NEC 2017
The minimum working space on a circuit that is 120 volts to ground, with exposed live parts on one side and no live or grounded parts on the other side of the working space, is _______ ft. Select one: a. 1 b. 3 c. 4 d. 6
The correct answer is: 3 Subject : Working spaceIndex : About electrical equipment,
A 190 ft long, 120 volt branch circuit with a 18 amp load must be installed so as to not exceed a 3% voltage drop. What size THWN copper conductor with 75° terminations must be used? The K factor is 12.9. Select one: a. 6 AWG b. 8 AWG c. 10 AWG d. 1/0 AWG
2 x 12.9 x 18 x 190 = 24,510 Chapter 9 Table 8 #6 AWG conductor 26,240 cmil3.6 The correct answer is: 6 AWG
Equipment enclosures on ______ must be located so as not to interfere with mooring lines. Select one: a. cars b. trucks c. panels d. piers
The correct answer is: piers Subject : Marinas and boatyards Index : Enclosures2017 NEC 555.10(B)
According to CAL/OSHA which of the following would be considered a "confined space?" Select one: a. roof b. platform c. trench d. swimming pool
The correct answer is: trench
Receptacles installed in a dwelling unit kitchen to serve countertop surfaces shall be supplied by not fewer than _____ small-appliance branch circuits. Select one: a. one b. two c. three d. four
The correct answer is: two Subject : DwellingsIndex : ReceptaclesSub Index: Outlets2017 NEC 210.52
A toaster is listed as 1560 W. When it is plugged into a 120 V circuit and starts to make toast, how many amperes will it draw? Select one: a. 1,440 b. 1,680 c. 13 d. 187,200
The correct answer is: 13 1560 W / 120 V = 13 A
A series circuit has two resistors. The resistors dissipate 10 W and 15 W. What is the total power dissipation of the circuit? Select one: a. 10 W b. 5 W c. 25 W d. 15 W
The correct answer is: 25 W
Type UF cable used with a 24V landscape lighting system can have a minimum cover of ____. Select one: a. 6 in. b. 12 in. c. 18 in. d. 24 in.
The correct answer is: 6 in. Subject : Underground wiringIndex : minimum cover requirementsORSubject : CablesIndex : Underground
Surface-mounted fluorescent luminaires in clothes closets shall be permitted on the wall above the door, or on the ceiling, provided there is a minimum clearance of _______ between the luminaire and the nearest point of a closet storage space. Select one: a. 3 in. b. 6 in. c. 9 in. d. 12 in.
The correct answer is: 6 in. Subject : Luminaires Index : Clothes closets OR Subject : Flourescent luminaires Index : Surface mounted or recessed OR Subject : Clothes closets Index : Luminaires
The ampacity of 18 TFFN is __________. Select one: a. 6A b. 8A c. 10A d. 14A
The correct answer is: 6A Subject : Fixture wires Index : Ampacities
A series circuit is a circuit that has only one path for _____ flow. Select one: a. voltage b. current c. power d. resistance
The correct answer is: current
HPD cord shall be permitted for _________. Select one: a. not hard usage b. hard usage c. extra-hard usage d. all of these
The correct answer is: not hard usage Subject : Cords,Index : FlexibleSub Index : Types
A 3-conductor SJE cable (one conductor is used for grounding) has a maximum ampacity of ________ for each 16 AWG conductor. Select one: a. 9A b. 11A c. 13A d. 15A
The correct answer is: 13A Subject : CordsIndex : FlexibleSub- Index : ampacities
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 conductors with an ampacity of ________ or less. Select one: a. 30 A b. 55 A c. 60 A d. 100 A
The correct answer is: 55 A Subject : LoadsIndex : Feeders, calculations for2017 NEC 215.2(A)(3)
How many chapters are there in the NEC? Select one: a. 6 b. 8 c. 9 d. NEC doesn't have chapters
The correct answer is: 9
When sizing a feeder for the fixed appliance loads in dwelling units, a demand factor of 75 percent of the total nameplate ratings can be applied if there are _______ or more appliances fastened in place on the same feeder. Select one: a. two b. three c. four d. five
The correct answer is: four Subject : AppliancesIndex : Load calculations2017 NEC 220.53
Central heating equipment, other than fixed electric space-heating equipment, shall be supplied by a(n) _______ branch circuit. Select one: a. multiwire b. individual c. multipurpose d. small-appliance
The correct answer is: individual Subject : Heating equipment Index : Central
A two-branch parallel circuit has a 30 Ohms and a 15 Ohms resistor. What is the total resistance? Select one: a. 2 Ohms b. 10 Ohms c. 45 Ohms d. 15 Ohms
The correct answer is: 10 Ohms
A switchboard or panelboard containing a 4-wire, ________ system where the midpoint of one phase winding is grounded, shall be legibly and permanently field-marked to caution that one phase has a higher voltage-to-ground. Select one: a. wye-connected b. delta-connected c. solidly grounded d. ungrounded
The correct answer is: delta-connected Subject : Identification Index : Switchboards and panelboards OR Subject : Switchboards Index : Support, busbars, conductors
A ________ shall be located in sight from the motor locations and the driven machinery location. Select one: a. controller b. protection device c. disconnecting means d. all of these
The correct answer is: disconnecting means Subject : Motors Index : Disconnecting means OR Subject : Disconnecting means Index : Motors
A ____ conductor that carries only the unbalanced current from other conductors of the same circuit shall not be required to be counted when applying the provisions of 310.15(B)(3)(a).
