor ( c ) 1 / 3 as large as the service conductor ( d ) according to Table 250.102(C)(1)

according to Table 250.102(C)(1) 250.102(C)(1)

Where extensive metal in or on buildings or structures may become energized and is subject to personal contact _________ will provide additional safety. ( a ) adequate bonding and grounding ( b ) bonding ( c ) suitable ground detectors ( d ) none of these

adequate bonding and grounding 250.116 Informational Note

Where more than two NM cables containing two or more current - carrying conductors are bundled together and pass through wood framing that is to be fire - stopped using thermal insulation, the ampacity of each conductor is __________ . ( a ) limited to 30 amps ( b ) limited to 20 amps ( c ) adjusted by 310.15(B)(2)(a) ( d ) approved by AHJ only

adjusted by 310.15(B)(2)(a) 334.80

Cabinets and cut - out boxes shall have sufficient space to accommodate __________ conductors installed in them without crowding. ( a ) all ( b ) large ( c ) low voltage ( d ) small

all 312.7

A 125 Volt, 15 or 20 amp receptacle shall be installed for the servicing of heating, air conditioning and refrigeration equipment in __________. ( a ) commercial buildings ( b ) one and two family dwellings ( c ) all apartment buildings ( d ) all locations

all locations 210.63

For equipment grounding, exposed non - current carrying metal parts of fixed equipment likely to be energized shall be grounded where __________. ( a ) in electrical contact with metal ( b ) located in a damp or wet location ( c ) equipment operates with any terminal at more than 150 volts to ground ( d ) all of the above

all of the above 250.110(2, 3, 6)

Which of the following would you find on electrode type boilers legend plate __________. ( a ) manufacturer's name ( b ) normal rating in volts, amperes, and kilowatts ( c ) electrical supply required, frequency, phase, number of wires ( d ) all of the above

all of the above 424.86(1, 2, 3)

The Code __________ . ( a ) is not intended for a design specification ( b ) is not intended for an instruction manual for untrained persons ( c ) is not necessarily efficient ( d ) all of the above

all of the above 90.1(A), 90.1(B)

Neutral conductors shall NOT be used for more than one __________ unless specifically permitted elsewhere in this Code. ( a ) set of ungrounded feeder conductors ( b ) multi - wire branch - circuit ( c ) branch - circuit ( d ) all of these

all of these 200.4

All branch circuits that supply 125 volt, single-phase, 15- and 20-ampere outlets installed in dwelling unit __________ shall be protected by an arc-fault circuit interrupter listed to provide protection of the entire branch circuit. ( a ) kitchens and laundry areas ( b ) family and dining room ( c ) closets and hallways ( d ) all of these

all of these 210.12(B)

For a one - family dwelling, at least one receptacle outlet is required in each _________ . ( a ) attached garage ( b ) detached garage with power ( c ) basement ( d ) all of these

all of these 210.52(G)

GFCI protection for personnel is required for all 15 and 20 amp, 125 volt single - phase receptacles installed in a dwelling unit __________ . ( a ) laundry ( b ) garage ( c ) shower stalls ( d ) all of these

all of these 210.8(A)(2)

GFCI protection is required for personnel __________. ( a ) for boat house ( b ) for the kitchen ( c ) laundry areas ( d ) all of these

all of these 210.8(A)(6, 8, 10)

The interior metal water piping system shall be bonded to the __________. ( a ) grounded conductor at the service ( b ) grounding electrode conductor ( c ) service equipment enclosure ( d ) all of these

all of these 250.104(A)(1)

The dirt used to back fill a trench shall NOT contain __________ that could cause damage to raceways or cables. ( a ) large rocks ( b ) paving materials ( c ) corrosive materials ( d ) all of these

all of these 300.50(E)

Conductors smaller than #1 / 0 can be connected in parallel to supply control power, provided __________ . ( a ) they are all contained within the same raceway or cable ( b ) each parallel conductor has the ampacity sufficient to carry the entire load. ( c ) the circuit overcurrent protection device rating does not exceed the ampacity of any individual parallel conductor. ( d ) all of these

all of these 310.10(G)(1) Exception No. 1

Flat cable assemblies are suitable to supply tap devices for __________ loads. the maximum branch circuit rating is 30 amps. ( a ) small appliance ( b ) small power ( c ) lighting ( d ) all of these

all of these 322.10(1)

Agricultural buildings where excessive dust and dust with water may accumulate, are defined as including all areas of __________ confinement systems, where litter dust or feed dust, including mineral feed particles may accumulate. ( a ) fish ( b ) livestock ( c ) poultry ( d ) all of these

all of these 541.7(A)

All electrical connections in marinas and boatyards must be located __________ . ( a ) not below the electrical datum plane ( b ) at least 12" above the deck of a floating pier ( c ) not less than 12" above the deck of a fixed pier ( d ) all of these

all of these 555.30(A)(B)(C)

Hoist way is a __________ in which an elevator or dumbwaiter is designed to operate. ( a ) shaft way ( b ) hatchway ( c ) well hole ( d ) all of these

all of these DEF 100

Effective safe work practices are based on which of the following ? ( a ) Type of hazard ( b ) Manner of exposure ( c ) Degree of exposure ( d ) All of these

all of these NFPA 70E

A factory installed duplex receptacle in a baseboard heater, where the heater is to be permanently installed in a commercial building is __________ . ( a ) prohibited by the code ( b ) allowed only when the receptacle is factory connected to the heater circuit ( c ) NOT allowed to be used as the required receptacle outlet for flexible cords with attachment plugs, when wired on a separate circuit from the heater circuit ( d ) allowed to be used in lieu of the required receptacle outlet for flexible cords with attachment plugs, when wired on a separate circuit from the heater circuit

allowed to be used in lieu of the required receptacle outlet for flexible cords with attachment plugs, when wired on a separate circuit from the heater circuit 210.52

Battery systems shall be permitted to serve as the __________ for all or parts of an essential electrical system. ( a ) stand alone system ( b ) back feed ( c ) standby ( d ) alternate source

alternate source 517.30(B)(3)

Adjacent load - carrying conductors have the dual effect of raising the __________ and impeding heat dissipation. ( a ) insulation rating ( b ) heat above 86 degrees Fahrenheit ( c ) ambient temperature ( d ) skin effect

ambient temperature 310.14(A)(3) I.N. 4

Circuit breakers must be marked with their __________ rating in a manner that will be durable and visible after installation ( a ) type ( b ) AIC ( c ) torque ( d ) ampere

ampere 240.83(A)

For cord-and-plug connected appliances, an accessible separable connector or __________ plug and receptacle is permitted to serve as the disconnecting means. ( a ) a readily accessible ( b ) an isolated ( c ) an accessible ( d ) a guarded

an accessible 422.33(A)

Luminaires recessed in ceilings, floors, or walls shall not be used to access outlet, pull, or junction boxes or conduit bodies, unless the box is ___________. ( a ) an integral part of the luminaire ( b ) listed as a pull box ( c ) a double gang box ( d ) listed conduit body

an integral part of the luminaire 410.118

Where overhead communications wires and cables enter buildings , they must __________. ( a ) where practicable , be located below the electric light or power conductors ( b ) NOT be attached to a cross - arm that carries electric light or power conductors ( c ) have a vertical clearance of NOT less than 8 ' from all points of roofs above which they pass ( d ) any of the above

any of the above 800.44(A)(1 & 2) • 800.44(B)

Constant voltage generators, except AC generator exciters, must be protected from overloads by __________. ( a ) circuit breakers ( b ) fuses ( c ) inherent design ( d ) any of these

any of these 445.12(A)

Direct - current carrying conductors used in electroplating systems shall be protected by __________. ( a ) fuses or circuit breakers ( b ) other approved means ( c ) a current - carrying device that operates a disconnecting means ( d ) any of these

any of these 669.9

A device that, by insertion in a receptacle, establishes a connection between the conductors of the attached flexible cord and the conductors connected permanently to the receptacle ( s ) is called a ( an ) __________ . ( a ) plug ( b ) plug cap ( c ) attachment plug ( d ) any of these

any of these DEF 100

SE cable used to supply __________ shall NOT be subject to conductor temperatures in excess of the temperature specified for the type of insulation involved. ( a ) lighting ( b ) appliances ( c ) motors ( d ) generators

appliances 338.10(B)(3)

Flexible cords approved for and used with a specific listed appliance or portable lamp are considered to be protected when __________ . ( a ) #18 AWG and larger ( b ) #16 AWG and larger ( c ) NOT more than 6' long ( d ) applied within the listing requirements

applied within the listing requirements 240.5(B)(1)

Cables or raceways installed using directional boring equipment shall be __________ for this purpose. ( a ) listed ( b ) approved ( c ) marked ( d ) labeled

approved 300.5(K)

Tightening torque values for terminal connections shall be as indicated on equipment or in installed instructions provided by the manufacturer. A / An __________ shall be used to achieve the indicated torque value. ( a ) shelf life ( b ) maintenance schedule ( c ) warranty ( d ) approved means

approved means 110.14(D)

In a dwelling, which appliance shall be grounded? ( a ) toaster ( b ) can opener ( c ) blender ( d ) aquarium

aquarium 250.114(3)(b)

An AFCI is an __________. ( a ) alternate fire collector interrupter ( b ) ampere faulting capacitor insulator ( c ) appliance - fixture circuit identifier ( d ) arc - fault circuit - interrupter

arc - fault circuit - interrupter 210.12(A)(2)

Use of Type FCC systems in damp locations __________. ( a ) are NOT permitted ( b ) must be approved by the AHJ ( c ) are permitted ( d ) are permitted in a raceway embedded in 2" of concrete

are permitted 324.10(E)

Knife switches rated for more than 1200 amperes at 250 volts _________. ( a ) are used only as isolating switches ( b ) should be placed so that gravity tends to close them ( c ) should be opened slowly under load ( d ) should be connected so blades are NOT dead in open position.

are used only as isolating switches 404.13(A)

Splices and taps shall not be located within fixture __________. ( a ) splice boxes ( b ) arms or stems ( c ) pancake boxes ( d ) none of these

arms or stems 410.56(C)

Raceways on the outside of buildings shall be __________. ( a ) arranged to drain ( b ) weatherproof and covered ( c ) rigid conduit ( d ) none of these

arranged to drain 225.22 • 230.53

The rating or setting of an overcurrent protective device used on each ungrounded conductor for each capacitor bank 600 volts or less shall be rated __________. ( a ) 125% of the full - load rating ( b ) 80% of the discharge rating ( c ) as high as practicable ( d ) as low as practicable

as low as practicable 460.8(B)

Types NM, NMC, and NMS cables shall NOT be used as follows __________. ( a ) in exposed work ( b ) as service - entrance cable ( c ) fished in voids in masonry blocks ( d ) on the outside walls of masonry block or tile

as service - entrance cable 334.12(A)(3)

Each run of nonmetallic extension must terminate in a fitting that covers the end of the __________. ( a ) assembly ( b ) device ( c ) box ( d ) extension

assembly 382.40

Torque motors are rated for operation __________ . ( a ) at full torque ( b ) at F.L.C. ( c ) at standstill ( d ) with code letter

at standstill 430.7(C)

An overcurrent device shall be located in a circuit __________. ( a ) on the line side of the meter ( b ) at the last outlet on the circuit ( c ) at the first connector in the circuit ( d ) at the point where the conductor receives its supply

at the point where the conductor receives its supply 240.21

In general, feeder and branch - circuit conductors must be protected by overcurrent devices connected __________. ( a ) within 2' of the point where the conductors receive their supply ( b ) within 3' of the point where the conductors receive their supply ( c ) within 6' of the point where the conductors receive their supply ( d ) at the point where the conductors receive their supply

at the point where the conductors receive their supply 240.21

A device which, by insertion in a receptacle, establishes connection between the conductor of the attached flexible cord and the conductors connected permanently to the receptacle is a _________. ( a ) controller ( b ) attachment plug ( c ) female plug ( d ) male insert plug

attachment plug DEF 100

Equipment intended to break current at fault levels shall have an interrupting rating at nominal circuit voltage sufficient for the current which is ___________ at the line terminals of the equipment. ( a ) at maximum ( b ) operating ( c ) available ( d ) required

available 110.9

Plug - in - type overcurrent protection devices or plug - in - type main lug assemblies that are __________ shall be secured in place by an additional fastener that requires other than a pull to release the device from the mounting means on the panel. ( a ) three - phase only ( b ) 480 volts ( c ) back fed ( d ) none of these

back fed 408.36(D)

Type USE service entrance cable, identified for underground use in a cabled assembly, may have a __________ concentric conductor applied. ( a ) bare copper ( b ) covered metal ( c ) bare aluminum ( d ) covered

bare copper 338.100(B)

General use receptacles used only by carnival personnel for the repair of carnival rides must __________. ( a ) only be accessible by carnival personnel ( b ) be of the twist - lock configuration ( c ) be GFCI protected and 20 amp in size ( d ) be GFCI protected

be GFCI protected 525.23

Electric vehicle power export equipment and electric vehicle supply equipment are sometimes contained in one piece of equipment, sometimes referred to as __________ EVSE. ( a ) Class I ( b ) single unit ( c ) bidirectional ( d ) one circuit

bidirectional 625.2 DEF I.N.

Loop wiring for underfloor raceways shall NOT be considered ___________. ( a ) a splice ( b ) a tap ( c ) both ( a ) and ( b ) ( d ) neither ( a ) or ( b )

both ( a ) and ( b ) 390.56

Temperature controlled switching devices which do NOT have an "off" position shall __________. ( a ) NOT be required to open all ungrounded conductors ( b ) NOT be permitted to serve as the disconnecting means ( c ) ( b ) only ( d ) both ( a ) and ( b )

both ( a ) and ( b ) 426.51(B) • 427.56(B)

The function of the motor overcurrent protective device is __________. ( a ) to interrupt fault currents ( b ) to interrupt overloads ( c ) both ( a ) and ( b ) ( d ) ( a ) only

both ( a ) and ( b ) 430.225(A)

Overcurrent protective devices shall be so selected and coordinated as to permit the circuit protective devices used to clear a fault without the occurrence of extensive damage to the electrical components of the circuit. This fault shall be assumed to be __________ . I. between any circuit conductor and the grounding conductor or enclosing metal raceway II. between two or more of the circuit conductors ( a ) I only ( b ) II only ( c ) both I and II ( d ) neither I and II

both I and II 110.10

Bathroom receptacle outlets shall be supplied by __________ . I. ground fault protection for personnel II. at least one 20 amp branch circuit ( a ) I only ( b ) II only ( c ) both I and II ( d ) neither I or II

both I and II 210.8(A)(1), 210.52(D)

The optional method of calculation is permitted for a multi - family dwelling unit if __________. I. each dwelling unit is equipped with either electric space heating or air conditioning or both II. no dwelling unit is supplied by more than one feeder ( a ) I only ( b ) II only ( c ) both I and II ( d ) neither I or II

both I and II 220.84(A)(1) • 220.84(A)(3)

Locations of lamps for outdoor lighting shall be __________ . I. below all energized conductors II. below all transformers ( a ) I only ( b ) II only ( c ) both I and II ( d ) neither I or II

both I and II 225.25

Service - drop conductors shall have __________. I. adequate mechanical strength II. sufficient ampacity to carry the load as computed in accordance with Article 220 ( a ) I only ( b ) II only ( c ) both I and II ( d ) neither I or II

both I and II 230.23(A)

__________ may be connected ahead of service switches. I. Surge arrestors II. Current - limiting devices ( a ) I only ( b ) II only ( c ) neither I or II ( d ) both I and II

both I and II 230.82(1)(4)

The number and size of conductors in any raceway shall NOT be more than will permit __________ . I. ready installation or withdrawal of the conductors without damage to the conductors or to their insulation II. dissipation of heat ( a ) I only ( b ) II only ( c ) both I and II ( d ) neither I or II

both I and II 300.17

Type MV cables shall NOT be used unless identified for the use ___________ . I. in cable trays II. where exposed to direct sunlight ( a ) I only ( b ) II only ( c ) both I and II ( d ) neither I or II

both I and II 311.32(3) & (8)

Which of the following statements about the protection of nonmetallic sheathed cable from physical damage is / are correct? I. When passing through a floor, the cable shall be enclosed in a pipe or conduit extending at least 6 inches above the floor. II. When run across the top of the floor joists in an accessible attic, the cable shall be protected by guard strips. ( a ) I only ( b ) II only ( c ) both I and II ( d ) neither I or II

both I and II 320.33, 334.15(B)

Messenger supported wiring shall NOT be used __________ . I. where subject to severe physical damage II. in hoist - ways ( a ) I only ( b ) II only ( c ) both I and II ( d ) neither I or II

both I and II 396.12

Fixtures which require aiming or adjusting after installation shall NOT be required to be equipped with an attachment plug or cord connector provided the exposed cord is __________. I. NOT longer than that required for maximum adjustment II. hard usage or extra - hard usage type ( a ) I only ( b ) II only ( c ) both I and II ( d ) neither I or II

both I and II 410.62(B)

Elevator traveling cables for operating __________ circuits shall contain non - metallic fillers as necessary to maintain concentricity. I. signal II. control ( a ) I only ( b ) II only ( c ) both I and II ( d ) I, II, and III

both I and II T. 400.4 Note #2

Metal panelboards must be protected against corrosion __________. ( a ) both inside and outside ( b ) outside only ( c ) inside only ( d ) NOT required

both inside and outside 312.10(A)

The rating of the branch circuit is determined by the rating of the __________ . ( a ) branch - circuit overcurrent protection ( b ) total load of appliances ( c ) total lighting load ( d ) conductor size

branch - circuit overcurrent protection 210.18

Where a __________ supplies continuous loads or any combination of continuous loads and non - continuous loads, the rating of the overcurrent device shall NOT be less than the non - continuous load plus 125% of the continuous load. ( a ) load ( b ) branch circuit ( c ) demand ( d ) conductor

branch circuit 210.20(A)

The conductors supplying the supplementary overcurrent protective devices for fixed industrial process heating equipment shall be considered __________ conductors . ( a ) supplementary ( b ) tap ( c ) by - pass ( d ) branch circuit

branch circuit 425.22(D)

Disregarding any exceptions, Type UF cable shall be permitted to be __________. ( a ) used in hoist ways ( b ) used as service entrance cable ( c ) used in storage battery rooms ( d ) buried directly in the earth for use underground

buried directly in the earth for use underground 340.10(1)

Conduit used to protect direct buried cable shall be provided with a __________ where the cable leaves the conduit underground. ( a ) seal ( b ) clamp ( c ) bushing ( d ) connector

bushing 300.5(H)