The correct answer is: neutral Subject : NeutralIndex : Conductor
A series circuit has a total resistance of 180 Ohms and an applied voltage of 120 V. What is the current flow? Select one: a. 300 A b. 1.5 A c. 60 A d. 0.667 A
The correct answer is: 0.667 A
The two resistors in a series circuit have voltages of 25 V and 60 V. The applied voltage is _____. Select one: a. 35 V b. 85 V c. 25 V d. 60 V
The correct answer is: 85 V
Fixture wires are used to connect luminaires to the _______ conductors supplying the luminaires. Select one: a. service b. branch-circuit c. feeder d. none of these
The correct answer is: branch-circuit Subject : Fixture wires, Index : Uses permitted
Conductor sizes are expressed in American Wire Gage (AWG) or _______. Select one: a. inches b. circular mils c. square inches d. none of these
The correct answer is: circular mils Subject : ConductorIndex : sizesNEC 2017 110.6
The disconnecting means for a motor controller shall be designed so that it does not __________ automatically. Select one: a. open b. close c. restart d. shut down
The correct answer is: close .Subject : Motors Index : Disconnecting means (References 430 - IX, Which is as close as you get.)
Circuits that have more than one path for current flow are _____ circuits. Select one: a. parallel b. series c. combination d. short
The correct answer is: parallel
In a parallel circuit, the total resistance is _____ value resistance. Select one: a. larger than the smallest b. smaller than the smallest c. equal to the largest d. equal to the smallest
The correct answer is: smaller than the smallest
The motor branch-circuit short-circuit and ground-fault protective device shall be capable of carrying the _______ current of the motor. Select one: a. varying b. starting c. running d. continuous
The correct answer is: starting Subject : Motors Index : Branch Circuits Sub Index : Short-circuit and ground-fault protection OR Subject : Branch Circuit Index : Individual Sub Index : Rating or setting
What method is recognized as the easiest and most reliable way to look up NEC code articles? Select one: a. table of contents b. hunt and peck c. randomization d. subject indexing
The correct answer is: subject indexing
In a series circuit with two resistors, the total resistance is equal to the _____ of the two resistors. Select one: a. difference b. product over the sum c. sum d. quotient
The correct answer is: sum
All 15A and 20A, 125V receptacles installed in _____ of dwelling units shall have GFCI protection. Select one: a. unfinished attics b. finished attics c. unfinished basements d. finished basements
The correct answer is: unfinished basements Subject: Ground fault circuit interruptersIndex: ReceptalcesSub Index: Required2017 NEC 210.8
A 420 ft long, 288 volt 3 phase, branch circuit with a 34 amp load must be installed so as to not exceed a 4% voltage drop. What size THWN copper conductor with 75° terminations must be used? The K factor is 12.9. Select one: a. 8 AWG b. 6 AWG c. 4 AWG d. 2 AWG
1.73 x 12.9 x 34 x 420 = 27,663.78 Chapter 9 Table 8 #4 AWG con. 41,740 cmil11.52 The correct answer is: 4 AWG
The emergency controls for attended self-service stations shall be located no more than ____ from motor fuel dispensers. Select one: a. 20 ft b. 50 ft c. 75 ft d. 100 ft
The correct answer is: 100 ft Subject : Gasoline dispensing and service stations, see Motor fuel dispensingfacilities Index : Circuit disconnects
The mobile home park secondary electrical distribution system to mobile home lots shall be __________. Select one: a. 120/208V, single-phase b. 120/240V, single-phase c. A or B d. none of these