The only way to see an electrical hazard is __________ . ( a ) by wearing a switchman's hood ( b ) by observing signs and signals indicating its presence ( c ) by wearing 3D glasses ( d ) none of these

by observing signs and signals indicating its presence NFPA 70E

A __________ switch is a manually operated device used in conjunction with a transfer switch to provide a means of directly connecting load conductors to a power source, and of disconnecting the transfer switch. ( a ) transfer ( b ) motor - circuit ( c ) bypass isolation ( d ) safety

bypass isolation DEF 100

Metal enclosures used to protect __________ from physical damage shall not be required to be grounded. ( a ) service conductors ( b ) feeders ( c ) cable assemblies ( d ) none of these

cable assemblies 250.86 Exception No. 2

According to the National Electrical Code, electrical junction boxes shall be installed so that the wiring contained in the box __________. ( a ) cannot be removed ( b ) is visible at all times ( c ) is always readily accessible ( d ) can be rendered accessible without removing any part of the building or structure

can be rendered accessible without removing any part of the building or structure 314.29

Low probability of damage other than slight swelling of the capacitor case, as identified by the ___________ of the capacitor. ( a ) color ( b ) case rupture curve ( c ) residual voltage ( d ) in - rush current

case rupture curve 460.2 DEF Safe Zone

Conductor overload protection shall not be required where the interruption of the __________ would create a hazard, such as in a material - handling magnet circuit or fire - pump circuit. However, short - circuit protection is required. ( a ) service ( b ) phase ( c ) line ( d ) circuit

circuit 240.4(A)

Circuit breakers shall NOT be located in the vicinity of easily ignitable material such as in __________. ( a ) hallways ( b ) laundry rooms ( c ) clothes closets ( d ) basements

clothes closets 240.24(D)

Raceways shall be installed __________ between outlet, junction or splicing points prior to the installation of conductors. ( a ) partially ( b ) complete ( c ) straight ( d ) tightly

complete 300.18

The branch circuit breaker device shall protect all __________. ( a ) fittings ( b ) branch circuit loads ( c ) appliances ( d ) conductors and equipment

conductors and equipment 210.20

When determining the number of conductors that are considered as current - carrying, a grounding conductor is __________ . ( a ) counted as one current - carrying conductor ( b ) counted as one conductor for each ground wire in the raceway ( c ) considered to be a current - carrying conductor but NOT counted ( d ) considered to be a non - current - carrying conductor and is NOT counted

considered to be a non - current - carrying conductor and is NOT counted 310.15(F)

Any motor application shall be considered as __________ unless the nature of the apparatus it drives is such that the motor will NOT operate continuously with load under any condition of use. ( a ) short - time duty ( b ) varying duty ( c ) continuous duty ( d ) periodic duty

continuous duty T. 430.22(E) Note

The industrial control panel does not include the __________. ( a ) relays ( b ) timers ( c ) disconnect ( d ) controlled equipment

controlled equipment DEF. 100

In completed installations each outlet box shall have a __________ . ( a ) receptacle ( b ) switch ( c ) cover ( d ) fixture

cover 314.25

If safety switches are rated in horsepower, they must also be marked with a __________. ( a ) current and resistance ( b ) voltage and wattage rating ( c ) current and voltage rating ( d ) voltage and resistance rating

current and voltage rating 404.20(A)

A thermal protector is intended to protect a motor against ___________ . ( a ) dangerous overheating ( b ) short circuit ( c ) ground fault ( d ) none of these

dangerous overheating DEF 100

Additional services are permitted for different voltages, frequencies, or phases, or for different uses such as for __________ . ( a ) hospitals ( b ) aircraft hangers ( c ) special events ( d ) different rate schedules

different rate schedules 230.2(D)

Type UF cable shall be permitted for __________. ( a ) service - entrance cable ( b ) embedded in concrete ( c ) direct burial ( d ) hoist ways

direct burial 430.10(1)

Where the service disconnecting means does NOT ___________ the grounded conductor from the premises wiring, other means shall be provided for this purpose in the service equipment. ( a ) shut off ( b ) trip ( c ) isolate ( d ) disconnect

disconnect 230.75

A __________ must be located in sight from the motor location and the driven machinery location. ( a ) disconnecting means ( b ) circuit breaker ( c ) fuse ( d ) controller

disconnecting means 430.102(B)(1)

The grounded conductor of a mineral - insulated, mineral - sheathed cable Type MI shall be identified at the time of installation by a __________ marking at its termination. ( a ) distinctive ( b ) neutral ( c ) solid ( d ) identified

distinctive 200.6(A)(6)

An 8" x 8' x 4" deep junction box requires 6" of free conductor, measured from the point in the box where the conductors enter the enclosure. The 3" of conductor outside - the - box rule __________ . ( a ) could apply ( b ) does apply ( c ) does not apply ( d ) often applies

does not apply 300.14

When working on live electrical circuits , the type of screwdriver that should be used has a / an ( a ) non - conducting handle ( b ) double triangle and rated - for - volts handle ( c ) ergonomically designed handle for safety ( d ) longer blade and square handle

double triangle and rated - for - volts handle General Knowledge

Where there is more than one driving machine in an elevator room, the disconnecting means must be numbered to correspond to the identifying number of the __________ . ( a ) driving machine they control ( b ) panelboard it is fed from ( c ) the branch circuit feeding it ( d ) all of these

driving machine they control 620.51(D)(1)

Type NMC cable may be used in __________. ( a ) dry or moist locations ( b ) theaters, auditoriums or similar places of assembly ( c ) storage battery rooms ( d ) hazardous (classified) locations

dry or moist locations 334.10(B)(1)

Electrical systems that are grounded shall be connected to __________ in a manner that will limit the voltage imposed by lightning, line surges, or unintentional contact with higher - voltage lines and that will stabilize the voltage to earth during normal operation. ( a ) structure ( b ) case ( c ) earth ( d ) metal

earth 250.4(A)(1)

The minimum length required for a junction box in a straight pull is __________. ( a ) six times the trade diameter of the largest raceway ( b ) eight times the trade diameter of the largest raceway ( c ) four times the cross sectional area of the largest conductor ( d ) eight times the cross sectional area of the largest conductor

eight times the trade diameter of the largest raceway 314.28(A)(1)

Cables of the AC type, except ACL, shall have an internal bonding strip of __________ in intimate contact with the armor for its entire length. I. aluminum II. copper ( a ) I only ( b ) II only ( c ) either I or II ( d ) neither I or II

either I or II 320.100

Wall - mounted ovens and counter - mounted cooking units complete with provisions for mounting and for making electrical connections, shall be permitted to be __________. I. plug - and - cord connected II. permanently connected ( a ) I only ( b ) II only ( c ) either I or II ( d ) neither I or II

either I or II 422.16(B)(3)

Which of the following wiring methods is permitted through an air conditioning duct? ( a ) electrical metallic tubing (EMT) ( b ) PVC ( c ) no wiring method is permitted in an A / C duct ( d ) romex

electrical metallic tubing (EMT) 300.22(B)

Conductors that are paralleled, are __________. ( a ) joined their full length ( b ) electrically connected at one end only ( c ) electrically joined at both ends to double the resistance ( d ) electrically joined at both ends

electrically joined at both ends 310.10(G)(1)

Surrounded by a case, housing, fence, or wall ( s ) that prevents persons from accidentally contacting energized parts is called __________ . ( a ) protected ( b ) guarded ( c ) isolated ( d ) enclosed

enclosed DEF 100

Auxiliary equipment for electric - discharge lamps shall be __________ and treated as sources of heat. ( a ) enclosed in noncombustible cases ( b ) thermally protected ( c ) weatherproof ( d ) ventilated

enclosed in noncombustible cases 410.104(A)

Where installed in a metal raceway, all conductors of all feeders using a common neutral shall be __________. ( a ) insulated for 600 volt ( b ) enclosed within the same raceway ( c ) shielded ( d ) none of these

enclosed within the same raceway 215.4(B)

Type SE cables are permitted for use for branch circuits or feeders where the insulated conductors are used for circuit wiring and the uninsulated conductor is used only for __________. ( a ) equipment grounding ( b ) remote control signaling ( c ) the grounded neutral ( d ) none of these

equipment grounding 338.10(B)(2)

Accessible conductive parts bonded together to reduce voltage gradients is a / an __________. ( a ) datum plane ( b ) equipotential plane ( c ) effective ground point ( d ) island mode

equipotential plane DEF 100

Concrete-encased electrodes of __________ shall NOT be required to be part of the grounding electrode system where the steel reinforcing bars or rods aren't accessible for use without disturbing the concrete. ( a ) gas stations ( b ) hazardous locations ( c ) health care facilities ( d ) existing buildings

existing buildings 250.50 Exception

Cable bus shall be installed only for __________ work. ( a ) exposed ( b ) commercial ( c ) concealed ( d ) hazardous

exposed 370.10(1)

It is the intent of the Code that __________ wiring or the construction of equipment need NOT be inspected at the time of installation of the equipment, if the equipment has been listed by a qualified electrical testing laboratory. ( a ) factory - installed internal ( b ) factory - installed ( c ) underground ( d ) raceway

factory - installed internal 90.7

Class I locations are those that are hazardous because of __________. ( a ) the presence of combustible dust ( b ) over 8' depth of water ( c ) flammable gases or vapors are or may be present in the air ( d ) the presence of easily ignitable fibers or flyings

flammable gases or vapors are or may be present in the air 500.5(B)

Use of UF cable is permitted __________. ( a ) where embedded in poured concrete ( b ) in theaters ( c ) for wiring in wet locations ( d ) as service entrance conductors.

for wiring in wet locations 340.10(3)

Horizontal runs of RMC supported by openings through __________ at intervals NOT exceeding 10' and securely fastened within 3' of termination points are permitted. ( a ) concrete walls ( b ) framing members ( c ) rafters ( d ) trusses

framing members 344.30(B)(4)

The total number of AC cycles completed in one second is the current's __________ . ( a ) phase ( b ) alternation ( c ) frequency ( d ) timing

frequency General Knowledge

A __________ is a building or portion of a building in which one or more self - propelled vehicles can be kept for use, sale, storage, rental, repair, exhibition, or demonstration. ( a ) garage ( b ) commercial garage ( c ) residential garage ( d ) service garage

garage DEF 100

Type SE cable is permitted to be formed in a ___________ and taped with self - sealing weather - resistant thermoplastic. ( a ) doughnut ( b ) gooseneck ( c ) turtleback ( d ) loop

gooseneck 230.54(B) ex.

The color __________ may have been used in the past as an ungrounded conductor. Care should be taken when working on existing systems. ( a ) green ( b ) white ( c ) gray ( d ) orange

gray 200.7(C)(2) I.N.

A device intended for the protection of personnel that functions to de - energize a circuit or portion thereof within an established period of time when the current to ground exceeds the values established for a Class A device, is a / an __________. ( a ) limit switch ( b ) circuit breaker ( c ) ground - fault interrupter (GFI) ( d ) fuse

ground - fault interrupter (GFI) DEF 100

Screw - shell lamp holders shall be wired so that the __________ conductor is connected to the screw - shell. ( a ) bare ( b ) ungrounded ( c ) grounded ( d ) grounding

grounded 200.10(C)

A continuous white or gray covering on a conductor shall be used only for the __________ conductor. ( a ) grounding ( b ) ungrounded ( c ) hot ( d ) grounded

grounded 200.7(A)

In multiwire circuits, the continuity of the __________ conductor must NOT be dependent upon the device connections. ( a ) red ( b ) black ( c ) ungrounded ( d ) grounded

grounded 300.13(B)

The circuit conductor that is defined as being intentionally grounded is the __________ conductor. ( a ) equipment grounding ( b ) grounding ( c ) grounded ( d ) grounding electrode

grounded DEF. 100

400.22(F)A ridge on the exterior of a flexible cord is used to mark __________. ( a ) high potential conductors ( b ) the grounding conductor ( c ) the grounded conductor ( d ) the underground conductor

grounded conductor 400.22(F)

A green wire with yellow stripes used in a branch - circuit would be the __________ conductor. ( a ) grounded ( b ) grounding ( c ) neutral ( d ) ungrounded

grounding 250.119

A __________ is an accommodation that combines living, sleeping, sanitary, and storage facilities. ( a ) dwelling unit ( b ) single - family dwelling ( c ) guest suite ( d ) guest room

guest room DEF 100

A / an __________ is a room in a building for living, sleeping, eating, or cooking but excluding bathrooms, toilet rooms, closets, hallways, storage or utility spaces and similar areas. ( a ) guest room ( b ) guest suite ( c ) RV tent space ( d ) habitable room

habitable room DEF 100

Heat generated internally in the conductor as the result of load current flow, including fundamental and ___________ currents. ( a ) dissipation ( b ) alternation ( c ) harmonic ( d ) transfer

harmonic 310.14(A)(3)(2)

Each fitting attached to a heavy - duty lighting track shall __________. ( a ) have individual overcurrent protection ( b ) have double lock nuts ( c ) be raintight ( d ) NOT be over 3' in length

have individual overcurrent protection 410.153

What type of lamp holder is required in a branch circuit in excess of 20 amperes? ( a ) brass ( b ) porcelain coated ( c ) shall not be of the interchangeable type ( d ) heavy duty

heavy duty 210.21(A)

Plug fuses must have what specific shape? ( a ) octagonal ( b ) square ( c ) hexagonal ( d ) round

hexagonal 240.50(C)

A permanent and legible single - line diagram of the local switching arrangements, clearly identifying each point of connection to the __________ section, shall be provided within sight of each point of connection. ( a ) service ( b ) feeder ( c ) high - voltage ( d ) switch - gear

high - voltage 490.25(B)

Dual - voltage motors that have a different locked - rotor kVA per horsepower on the two voltages shall be marked with the code letter for the voltage giving the __________ locked - rotor kVA per horsepower. ( a ) highest ( b ) average ( c ) lowest ( d ) normal

highest 430.7(B)(3)

Because aluminum is NOT a magnetic metal, there will be no heating due to __________. ( a ) electrolysis ( b ) hysteresis ( c ) hermetic ( d ) galvanic action

hysteresis 300.20(B) Informational Note

Unused openings for breakers in panelboards must be closed using __________ or other approved means. ( a ) sheet metal ( b ) duct seal ( c ) exothermic welding ( d ) identified closures

identified closures 408.7

Temporary wiring shall be removed __________ upon completion of construction or purpose for which the wiring was installed. ( a ) 30 days ( b ) immediately ( c ) A.S.A.P. ( d ) 60 days.

immediately 590.3(D)

The SPD shall be an integral part of the service equipment or shall be located__________. ( a ) within 12" ( b ) immediately adjacent thereto ( c ) within 2" ( d ) within sight

immediately adjacent thereto 230.67(B)

Temporary wiring used on a construction project shall be removed ___________. ( a ) immediately upon completion of the construction ( b ) one week before final inspection of construction ( c ) 15 days before final inspection of construction ( d ) one week after final inspection of construction

immediately upon completion of the construction 590.3(D)

" Z. P. "is an abbreviated marking used for motors to indicate __________ . ( a ) single - phase ( b ) induction - protected ( c ) thermally protected ( d ) impedance protected

impedance protected 430.7(A)(14)

Cable tray systems shall not be used __________. ( a ) in hoist ways ( b ) for power and control applications ( c ) for signal cables ( d ) for service - entrance systems

in hoist ways 392.12

Type TC power and control cable may be used __________. ( a ) in outdoor locations when supported by a messenger cable ( b ) as open cable on brackets ( c ) where exposed to physical damage ( d ) none of these

in outdoor locations when supported by a messenger cable 336.10(4)

Overcurrent devices in an auto - transformer shall NOT be installed __________. ( a ) in series with the shunt winding ( b ) in parallel with the output conductors ( c ) in series with the output conductors ( d ) in parallel with the shunt winding

in series with the shunt winding 450.4(A)

All heating elements that are replaceable __________ and are a part of an electric heater shall be legibly marked with the rating in volts and watts, or in volts and amperes. ( a ) in the shop ( b ) by the manufacturer ( c ) in the field ( d ) none of these

in the field 424.29

Central heating equipment, other than fixed electric space - heating equipment, must be supplied by a / ( n ) __________ branch circuit. ( a ) appliance ( b ) individual ( c ) HARC ( d ) controlled

individual 422.12

A system in which heat is generated in a pipeline or vessel wall by inducing current and hysteresis in the pipeline or vessel wall from an external isolated ac. field source is called a / an __________ heating system. ( a ) integrated ( b ) induction ( c ) impedance ( d ) direct

induction 427.2

The neutral conductor of an impedance grounded neutral system shall be __________. ( a ) unmarked ( b ) smaller ( c ) insulated ( d ) none of these

insulated 250.187(B)

The temperature limitation of MI cable is based on the __________. ( a ) ambient temperature ( b ) conductor insulation ( c ) insulating materials used in the end seal ( d ) none of these

insulating materials used in the end seal 332.80

Over 1000v, mechanical __________ shall be provided in the housing to prevent the complete withdrawal of the circuit from the housing when the stored energy mechanism is in the fully charged position, unless a suitable device is provided to block the closing function of the circuit breaker before complete withdrawal. ( a ) relay ( b ) lever ( c ) interlocks ( d ) reset

interlocks 490.45(B)

Equipment listed by a qualified electrical testing laboratory is not required to have the factory installed __________ wiring inspected at the time of installation except to detect alterations or damage. ( a ) internal ( b ) external ( c ) associated ( d ) low - voltage

internal 90.7

Equipment intended to interrupt current at fault levels shall have an __________ rating at nominal circuit voltage sufficient for the current that is available at the line terminals of the equipment. ( a ) operating ( b ) interrupting ( c ) ampacity ( d ) temperature

interrupting 110.9

Every motor controller must be capable of starting and stopping a motor. It must also be capable of __________. ( a ) providing overcurrent protection ( b ) providing ground - fault protection ( c ) detecting variances in the circuit voltage ( d ) interrupting the locked rotor current of the motor

interrupting the locked rotor current of the motor 430.82(A)

A receptacle which is secured solely by a single screw, installed in a raised cover on a four square box _________. ( a ) is prohibited in all cases ( b ) is allowed without exception ( c ) is allowed only for a box cover listed for such use ( d ) is allowed only when the raised cover is installed on a non - metallic box.

is allowed only for a box cover listed for such use 406.5(C)

Lighting equipment identified for horticultural use shall NOT be installed as lighting for general illumination unless such use is __________. ( a ) approved ( b ) listed ( c ) identified ( d ) is indicated in the manufacturer's instructions

is indicated in the manufacturer's instructions 410.176(A)

Indoor installations of dry - type transformers greater than 112.5 kVA must be in an approved transformer room unless the transformer ( s ) __________. ( a ) is rated at 75 degrees C ( b ) primary is 2100 volts or less ( c ) is rated at more than 35,000 volts ( d ) is rated with Class 155 insulation or higher and separated from combustibles with appropriate barriers

is rated with Class 155 insulation or higher and separated from combustibles with appropriate barriers 450.21(B) Exception No. 1

A single made electrode with a resistance to ground of more than 25Ω is approved as a grounding electrode system if __________. ( a ) the made electrode is constructed of copper ( b ) the made electrode is constructed of aluminum ( c ) the ground rod is driven into the earth 8 feet or more ( d ) it is supplemented by one or more additional electrodes

it is supplemented by one or more additional electrodes 250.53(A)(2)