The correct answer is: 120/240V, single-phase Subject : Mobile home parks Index : Distribution system2017 NEC 550.30
Branch-circuit conductors supplying a single a/c motor-compressor shall have an ampacity not less than ______ percent of either the motor-compressor rated-load current or the branch-circuit selection current, whichever is greater. Select one: a. 100 b. 125 c. 150 d. 200
The correct answer is: 125 Subject : Air-conditioning and refrigerating equipment Index : Branch circuit Sub Index : Conductors, single motor compressor
The primary overcurrent protection for a transformer rated 1000V, nominal, or less, having a primary current rating of over 9A or more must be set at not more than ________ percent. Select one: a. 125 b. 167 c. 200 d. 300
The correct answer is: 125 Subject : Transformers Index : Overcurrent protection OR Subject : Overcurrent protection Index : Transformers
Overcurrent protection for the secondary of a transformer rated 1000V or less having a primary current rating of 9A or more must be set at not more than _______ percent of the secondary current. Select one: a. 100 b. 125 c. 150 d. 170
The correct answer is: 125 Subject : Transformers Index : Overcurrent protection OR Subject : Overcurrent protection Index : Transformers
A Class III, Division ____ location is where easily ignitable fibers/flyings are stored or handled but not manufactured. Select one: a. 1 b. 2 c. 3 d. all of these
The correct answer is: 2 Subject : Hazardous (classified) locations, Class III Index : N/A
Indoor antenna and lead-in conductors for radio and television receiving equipment shall be separated by at least _____ from conductors of any electric power or Class 1 circuit conductors, unless otherwise permitted. Select one: a. 2 in. b. 12 in. c. 18 in. d. 6 ft
The correct answer is: 2 in. Subject : Clearences Index : Antennas2017 NEC 810.18(B) (Takes you to 810.18)
A working space not less than 3 ft high by 3 ft wide by _______ deep is required for each ballast, transformer, and electronic power supply where not installed in a sign. Select one: a. 2 ft b. 3 ft c. 4 ft d. 6 ft
The correct answer is: 3 ft Subject : Signs Index : Electric Sub Index : Ballasts, transformers, and electronic power supplies OR Subject : Access and working space Index : Transformers, electric sign
A ladder is used to reach the top of a building 16 ft. tall. What distance should the bottom of the ladder be placed from the side of the building? Select one: a. 3 feet b. 4 feet c. 6 feet d. 10 fe
The correct answer is: 4 feet
All electric pool water heaters shall have heating elements not exceeding _____. Select one: a. 20A b. 35A c. 48A d. 60A
The correct answer is: 48A Subject : Swimming pools, fountains, and similar installations Index : Heaters and heating equipment Sub Index : Pool water heaters
Audio system equipment supplied by branch-circuit power shall not be located within ______ of the inside wall of a pool, spa, hot tub, fountain, or tidal high-water mark. Select one: a. 18 in. b. 2 ft c. 5 ft d. 10 ft
The correct answer is: 5 ft. Subject : Audio signal processing, amplification, and reproduction equipment Index : Water, near OR Subject : Branch circuit Index : Audio equipment
The minimum thickness of sealing compound in a Class I location shall not be less than the trade size of the sealing fitting; however, in no case shall the thickness be less than _____ Select one: a. 1/8 in. b. 1/4 in. c. 3/8 in. d. 5/8 in.