The ampacity of a conductor is defined by the National Electrical Code to be the current in amperes a conductor can carry continuously under the conditions of use without exceeding __________. ( a ) the allowable voltage drop limitations ( b ) its temperature rating ( c ) its rated voltage ( d ) its melting point

its temperature rating DEF 100

Soldered splices must be __________ so as to be electrically secure before soldering. ( a ) tinned ( b ) joined mechanically ( c ) taped ( d ) insulated

joined mechanically 110.14(B)

Wall - switch controlled receptacles in dwelling units in lieu of lighting outlets are allowed in all habitable rooms except __________. ( a ) bedrooms ( b ) kitchen and bath ( c ) living and family ( d ) basement and attic

kitchen and bath 210.70(A) Exception No. 1

Where a single equipment grounding conductor is run with multiple circuits in the same raceway or cable, it shall be sized for the __________ over current device protecting conductors in the raceway or cable. ( a ) least ( b ) total ( c ) largest ( d ) average

largest 250.122(C)

Service conductors between the street main and the first point of connection to the service entrance run underground is known as the service __________ . ( a ) drop ( b ) loop ( c ) lateral ( d ) cable

lateral DEF 100

The number of #12 THW conductors allowed in a 3 / 4" IMC conduit will be __________ the number of #12 TW conductors allowed in a 3 / 4" conduit. ( a ) equal to ( b ) greater than ( c ) less than ( d ) none of these

less than Tables 4 & 5

Not more than one conductor shall be connected to the grounding electrode by a single clamp or fitting unless the clamp or fitting is __________ . ( a ) cast bronze or brass ( b ) listed for multiple conductors ( c ) 0.043" in thickness ( d ) none of these

listed for multiple conductors 250.70

Fluorescent lighting fixtures may be used as raceways if __________. ( a ) they are connected by a conduit wiring method ( b ) they are wired so that conductors are NOT closer than 3" from the ballast ( c ) listed for use as a raceway ( d ) none of these

listed for use as a raceway 410.64(A)

When a controller is NOT within sight from the motor location, the disconnect shall be capable of being __________ in the open position. ( a ) down ( b ) up ( c ) lockable in accordance with 110.25 ( d ) shut - off

lockable in accordance with 110.25 430.102 Exception No. 1

The maximum current shall be stand - alone continuous inverter input current rating when the inverter is producing rated power at the __________ . ( a ) RMS voltage ( b ) lowest input voltage ( c ) highest input voltage ( d ) contact limit voltage

lowest input voltage 710.12

Lighting outlets can be controlled by occupancy sensors equipped with a _________ that will allow the sensor to function as a wall switch. ( a ) photo cell ( b ) time delay ( c ) resistor ( d ) manual override

manual override 210.70(A)(1) Exception No. 2

All boxes and conduit bodies, covers, extension rings, plaster rings, and the like shall be durably and legibly marked with the __________ or trademark. ( a ) weight ( b ) cubic inch capacity ( c ) Listing ( d ) manufacturer's name

manufacturer's name 314.44

Receptacles shall be listed for the purpose and marked with the __________ or identification and voltage and ampere. ( a ) wire size ( b ) manufacturer's name ( c ) frequency ( d ) type

manufacturer's name 406.3(A)

Receptacles installed in a guest room of a motel __________. ( a ) must be spaced as a dwelling ( b ) are not subject to Code spacing ( c ) may be located conveniently for permanent furniture layout ( d ) may be installed only if prior approval is given by the local inspector

may be located conveniently for permanent furniture layout 210.60(B)

Supplementary overcurrent protection __________. ( a ) must be readily accessible ( b ) must NOT be used in luminaires ( c ) may be used to protect internal circuits of equipment ( d ) may be used as a substitute for a branch - circuit overcurrent protection device.

may be used to protect internal circuits of equipment 240.10

Underground service conductors shall have sufficient ampacity to carry the current for the load as calculated and shall have adequate __________ strength. ( a ) equivalent ( b ) physical ( c ) mechanical ( d ) conductor

mechanical 230.31(A)

Where motors are provided with terminal housings, the housings must be of __________ and of substantial construction. ( a ) metal ( b ) plastic ( c ) steel ( d ) all of these

metal 430.12(A)

How would you seal unused ko's in panels and boxes? ( a ) cardboard ( b ) duct seal ( c ) tape ( d ) metal plugs and plates

metal plugs and plates 110.12(A)

Metal raceways, cable armor, and other metal enclosures shall be ___________ joined together into a continuous electric conductor so as to provide effective electrical continuity. ( a ) permanently ( b ) continuously ( c ) electrically ( d ) metallically

metallically 300.10

Overhead track and hoist system for moving material around the boatyard or moving or launching boats is the definition of __________. ( a ) monorail ( b ) boat lift ( c ) track hoist ( d ) boat jack

monorail 555.2

The secondary circuits of wound - rotor AC motors, including conductors, controllers, resistors, etc., shall be considered as protected against overload by the __________ . ( a ) disconnect ( b ) controller ( c ) breaker ( d ) motor - overload device

motor - overload device 430.32(E)

A disconnecting means is required to disconnect the __________ from the circuit. ( a ) motor and controller ( b ) motor ( c ) motor or controller ( d ) controller

motor and controller 430.101

A feeder or service neutral load shall be the maximum unbalance of the load calculated. The maximum unbalanced load shall be the maximum net calculated load between the __________ conductor and any one ungrounded conductor. ( a ) grounded ( b ) grounding ( c ) ungrounded ( d ) neutral

neutral 220.61(A)

What kind of lighting loads does the Code say there shall be no reduction in the size of the neutral conductor? ( a ) dwelling unit ( b ) hospital ( c ) nonlinear ( d ) motel

nonlinear 220.61(C)(2)

The connection of a grounding electrode conductor to a driven ground rod shall be __________ . ( a ) visible ( b ) accessible ( c ) readily accessible ( d ) not required to be accessible

not required to be accessible 250.68(A) Exemption

Elevators shall have a single means for disconnecting car light, receptacle ( s ) and ventilation power supply. This disconnect shall be __________ to correspond to the specific elevator car number whose power it controls. ( a ) mounted ( b ) located ( c ) numbered ( d ) fused

numbered 620.53

The Code requires all conductors that attach to a cable bus to be in the same raceway because __________. ( a ) of less voltage drop ( b ) the cost is less ( c ) it is easier to service ( d ) of inductive current

of inductive current 300.20(A)

A wall switch marked with the __________ shall completely disconnect all ungrounded conductors to the load it controls, ( a ) off position ( b ) voltage ( c ) amps ( d ) horsepower

off position 404.20(B)

Where the transformer supplying the service is located outside the building, at least __________ additional grounding connection be made from the grounded service conductor to a grounding electrode, either at the transformer or elsewhere outside the building. ( a ) one ( b ) two ( c ) three ( d ) four

one 250.24(A)(2)

At least __________ receptacle outlet shall be installed outdoors. A receptacle outlet located in a compartment accessible from the the park trailer shall be considered an outdoor receptacle. ( a ) one ( b ) two ( c ) three ( d ) none required

one 552.41(E)

Vertical and horizontal spacing between supported cable bus conductors shall NOT be less than __________ at the points of support. ( a ) 1" ( b ) 1 - 1 /2" ( c ) 2" ( d ) one conductor diameter

one conductor diameter 370.30(B)

After normal power fails, what is the MAXIMUM delay permitted in a legally required emergency standby system before emergency power is available? ( a ) 30 seconds ( b ) one minute ( c ) two minutes ( d ) three minutes

one minute 701.12

Plug fuses of the Edison - base type shall be used __________ . ( a ) where over fusing is necessary ( b ) only for 50 amps and above ( c ) as a replacement for type S fuses ( d ) only as a replacement item in existing installations

only as a replacement item in existing installations 240.51(B)

The service disconnecting means must plainly indicate whether it is in the __________ position. ( a ) tripped ( b ) correct ( c ) up or down ( d ) open or closed

opened or closed 230.77

Throughout the Code, the voltage considered shall be that at which the circuit __________. ( a ) is grounded ( b ) feeds ( c ) operates ( d ) drops

operates 110.4

When determining the load on the "volt - amps per square foot" basis, the floor area shall be computed from the __________ dimensions of the building ( a ) inside ( b ) outside ( c ) midpoint ( d ) any of these

outside 220.12

In determining load on the volt - amperes per square foot basis, the __________ the building shall be used. ( a ) number of rooms in ( b ) height of ( c ) outside dimensions of ( d ) inside dimensions of

outside dimensions of 220.12

When a capacitor contains __________ of flammable liquid, it shall be enclosed in a vault or an outdoor fenced enclosure. ( a ) over 2 gallons ( b ) over 3 gallons ( c ) over 4 gallons ( d ) over 5 gallons

over 3 gallons 460.3(A)

Any current in excess of the rated current of equipment, or the ampacity of a conductor, is called __________ current. ( a ) over ( b ) faulted ( c ) shorted ( d ) trip

overcurrent DEF 100

Vegetation such as trees shall NOT be used for support of _________. ( a ) lighting fixtures ( b ) brackets or clamps ( c ) overhead conductor spans ( d ) none of these

overhead conductor spans 225.26

Adjustable Speed Drive Systems: The incoming branch circuit or feeder to power conversion equipment included as a part of an adjustable - speed drive system shall be based on the rated input to the power conversion equipment. Where the power conversion equipment is marked to indicate that overload protection is included, additional ____________ protection shall NOT be required. ( a ) lockout ( b ) overload ( c ) disconnect ( d ) fuses

overload 430.124(A)

The motor nameplate full - load current rating is used for sizing the __________. ( a ) branch circuit conductors ( b ) motor - disconnecting device ( c ) branch circuit short circuit fuse ( d ) motor - overload protection device

overload 430.6(A)(2)

A motor controller that includes motor overload protection suitable for group motor application shall be marked with the motor __________ for such applications. ( a ) overload protection ( b ) kVA ( c ) watts ( d ) manufacturer

overload protection 430.8

Delta breakers shall NOT be installed in a / an ___________. ( a ) buss ( b ) box ( c ) enclosure ( d ) panelboard

panelboard 408.36(C)

Where __________ conductors are run in separate raceway or cables, the same number of conductors must be used in each raceway or cable. ( a ) aluminum ( b ) control ( c ) parallel ( d ) communication

parallel 310.10(G)(1)

A __________ is a compartment or chamber to which one or more air ducts are connected and which forms part of the air distribution system. ( a ) duct ( b ) triplex ( c ) plenum ( d ) tap

plenum DEF 100

Receptacles mounted on __________ need NOT be grounded. ( a ) outdoor circuits ( b ) garage walls ( c ) portable generators ( d ) electric ranges

portable generators 406.4(B) Exception No. 1

When building disconnecting means is a power - operated switch or circuit breaker, it must be able to be opened by hand in the event of a __________ . ( a ) power failure ( b ) short circuit ( c ) ground fault ( d ) power surge

power failure 225.38(A)

The health care facility power source is a normal source consisting of generating units on the __________ the alternate source shall be either another generation set or an external utility service. ( a ) premises ( b ) remote location ( c ) 3' from main ( d ) vaulted room

premises 517.41(B)

Each multi - wire branch circuit shall be __________ at the point where the branch circuit originates. ( a ) run in the same raceway ( b ) restricted to the same floor of the dwelling ( c ) provided with a means to simultaneously disconnect all the ungrounded conductors. ( d ) provided with a disconnecting means one standard size larger than normally required

provided with a means to simultaneously disconnect all the ungrounded conductors 210.4(B)

EMT installed in a wet location, shall have its coupling and connectors __________. ( a ) protected against corrosion ( b ) corrosion resistant ( c ) raintight type ( d ) none of these

raintight type 314.15 • 358.42

Overcurrent protection devices must be __________ . ( a ) inaccessible to unauthorized personnel ( b ) visible ( c ) accessible (as applied to equipment) ( d ) readily accessible

readily accessible 240.24(A)

All cut ends of rigid metal conduit (RMC) shall be __________. ( a ) threaded ( b ) electrically continuous ( c ) reamed ( d ) cut square

reamed 344.28

Connection from any grounding conductor type FCC cable shall be made to the shield system at each __________ . ( a ) receptacle ( b ) outlet ( c ) switch ( d ) junction

receptacle 324.42(A)

A cord connector that is supported by a permanently installed cord pendant shall be considered __________ . ( a ) receptacle outlet ( b ) permanent cord ( c ) lighting outlet ( d ) outlet device

receptacle outlet 210.50(A)

Which of the following statements about FCC cable is NOT true? ( a ) a bottom shield shall be installed beneath all type FCC cable, connectors, and insulating ends. ( b ) FCC cable can cross over or under flat telephone cable. ( c ) an FCC system with a height above floor level exceeding 0.090 inches shall be tapered ( d ) receptacles and connections need NOT be polarized

receptacles and connections need NOT be polarized 324.40(B)

Low - voltage fuse holders and low - voltage non - renewable fuses shall NOT be __________. ( a ) reconditioned ( b ) used in dwellings ( c ) 300 volt rating ( d ) classified

reconditioned 240.62

A current - limiting overcurrent protective device is a device which will __________ the current flowing in the faulted circuit. ( a ) reduce ( b ) increase ( c ) maintain ( d ) none of these

reduce 240.2 DEF

In general, controller enclosures shall be grounded if the voltage exceeds __________. ( a ) 150 volts ( b) 300 volts ( c ) regardless of voltage ( d ) no grounding is required

regardless of voltage 250.112

A factory - assembled structure or structures transportable in one or more sections that are built on a permanent chassis and designed to be used as other than a dwelling unit without a permanent foundation is the definition of a / an __________. ( a ) RV ( b ) mobile home ( c ) manufactured building ( d ) relocatable structure

relocatable structure 545.2

When one electrical circuit controls another circuit through a relay, the first circuit is called a __________ . ( a ) signal circuit ( b ) control circuit ( c ) controller circuit ( d ) remote - control circuit

remote - control circuit DEF 100

Where pull and junction boxes are used, one or more sides of any pull box shall be __________. ( a ) blocked ( b ) solid ( c ) welded ( d ) removable

removable 314.71(C)

Tubular, strip, and immersion heaters are all types of __________ heaters. ( a ) resistance ( b ) induction ( c ) impedance ( d ) integrated

resistance 427.2 Informational Note

When installing ventilation system electrical controls, they shall be arranged so the airflow can be __________. ( a ) vented ( b ) reversed ( c ) looped ( d ) prevented

reversed 110.57

At what angle does a header attach to a floor duct? ( a ) reverse ( b ) parallel ( c ) right angle ( d ) none of these

right angle 372.18(A)

For general wiring in Class I, Division 1 locations, it is permissible to use __________. ( a ) rigid metal conduit ( b ) flexible metallic tubing ( c ) electrical metallic tubing ( d ) rigid non - metallic conduit

rigid metal conduit 501.10(A)(1)(1)

When installing fuses over 1000v, they must be installed in __________with each ungrounded conductor. ( a ) parallel ( b ) series ( c ) group ( d ) line

series 240.100(2)

The temperature rating of a conductor is the maximum temperature, at any location along its length, that the conductor can withstand over a prolonged time period without __________. ( a ) tripping the breaker ( b ) serious degradation ( c ) short circuiting ( d ) a ground fault

serious degredation 310.14(A)(3) I.N.

The service grounding electrode conductor is sized by the rating of the __________. ( a ) load to be served ( b ) supply transformer ( c ) overcurrent protective device ( d ) service - entrance conductors

service - entrance conductors T. 250.66

The terminal bar in a panelboard is connected to the neutral bar only when the panelboard is used as __________. ( a ) fire alarm circuits ( b ) service equipment ( c ) sign lighting ( d ) pool equipment

service equipment 250.24(A)

Service cables must be equipped with a __________ listed for use in a wet location. ( a ) cover ( b ) conduit ( c ) service head ( d ) coupling

service head 230.54(B), 314.15

Each cable entering a cut - out box __________ . ( a ) can be sleeved through a bushing ( b ) shall be secured to the cut - out box ( c ) can have a maximum 2 cables per connector ( d ) all of these

shall be secured to the cut - out box 312.5(C)

The maximum size rigid metal conduit allowed for electrical construction is __________. ( a ) 4" ( b ) 6" ( c ) 8" ( d ) 12"

size 6 344.20(B)

HDPE conduit larger than trade size __________ shall NOT be used. ( a ) 3 ( b ) 4 ( c ) 5 ( d ) 6

size 6 353.20(B)

RTRC larger than size __________ shall not be used. ( a ) 2 ( b ) 4 ( c ) 6 ( d ) 10

size 6 355.20(B)

In dwelling units, when determining the spacing of general - use receptacles, __________ on exterior walls are NOT considered wall space. ( a ) sliding panels ( b ) windows ( c ) fixed panels ( d ) all of these

sliding panels 210.52(A)(2)(2)

Bends in ITC cable must be made __________ . ( a ) using listed bending tools ( b ) not less than 4 times the diameter of the cable ( c ) not to exceed 30° ( d ) so as not to damage the cable

so as not to damage the cable 727.10

Wire terminals located in panelboards shall be arranged __________. ( a ) so they are NOT readily accessible ( b ) so they may NOT be tampered with or changed ( c ) so the installer must reach across the ungrounded lines ( d ) so it will NOT be necessary for service personnel to reach across or beyond an uninsulated ungrounded line bus to make connections

so it will NOT be necessary for service personnel to reach across or beyond an uninsulated ungrounded line bus to make connections 408.18(C)(1)

Service conductors shall be attached to the disconnecting means by pressure connectors, clamps or other approved means, except connections that depend on __________ shall NOT be used. ( a ) solder ( b ) tension ( c ) bolts ( d ) pressure

solder 230.81

Connection devices or fittings must NOT connect grounding conductors to equipment by means of __________ . ( a ) pressure connections ( b ) solder ( c ) lugs ( d ) approved means

solder 250.70

Where devices containing a disconnecting means are mounted out of reach, suitable means shall be provided to operate the disconnecting means from the floor on a busway. Which of the following is permitted? ( a ) devices cannot be mounted out of reach ( b ) ladders ( c ) sticks ( d ) no method is permitted

sticks 368.17(C)

Only wiring methods recognized as __________ are included in the Code. ( a ) approved ( b ) suitable ( c ) listed ( d ) identified

suitable 110.8

All fixtures installed in damp locations shall be marked __________. ( a ) waterproof ( b ) suitable for wet locations ( c ) damp locations ( d ) weatherproof

suitable for wet locations 410.10(A)

422.46Electrically heated smoothing irons shall be equipped with an identified __________ means. ( a ) disconnecting ( b ) temperature - limiting ( c ) cooling ( d ) shut - off

temperature - limiting 422.46

Wiring inside luminaires shall be arranged so they are NOT subject to __________ above those for which they are rated. ( a ) temperatures ( b ) insulations ( c ) mounting heights ( d ) moisture

temperatures 410.48

In order to __________ NUCC, the conduit must be trimmed away from the conductors or cables using an approved method that will NOT damage the conductor or cable insulation or jacket. ( a ) install in a workman - like manner ( b ) terminate ( c ) connect to the fitting properly ( d ) all of these

terminate 354.28

When receptacles are connected to circuits having different voltages, frequencies, or types of current (AC or DC) on the same premises __________. ( a ) each receptacle must be tagged for the intended use ( b ) the attachment plugs must be of a design so they are NOT interchangeable ( c ) NONE of the receptacles are allowed to be used without proper supervision ( d ) one type must have a means of disconnection from the circuit when another type is used

the attachment plugs must be of a design so they are NOT interchangeable 406.4(F)