The correct answer is: 5/8 in. Subject : Hazardous (classified) locations, Class I Index : Sealing, OR Subject : Sealing Index : Conduit systems
While troubleshooting with capacitors on circuits under 1000 volts, the residual voltage of a capacitor shall be reduced to how many volts, nominal, or less within 1 minute after the capacitor is disconnected from the source? Select one: a. 60 b. 50 c. 70 d. 20
The correct answer is: 50
Each portable structure at a carnival, circus, or fair shall be provided with a disconnect switch within sight of and within _____ of the operator's station. Select one: a. 3 ft b. 6 ft c. 8 ft d. 10 ft
The correct answer is: 6 ft Subject : Carnivals, circuses, fairs, and similar events Index : Wiring methodsSub Index: Concessionsor Rides or Tents2017 NEC 525.21(A)
Overhead coaxial cables for a CATV system shall be separated by at least ____ from lightning conductors, where practicable. Select one: a. 3 in. b. 6 in. c. 2 ft d. 6 ft
The correct answer is: 6 ft Subject : Community antenna television and radio distribution (CATV) systems Index : Cables Sub Index : Aerial entrance OR Subject : Aerial cables Index : Community antenna television and radio distribution OR Subject : Clearances Index : Community antenna systems OR Subject : Conductors Index : Lightning rods, spacing from2017 NEC 820.44(E)(3)
CATV coaxial cable can deliver power to equipment that is directly associated with the radio frequency distribution system if voltage is not over _____ volts and if the current supply is from a transformer or other power-limiting device. Select one: a. 60 b. 120 c. 180 d. 270
The correct answer is: 60 Subject : Community antenna television and radio distribution (CATV) systems Index : Energy limitations2017 NEC 820.15
An attachment plug and receptacle can serve as the disconnecting means for a single-phase room air conditioner rated 250 volts or less if _________. Select one: a. the manual controls on the room air conditioner are readily accessible and located within 6 ft of the floor b. an approved manually operable disconnecting means is installed in a readily accessible location within sight from the room air conditioner c. A or B d. A and B
The correct answer is: A or B Subject : Air conditioners, room Index : Disconnecting means OR Subject : Disconnecting means Index : Receptacles, cord connectors and attachment plugs OR Subject : Accessible Index : Air-conditioning and refrigeration disconnects
Class 2 and Class 3 plenum cables listed as suitable for use in other spaces used for environmental air shall be Type(s) ____. Select one: a. CL2P and CL3P b. CL2R and CL3R c. CL2 and CL3 d. PLTC
The correct answer is: CL2P and CL3P Class 1, 2, and 3 circuits, see Remote-control, signaling, and power-limited circuits Subject : Remote-control, signaling, and power-limitedcircuits Index : Class 2 and Class 3 circuits Sub Index: Listing (Takes you to 725 IV)Marking (Takes you to 725.179)
Locations in which combustible dust is in the air under normal operating conditions in quantities sufficient to produce explosive or ignitable mixtures are classified as ___. Select one: a. Class I, Division 2 b. Class II, Division 1 c. Class II, Division 2 d. Class III, Division 1
The correct answer is: Class II, Division 1 Subject : Hazardous (classified) locations, Class II Index : N/A
Voltage should always be tested: Select one: a. From a known hot wire to the load b. From a known hot wire to a ground source c. Do not test for voltage. Read the label instead d. On series with the lamp
The correct answer is: From a known hot wire to a ground source
The branch circuit supplying submersible fountain equipment shall be ____, unless the equipment is listed for operation at not more than 15V. Select one: a. 240V b. GFCI protected c. a and b d. none of these
The correct answer is: GFCI protected Subject : Submersible equipment Index : None OR Subject : Swimming pools, fountains, and similar installations Index : Ground-fault circuit interrupters Sub Index : Fountains
Which statement is not true about a true RMS meter? Select one: a. It is a more expensive type meter. b. It gives an instantaneous reading c. It takes an average over several cycles to get an accurate reading d. It usually shows a larger value than a conventional meter.
The correct answer is: It gives an instantaneous reading
Optical fiber cables listed as suitable for general-purpose use, with the exception of risers, plenums, and other spaces used for environmental air are Types ____. Select one: a. OFNP and OFCP b. OFNR and OFCR c. OFNG and OFCG d. OFN and OFC
The correct answer is: OFN and OFC Subject : Optical fiber cables Index : Marking Table2017 NEC 770.179(D)
Parking garages used for parking or storage can be considered as an unclassified location. Select one: a. True b. False
The correct answer is: True Subject : Garages, commercial Index : Classification of locations
Interconnecting cables under raised floors that support information technology equipment shall be _________. Select one: a. Type RF b. Type UF c. Type LS d. Type DP
The correct answer is: Type DP Subject : Information technology equipment Index : Supply circuits and interconnecting cables
Always check, when using a non-contact type voltage tester that: Select one: a. You're holding right side up. b. It's the right color for the voltage being checked. c. You have just checked it on a known energized circuit. d. You are not grounded.
The correct answer is: You have just checked it on a known energized circuit.