Agricultural buildings housing animals and livestock require __________. ( a ) no equipment grounding means ( b ) grounding per hazardous location restrictions ( c ) grounding only when water is used to wash livestock ( d ) the equipment grounding conductor run underground to be insulated

the equipment grounding conductor run underground to be insulated 547.5(F)

Where flexible cord is used in listed extension cord sets, the conductors are considered protected against overcurrent when used within __________ . ( a ) indoor installations ( b ) the extension cord's listing ( c ) non - hazardous locations ( d ) 75' of the panelboard

the extension cord's listing 240.5(B)(3)

Each disconnecting means must be legibly marked to indicate its purpose unless located and arranged so ___________. ( a ) they are not readily accessible ( b ) that they can be locked and tagged out ( c ) the purpose is evident ( d ) that they operate at less than 300 volts to ground

the purpose is evident 110.22

Dry - type transformers must be readily accessible except for __________. ( a ) those with a full - load current rating of 125 amps or less ( b ) those with a full - load current rating of 250 amps or less ( c ) those rated at 1000 volts or less and located in open walls, columns, or structures ( d ) those rated 601 volts or more and located in the open walls, columns, or structures

those rated at 1000 volts or less and located in open walls, columns, or structures 450.13(A)

All cut ends of flexible metal conduit must be trimmed or otherwise finished to remove rough edges, except where fittings __________ . ( a ) contain insulated bushings ( b ) are listed for grounding ( c ) thread into convolutions ( d ) are the compression type

thread into convolutions 348.28

Where the number of current - carrying conductors in a raceway is seven, the individual ampacity of each conductor shall be reduced __________. ( a ) to 70% due to the number of conductors ( b ) to 80% if they are continuous loads ( c ) to both ( a ) and ( b ) if both conditions exist ( d ) neither apply if the ambient temperature is below 30 degrees Celsius or 86 degrees Fahrenheit

to 70% due to the number of conductors T. 310.5(C)(1)

Autotransformers are permitted in branch circuits when __________. ( a ) transforming 240V, three - phase to single phase 120V ( b ) transforming 480V to 120V ( c ) transforming 208V to 240V ( d ) NOT permitted by the Code

transforming 208V to 240V 210.9 Exception No. 1

The symbol for a three - phase delta wound generator consists of a circle with a __________ scribed inside. ( a ) cross ( b ) triangle ( c ) Y ( d ) star

triangle General Knowledge

Type TC cables with metallic shielding shall have a minimum bending radius of NOT less than __________ times the cable overall diameter. ( a ) ten ( b ) twelve ( c ) twenty four ( d ) thirty six

twelve 336.24

When counting the number of conductors in a box, a conductor running through the box with an unbroken loop NOT less than twice the minimum length required for free conductors is counted as __________ conductor ( s ). ( a ) one ( b ) two ( c ) four ( d ) not counted

two conductors 314.16(B)(1)

Which of the following may NOT be used as a grounding electrode? ( a ) driven ground rod ( b ) metallic cold - water pipe ( c ) underground metallic gas pipe ( d ) A grounding ring consisting of a #2 bare copper

underground metallic gas pipe 250.52(B)(1)

In general, switches shall be wired so that all switching is done in the __________ conductor. ( a ) grounded ( b ) ungrounded ( c ) both ( a ) and ( b ) ( d ) neither ( a ) nor ( b )

ungrounded 404.2(A)

An overcurrent trip unit of a circuit shall be connected in series with each __________ . ( a ) ungrounded conductor ( b ) grounded conductor ( c ) overcurrent device ( d ) transformer

ungrounded conductor 240.15(A)

The effective grounding path to ground from circuits, equipment and metal equipment enclosures shall NOT ___________. ( a ) have sufficiently low impedance to limit the voltage to ground ( b ) use earth as the sole equipment - grounding conductor ( c ) have the capacity to conduct safely any fault currents to ground ( d ) be permanent and continuous

use earth as the sole equipment - grounding conductor 250.4(B)(4)

Enclosures for overcurrent protection devices must be mounted in a / an __________ position unless, that is shown to be impracticable . ( a ) horizontal ( b ) vertical ( c ) perspective ( d ) upright

vertical 240.33

The lead wires of heating cables are color coded for __________ identification> ( a ) lead ( b ) voltage ( c ) wire ( d ) cable

voltage 424.35

Cabinets or cut - out boxes installed in a wet location must be __________ . ( a ) weatherproof ( b ) water proof ( c ) raintight ( d ) watertight

weatherproof 312.2

A receptacle installed outdoors in a location protected from the weather or in other damp locations shall have an enclosure for the receptacle that is __________ when the receptacle is covered. ( a ) weatherproof ( b ) weathertight ( c ) rainproof ( d ) raintight

weatherproof 406.9(A)

Conduit installed underground or encased in concrete slabs that are in direct contact with the earth is considered a __________ location. ( a ) damp ( b ) wet ( c ) dry ( d ) moist

wet DEF 100

It is permissible to install two wires under the same terminal __________. ( a ) it is not permitted ( b ) only on branch circuits ( c ) only on relays mounted on switchboards per the Code ( d ) when the terminal is identified as allowing more than one conductor

when the terminal is identified as allowing more than one conductor 110.14(A)

MI cable is prohibited __________. ( a ) for residential branch circuits ( b ) where exposed to low temperature ( c ) where exposed to excessive moisture ( d ) where exposed to destructive corrosive conditions

where exposed to destructive corrosive conditions 332.12(2)

Liquid tight Flexible Metallic Conduit (LFMC) shall NOT be permitted __________. ( a ) in hazardous locations ( b ) where subject to physical damage ( c ) in exposed and concealed work ( d ) where installations requires flexibility or protection from liquids, vapors, or solids

where subject to physical damage 350.12

Listed non - metallic raceways are permitted for all of the following uses EXCEPT __________. ( a ) where subject to physical damage ( b ) in exposed work ( c ) where subject to corrosive vapors ( d ) in wet locations

where subject to physical damage 378.12(1)

EMT shall NOT be used __________ . ( a ) for exposed work ( b ) where subject to severe physical damage ( c ) for concealed work ( d ) none of these

where subject to severe physical damage 358.12(1)

The service disconnecting means shall plainly indicate __________ . ( a ) its voltage rating ( b ) the maximum horsepower rating ( c ) the maximum fuse size ( d ) whether it is in the open or closed position

whether it is in the open or closed position 230.77

Receptacles, polarized attachment plugs, and cord connectors for plugs and polarized plugs must have the terminal intended for connection to the grounded conductor identified. Identification must be by a metal or metal coating that is substantially __________ in color, or by the word white or the letter "W" located adjacent to the identified terminal. ( a ) white ( b ) gray ( c ) yellow ( d ) a or b

white 200.10(B)(1)

The grounded conductor of Type FC cable shall be identified throughout its length by means of a distinctive and durable __________ marking. ( a ) white or gray ( b ) black ( c ) blue ( d ) green

white or gray 322.120(B)

Where conductors of different systems are installed in the same raceway, one system shall have a neutral having an outer covering of a white or natural gray and each other system having a neutral shall have an outer covering of __________ . ( a ) white with green stripe ( b ) white or gray ( c ) blue ( d ) white with colored stripe ( other than green ) or distinguished by other suitable means

white with colored stripe ( other than green ) or distinguished by other suitable means 200.6(D)(2)

Ground - fault protection that functions to open the service disconnect __________ protect ( s ) service conductors or the service equipment on the line side. ( a ) adequately ( b ) completely ( c ) will ( d ) will not

wiil not 230.95(C) Informational Note 1

Circuit breakers shall be so located or shielded so that persons __________. ( a ) will NOT be burned or otherwise injured by their operation. ( b ) other than the authority cannot locate them ( c ) cannot operate them without a key ( d ) other than the authority cannot remove them

will NOT be burned or otherwise injured by their operation. 240.41(A)

When connections are made in the white wire in a multi - wire circuit at receptacles, they are required to be made __________. ( a ) connected to the silver terminal on the duplex ( b ) to the brass colored terminal ( c ) with a pigtail to the silver terminal ( d ) none of these

with a pigtail to the silver terminal 300.13(B)

When using the interior metal water piping system for the grounding electrode, the connection of the grounding electrode to the water piping system must be made __________. ( a ) in the garage or carport ( b ) in the basement or crawl space ( c ) at any accessible place near the panelboard ( d ) within the first five feet entering the building

within the first five feet entering the building 250.68(C)(1)

According to the National Electrical Code, __________ shall NOT be used to mount electrical equipment onto a masonry wall. ( a ) toggle bolts ( b ) wooden plugs ( c ) lead anchors ( d ) lag bolts

wooden plugs 110.13(A)

A single receptacle is a single contact device with no other contact device on the same __________ . ( a ) equipment ( b ) yoke ( c ) circuit ( d ) run

yoke DEF 100

Conductors in a non - jacketed multiconductor cable , such as ribbon cable in a permanent amusement attraction shall NOT be smaller than __________ AWG. ( a ) #22 ( b ) #24 ( c ) #26 ( d ) #30

#26 AWG 522.21(B)

Grounded conductors __________ and larger must be identified by a continuous white or gray outer finish along their entire length, by three continuous white stripes along their length, or by distinctive white or gray marking such as tape, paint, or other effective means at their terminations.. ( a ) #8 AWG ( b ) #6 AWG ( c ) #4 AWG ( d ) #2 AWG