Article 514 applies to ___ and fleet vehicle motor fuel dispensing facilities. Select one: a. motor fuel dispensing facilities b. marine fuel dispensing facilities c. commercial gas stations for motor vehicles only d. a and b
The correct answer is: a and b Code stated
The electric motors, controllers, and wiring for an electrically operated pool cover shall be ____. Select one: a. located at least 5 ft from the inside wall of the pool b. separated from the pool by a permanent barrier c. a and b d. a or b
The correct answer is: a or b Subject : Controllers Index : Electrically operated pool covers OR Subject : Covers Index : Pool cover, electrically operated OR Subject : Swimming pools, fountains, and similar installations Index : Ground-fault circuit interrupters Sub Index : Pool covers
It was observed when troubleshooting a multiwire branch circuit that the grounded conductor had come loose where attached to a receptacle and had interrupted the circuit's continuity at the first junction box. After de-energizing the circuit, what is the proper method to safely restore the circuit to proper working order? Select one: a. a. replace the breaker then re-attach the grounded conductors b. a. re-attach the grounded conductor to the receptacle c. a. replace the receptacle and re-attach the grounded conductors d. a. pigtail all grounded conductors to ensure continuity
The correct answer is: a. pigtail all grounded conductors to ensure continuity
A legally required standby system shall have adequate capacity and rating for ____ that are expected to operate simultaneously on the standby system. Select one: a. all of the loads b. 80 percent of the loads c. 125 percent of the loads d. none of these
The correct answer is: all of the loads Subject : Legally required standby systems Index : Capacity and rating
Amplifiers, loudspeakers, and other equipment shall be located or protected so as to guard against environmental exposure or physical damage that might cause ________. Select one: a. a fire b. shock c. personal hazard d. all of these
The correct answer is: all of these Subject : Audio signal processing, amplification, and reproduction equipment Index : Protection of electrical equipment
Hazardous locations shall be classified depending on the properties of the ____ that may be present, and the likelihood that a flammable or combustible concentration or quantity is present. Select one: a. flammable liquid produced vapors b. flammable gases c. combustible dusts d. all of these
The correct answer is: all of these Subject : Hazardous Atmospheres Index : Class I, II, or IIIThis gets you close(500.5(B,C,D)
What type of electrical test meter must be connected in series in a circuit? Select one: a. voltmeter b. ampmeter c. wattmeter d. ohmmeter
The correct answer is: ampmeter
Communications cables shall be separated by at least 2 in. from conductors of _____ circuits, unless permitted otherwise. Select one: a. power b. lighting c. Class 1 d. any of these
The correct answer is: any of these Subject : Communications circuits Index : Raceways2017 NEC 800.133(A)(2)
In commercial garage, GFCI protection shall be provided on all 15A and 20A, 125V receptacles installed where ____ is (are) to be used. Select one: a. electrical diagnostic equipment b. electrical hand tools c. portable lighting equipment d. any of these
The correct answer is: any of these Subject : Garages, commercial Index : Ground-fault circuit-interrupter protection OR Subject : Ground-fault circuit-interrupter Index : Garages, commercial
In Class II locations, dust must be prevented from entering the required dust-ignition-proof enclosure from a raceway by one of the following methods: Select one: a. a permanent effective seal b. a horizontal raceway not less than 10 ft long c. a vertical raceway than extends downward for not less than 5 ft d. any of these
The correct answer is: any of these Subject : Hazardous (classified) locations, Class II Index : Sealing OR Subject : Sealing Index : Conduit systems
The disconnecting means for an elevator or escalator shall be an enclosed externally operable circuit breaker or fused motor-circuit switch capable of ________. Select one: a. interrupting six times the locked-rotor current b. being locked in the open position c. including overload protection d. serving as a transfer switch
The correct answer is: being locked in the open position Subject : Elevators, dumbwaiters, escalators, moving walks, platform lifts, and stairway chairlifts Index : Disconnecting means and control OR Subject : Disconnecting means Index : Elevators
A combination circuit is a circuit that contains _________. Select one: a. only series components b. only parallel components c. both series and parallel components d. both voltage and current sources
The correct answer is: both series and parallel components
If someone is seriously injured on the job your first response should be to Select one: a. give CPR b. make them comfortable c. call employer d. call 911 or a nearby medical center
The correct answer is: call 911 or a nearby medical center
The _____ is the same at any point in a series circuit. Select one: a. power b. voltage c. resistance d. current
The correct answer is: current
A manufactured wiring system is a system assembled by a manufacturer, which cannot be inspected at the building site without _________. Select one: a. a permit b. a manufacturer's representative permit c. damage to or destruction of the assembly d. an engineer's supervision
The correct answer is: damage to or destruction of the assembly Subject : Manufactured wiring systems Index : Definition
Nonconductive optical fiber cable contains no metallic members and no other _____ materials. Select one: a. electrically conductive b. inductive c. synthetic d. insulatin
The correct answer is: electrically conductive Subject : Optical fiber cables Index : Definitionor : Nonconductive Cable Sub Section: Definition
In emergency standby power systems, only appliances and lamps required for emergency use shall be supplied by _____. Select one: a. emergency circuits b. multiwire branch circuits c. HID-rated circuit breakers d. a and b
The correct answer is: emergency circuits Subject : Branch Circuits Index : Emergency systems OR Subject : Emergency systems Index : Circuits for lighting and power (Takes you to general area 700 IV)
CAL/OSHA states that live parts of electrical equipment must be Select one: a. prohibited b. enclosed or barricaded c. left out of work areas d. authorized by employer
The correct answer is: enclosed or barricaded
In Class III locations, receptacles and attachment plugs shall be of the grounding type, shall be designed so as to minimize the accumulation or the entry of ____, and shall prevent the escape of sparks or molten particles. Select one: a. gases or vapors b. particles of combustion c. fibers/flyings d. none of these
The correct answer is: fibers/flyings Subject : Hazardous (classified) locations, Class III Index : Receptacles and attachment plugs OR Subject : Receptacles, cord connectors, and attachment plugs Index : Hazardous (classified) locations
In assembly occupancies, Type NM cable, AC cable, ENT, and PVC conduit can be installed in those portions of the building not required to be of ______ construction by the applicable building code. Select one: a. Class 1, Division 1 b. fire-rated c. occupancy-rated d. above ground
The correct answer is: fire-rated Subject : Assembly, places of Index : Wiring methods2017 NEC 518.4(B)
Class I, Division 1 locations are those in which ignitable concentrations of _____ can exist under normal operating conditions. Select one: a. combustible dust b. easily ignitable fibers or flyings c. flammable gases or flammable liquid-produced vapors d. pyrotechnics
The correct answer is: flammable gases or flammable liquid-produced vapors Subject : Hazardous (classified) locations, Class I Index : N/A OR Subject : Hazardous atmosphere Index : Class I locations
An Ambulatory Health Care Occupancy is a building or portion of a building used for the housing and nursing care, on a 24-hour basis, of ____ or more persons who, because of mental or physical incapacity, might be unable to provide for their own needs and safety without the assistance of another person. Select one: a. two b. three c. four d. five
The correct answer is: four Subject : Ambulatory Health Care Occupancy Index : Definition2017 NEC 517.2 Nursing Home
Metal equipment racks and enclosures for permanent audio system installations shall be ________. Select one: a. ungrounded b. grounded c. isolated d. neutral
The correct answer is: grounded Subject : Audio signal processing, amplification, and reproduction equipment Index : Wiring of equipment racks
NFPA 70E states that energized work is permitted where an employer can demonstrate that de-energizing introduces additional: Select one: a. hazards or increased risk b. costs c. resources d. inspections
The correct answer is: hazards or increased risk
Equipment that is sealed against the entrance of an external atmosphere where the seal is made by fusion is called_____________. Select one: a. vapor proof b. hermetically sealed c. weathertight d. all of these
The correct answer is: hermetically sealed Subject : Hermetically sealed Index : Definition
While troubleshooting a 15 amp 120 volt multi-wire circuit, you have determined that the neutral has 21 amps of current passing through it. Further tests show that one ungrounded conductor has an 8 amp load and the other ungrounded conductor has a 13 amp load. What is wrong with the multi-wire circuit? Select one: a. short circuit b. improper phasing c. neutral conductor is not connected properly d. neutral conductor is shorted
The correct answer is: improper phasing
Which part of your body should do most of the work, when lifting? Select one: a. back b. legs c. shoulders d. feet
The correct answer is: legs
Power-limited fire alarm cables installed within buildings shall be ____ as being resistant to the spread of fire. Select one: a. marked FR b. listed c. identified d. color-coded
The correct answer is: listed Subject : Fire alarm systems Index : Power-limited circuits Sub Index : Cable markings or : Listing or : Marking
Electrical service equipment at carnivals and circuses shall not be accessible to unqualified persons, unless it is ____. Select one: a. lockable b. readily accessible c. accessible d. none of these