#4 AWG 200.6(B)

Voltage drop on sensitive electronic equipment systems must NOT exceed __________ for branch - circuits. ( a ) 1.5% ( b ) 2.5% ( c ) 3% ( d ) 5%

1.5% 647.4(D)

A portable motor which has an attachment plug and receptacle may use this type of attachment as the controller provided the motor does NOT exceed __________ horsepower. ( a ) 1/8 ( b ) 1/3 ( c ) 1 ( d ) 3

1/3 HP 430.81(B)

For hallways of ____________________ ft. or more in length, it is required to have at least one receptacle outlet. ( a ) 6 ( b ) 8 ( c ) 10 ( d ) 12

10' 210.52(H)

When supplying a room air conditioner rated 120 volts, the length of the flexible supply cord must NOT exceed __________ . ( a ) 6' ( b ) 8' ( c ) 10' ( d )12'

10' 440.64

Electrical services and feeders shall be calculated on the basis of NOT less than __________ per electrified truck parking space . ( a ) 11 kVA ( b ) 12 kVA ( c ) 15 kVA ( d ) 21 kVA

11 kVA 626.11

What is the maximum cord - and - plug connected load permitted on a 15 amp receptacle that is supplied by a 20 amp circuit supplying multiple outlets? ( a ) 12 amps ( b ) 16 amps ( c ) 20 amps ( d ) 24 amps

12 amps 210.21(B)(2) • T. 210.21(B)(2)

Torque requirements for motor control circuit device terminals must be a minimum of __________ lbs -inch ( unless otherwise identified ) for screw - type pressure terminals used for # 14 and smaller cop per conductors . ( a ) 6 ( b ) 7 ( c ) 8 ( d ) 10

7 lbs - inch 430.9(C)

The ampacity for the supply conductors for a resistance welder with a duty cycle of 15% and a primary current of 21 amps is ___________ . ( a ) 9.45 A ( b ) 8.19 A ( c ) 11.2 A ( d ) 21 A

8.19A T. 630.31(A)(2)

Lock - out / tag - out is an important part of isolating electrical equipment to be worked on. Which of the following should be secured before lock - out is executed? ( a ) A copy of the OSHA regulations for each person involved. ( b ) A supplemental list that shows all involved energy sources and energy isolating devices. ( c ) Knowledge that each person involved in the task is in control of all energy sources. ( d ) Both ( b ) and ( c )

Both ( b ) and ( c ) NFPA 70E

What is the standard abbreviation for power on an electrical diagram? ( a ) PAR ( b ) PB ( c ) PF ( d ) PWR

PWR General Knowledge

Which of the following is a FALSE statement? ( a ) Where a building is supplied by more than one service, a permanent plaque or directory shall be installed at each service disconnect denoting the location of all other services. ( b ) Service conductors supplying a building are permitted to pass through the interior of another building. ( c ) Conductors other than service conductors shall NOT be installed in the same service. ( d ) Conductors run above the top level of a window shall be permitted to be less than 3 feet away from a window that is designed to be opened.

Service conductors supplying a building are permitted to pass through the interior of another building. 230.3

The parallel conductors in each phase or grounded conductor must __________ . ( a ) be terminated in the same manner ( b ) be the same length and conductor material ( c ) have the same cma and insulation type ( d ) all of these

all of these 310.10(G)(2)

For cord - connected equipment such as __________ , a separable connector or an attachment plug and receptacle is permitted to serve as the disconnecting means. ( a ) drinking water coolers and beverage dispensers ( b ) room air conditioners ( c ) household refrigerators and freezers ( d ) all of these

all of these 440.13

Provisions shall be made for sufficient diffusion and ventilation of the gases from the storage battery if present to prevent the accumulation of a / ( n ) __________ mixture. ( a ) explosive ( b ) corrosive ( c ) toxic ( d ) all of these

explosive 480.10(A)

Four devices are connected in one circuit. The current through each of the devices is one - fourth of the circuit current. What kind of circuit connects the devices. ( a ) short circuit ( b ) parallel circuit ( c ) series circuit ( d ) open circuit

parallel circuit General Knowledge

Most incidents and injuries are initiated by __________ . ( a ) equipment failures ( b ) people ( c ) incomplete procedures ( d ) inadequate regulation enforcement

people NFPA 70E

The localization of an overcurrent condition to restrict outages to the circuit or equipment affected , accomplished by the choice of overcurrent protective devices is called __________. ( a ) arc - fault interrupter ( b ) overload protection ( c ) selective coordination ( d ) none of these

selective coordination DEF 100

The conductor insulation of Type MI cable must be a highly - compressed refractory mineral that will provide proper __________ for all conductors. ( a ) resistance ( b ) ohmic value ( c ) dielectric ( d ) spacing

spacing 332.112

The motor branch - circuit short - circuit and ground - fault protective device shall be capable of carrying the __________ current of the motor. ( a ) starting ( b ) in - rush ( c ) running ( d ) overload

starting 430.52(B)

When an ungrounded metal water - piping system is used as a grounding electrode, effective bonding must be provided around insulated joints and around any equipment that is likely to be disconnected for repairs or replacement. Bonding conductors must be of __________ to permit removal of such equipment while retaining the integrity of the bond. ( a ) cu / AL wire ( b ) stranded wire ( c ) flexible conduit ( d ) sufficient length

sufficient length 250.68(B)

In determining the dimensions addressing luminaires, the distance to be measured shall be __________ and imaginary cord connected to the luminaire would follow without piercing a floor, wall, ceiling, doorway with hinged or sliding door, window opening, or other effective permanent barrier. ( a ) the shortest path ( b ) at least 12' ( c ) at least 16' ( d ) 20'

the shortest path 680.22(B)(8)

Straight runs of 1" RMC using threaded couplings may be secured at intervals NOT exceeding __________ . ( a ) 6' ( b ) 10' ( c ) 12' ( d ) 14'

12' 344.30(B)(2) • T. 344.30(B)(2)

210.8(C) GFCI protection shall be provided for lighting outlets NOT exceeding _________ volts installed in crawl spaces ( a ) 30 ( b ) 50 ( c ) 90 ( d ) 120

120V 210.8(C)

Potential transformers, and other switchboard devices with potential coils shall be supplied by a circuit that is protected by standard overcurrent devices __________ amperes or less. ( a ) 15 ( b ) 20 ( c ) 25 ( d ) 30

15 408.52

The minimum size box that is to contain a flush device must NOT be less than __________ deep. ( a ) 3/4" ( b ) 15/16" ( c ) 1" ( d ) 1 1/2"

15 / 16" 314.24(B)(5)

The building disconnecting means for a one - circuit installation that supplies only limited loads of a single branch - circuit must have a rating NOT less than __________ . ( a ) 15 amps ( b ) 20 amps ( c ) 25 amps ( d ) 30 amps

15 amps 225.39(A)

Circuits and equipment operating at less than 50 volts must use receptacles that are rated at NOT less than __________ amps . (a ) 15 ( b ) 20 ( c ) 25 ( d ) none of these

15 amps 720.6

The continuous current - carrying capacity of a 1 1/2 square inch copper busbar mounted in an unventilated enclosure is __________ amps. ( a ) 500 ( b ) 650 ( c ) 750 ( d ) 1500

1500 amps 366.23(A)

Armored cable installed in thermal insulation shall have conductors rated at __________. The ampacity of the cable installed in these applications shall NOT exceed that of a 60°C-rated conductor. ( a ) 60°C ( b ) 194°F ( c ) 75°C ( d ) 90°F

194°F 320.80(A)

DC microgrid systems used as a source of power for emergency systems shall be of suitable rating and capacity to supply and maintain the total emergency load for NOT less than __________hours of full - demand operation. ( a ) 2 hours ( b ) 3 hours ( c ) 3 1/2 hours ( d ) 4 hours

2 hours 700.12(H)

Outdoor antennas and lead in conductors for radio and TV equipment must NOT cross over open conductors of electric light or power circuits, and must be kept well away from all such circuits to avoid the possibility of accidental contact. Where proximity to open electric light or power service conductors of less than 250 volts between conductors cannot be avoided, the installation must provide a clearance of at least __________ .

24" 810.13

For installations consisting of NOT more than two 2 - wire branch circuits , the building disconnecting means must have a rating of NOT less than __________ amps. ( a ) 15 ( b ) 20 ( c ) 25 ( d ) 30

30 amps 225.39(B)

A nursing home is an area for the lodging, boarding, and nursing care, on a 24 - hour basis, of __________ or more patients. ( a ) 4 ( b ) 20 ( c ) 50 ( d ) 100

4 or more 517.2 (DEF)

All audio equipment operating at greater than the low - voltage contact limit and located within __________ from the inside walls of a storable or portable immersion pool shall be grounded and shall be protected by a GFCI. ( a ) 6 ' ( b ) 8 ' ( c ) 10 ' ( d ) 12 '

6' 680.35(D)

Equipment grounding conductors must be the same size as the circuit conductors for __________ amp circuit. ( a ) 30 ( b ) 20 ( c ) 15 ( d ) all of these

all of these T. 250.122

A / an __________ switch allows a worker to set a circuit breaker trip unity to "no intentional delay" to reduce the clearing time while the worker is working within the arc flash boundary. ( a ) safety ( b ) release action ( c ) double break ( d ) energy - reducing maintenance

energy - reducing maintenance 240.87 Informational Note

Service and feeder conductors may be sized using Table 310.12 for __________ . ( a ) commercial services only ( b ) only multi-family dwelling services ( c ) any service under 400 amps ( d ) only 120 / 240V, 3 - wire services for single dwelling unit

only 120 / 240 volt, 3 - wire services for single dwelling unit T. 310.12