The correct answer is: lockable Subject : Carnivals, circuses, fairs, and similar events Index : Power sourcesSub Index : Services2017 NEC 525.10(A)
Where the disconnecting means is out of the line of sight from any section of the sign or outline lighting able to be energized, the disconnecting means must be capable of being _______ in the open position. Select one: a. secured b. bolted c. locked d. none of these
The correct answer is: locked Subject : Signs Index : Electric Sub Index : Disconnects OR Subject : Disconnecting means Index : Signs and outline lighting OR Subject : Insight from Index : Signs
None of a 10 year old dwelling's 240 volt appliances are functioning and nearly half of the receptacle circuits are not energized. What is the most probable cause? Select one: a. transient voltage b. faulty wiring c. main breaker failure d. circuit imbalance
The correct answer is: main breaker failure
A piece of equipment used to measure the ohms to ground for installing the required grounding electrodes is called? Select one: a. Ground potential checkometer b. megger c. ground fault meter d. Digital Multi-meter
The correct answer is: megger
All of the following are considered a direct short, except for _____. Select one: a. line-to-line fault b. phase-to-phase fault c. neutral-to-ground fault d. phase-to-neutral fault
The correct answer is: neutral-to-ground fault
Resistance is measured with a(n) _______. Select one: a. ammeter b. ohmmeter c. voltmeter d. wattmeter
The correct answer is: ohmmeter
The type of meter that must NEVER be connected to a circuit when the circuit has power is the __________. Select one: a. ammeter b. voltmeter c. ohmmeter d. wattmeter
The correct answer is: ohmmeter
During the solving of a combination circuit, it is necessary to simplify a parallel block to _____. Select one: a. two series resistors b. one series resistor c. one parallel resistor d. two parallel resistors
The correct answer is: one series resistor
A simple parallel circuit is a circuit that contains ______. Select one: a. only series components b. only parallel components c. both series and parallel components d. both voltage and current sources
The correct answer is: only parallel components
Within 8 to 15 minutes after resetting it, a 20 amp circuit repeatedly trips its breaker. What is the most probable cause of the tripping breaker? Select one: a. ground fault b. short circuit c. arc fault d. overloaded circuit
The correct answer is: overloaded circuit
Audio system circuits using Class 2 or Class 3 wiring methods shall not be installed in the same cable or raceway with ____. Select one: a. other audio system circuits b. power-limited fire alarm conductors or cables c. a or b d. none of these
The correct answer is: power-limited fire alarm conductors or cables Subject : Fire alarm systems Index : Power limited Sub index : Installation OR Subject : Enclosures Index : Fire Alarm Ciruits and Conductors
NFPA 70E states that, a person who is trained and knowledgeable of the construction and operation of equipment or a specific work method who is trained to recognize and avoid the electrical hazards that might be present with respect to that equipment or work method is a Select one: a. competent person b. journeyman electrician c. qualified person d. certified electrician
The correct answer is: qualified person
One of the steps that occurs frequently during combination circuit solutions is _____ the circuit into a simpler circuit. Select one: a. redrawing b. enlarging c. expanding d. copying
The correct answer is: redrawing
Solving combination circuits includes a step in which you _____ the circuit to a simpler circuit. Select one: a. enlarge b. complicate c. expand d. reduce
The correct answer is: reduce
A house built in 1954 with a history of electrical issues has a main electrical panel that is Federal Pacific. What should an electrician do to correct the situation? Select one: a. replace the breakers b. replace the panel c. clean the bus bars d. replace the bus bars
The correct answer is: replace the panel
A legally required standby system is intended to automatically supply power to ____ in the event of failure of the normal source. Select one: a. those systems classed as emergency standby power systems b. selected loads c. a and b d. none of these
The correct answer is: selected loads Subject : Legally required standby systems Index : Definition
Flexible cords used in Class II, Division 1 or 2 locations ____. Select one: a. shall be listed for hard usage b. shall be listed for extra-hard usage c. shall not be permitted d. none of these
The correct answer is: shall be listed for extra-hard usage Subject : Hazardous (classified) locations, Class II Index : Flexible cords
What technique should be used for lifting? Select one: a. doesn't matter b. bent back/bent knees c. bent back/straight knees d. straight back/bent knees
The correct answer is: straight back/bent knees
Wiring from an emergency source can supply any combination of emergency, legally required, or optional loads, provided the conductors _____. Select one: a. terminate in separate vertical sections of a switchboard b. terminate in the same vertical section of a switchboard c. terminate in a junction box identified for emergency use d. are identified as emergency conductors
The correct answer is: terminate in separate vertical sections of a switchboard Subject : Emergency systems Index : Circuit wiring OR Subject : Emergency Systems Index : Wiring
Who is responsible to provide safe access to and from all work levels? Select one: a. the employer b. the superintendent c. the foreman d. the worker
The correct answer is: the employer
An arc-fault breaker immediately trips, but only after applying any load to the circuit. What is the most probable cause? Select one: a. the ground is loose b. the equipment grounding conductor is touching the grounded conductor c. there is an arc-fault d. short circuit
The correct answer is: the equipment grounding conductor is touching the grounded conductor
Optional standby systems utilizing automatic transfer equipment shall have adequate capacity and rating for the supply of ____. Select one: a. all emergency lighting and power loads b. the load, as calculated in Article 220 c. 100 percent of the appliance loads and 50 percent of the lighting loads d. 100 percent of the lighting loads and 75 percent of the appliance loads
The correct answer is: the load, as calculated in Article 220 Subject : Optional standby systems Index : Capacity and rating
In a combination circuit, to identify which paths are series and which paths are parallel, you should ___________. Select one: a. trace the current path(s) b. trace the voltage path(s) c. calculate total resistance d. calculate total current
The correct answer is: trace the current path(s)
The meter that measures power is the __________. Select one: a. ohmmeter b. wattmeter c. voltmeter d. ammeter
The correct answer is: wattmeter
Where the air conditioner disconnecting means is not within sight from the equipment, the provision for locking or adding a lock to the disconnecting means shall be on the switch or circuit breaker and remain in place ________ the lock installed. Select one: a. with b. without c. with or without d. none of these
The correct answer is: with or without Subject : Air-conditioning and refrigerating equipment Index : Disconnecting means(not as close 440-II) OR Subject : In sight from Index : Air-conditioning and refrigerating equipment
Type NM cables can be used for feeder temporary installations ________ height limitation and without concealment. Select one: a. with a 10 ft b. with a 15 ft c. without d. None of the above
The correct answer is: without Subject : Temporary installations Index : Feeders2017 NEC 590.4(B)
The space above a hung ceiling used for environmental air-handling purposes is an example of _____, and the wiring limitations of ____ apply. Select one: a. a plenum used for environmental air, 300.22(B) b. other spaces used for environmental air, 300.22(C) c. a duct used for environmental air, 300.22(B) d. none of these
The correct answer is: other spaces used for environmental air, 300.22(C) Subject : No need to subject indexIndex :
A panelboard shall be provided with physical means to prevent the installation of more _______ devices than that number for which the panelboard was designed, rated, and listed. Select one: a. overcurrent b. equipment c. circuit breaker d. all of these
The correct answer is: overcurrent Subject : Panelboards Index : Overcurrent protection OR Subject : Overcurrent protection Index : Panelboards
Raceways, cable trays, cablebus, auxiliary gutters, cable armor, boxes, cable sheathing, cabinets, elbows, couplings, fittings, supports, and support hardware shall be of materials suitable for ____. Select one: a. corrosive locations b. wet locations c. the environment in which they are to be installed d. none of these
The correct answer is: the environment in which they are to be installed Subject : Protection Index : General Equipment (or) Metal equipment
The minimum distance that an outlet box containing tap supply conductors is permitted to be placed from a recessed luminaire is ________. Select one: a. 1 ft b. 2 ft c. 3 ft d. 4 ft
The correct answer is: 1 ft Subject : TapsIndex : Luminaires OR Subject : Recessed luminaire Index : Wiring
Outside secondary conductors can be of unlimited length without overcurrent protection at the point they receive their supply if: Select one: a. The conductors are suitably protected from physical damage. b. The conductors terminate at a single circuit breaker or a single set of fuses that limits the load to the ampacity of the conductors. c. A and B d. none of these
The correct answer is: A and B Subject : Overcurrent protectionIndex : LocationLists 4 codes, unfortunately it is the last one: 240-IINEC 2017: 240.21(B)2017 NEC 240.21(B)(5)(1,2)
In other than dwelling units, attics and underfloor spaces containing heating, air-conditioning, and refrigeration equipment, at least one lighting outlet containing a switch or controlled by a wall switch shall be installed ________. Select one: a. at the equipment requiring servicing b. near the equipment requiring servicing c. A or B d. none of these
The correct answer is: A or B Subject : Lighting outletsIndex : N/A2017 NEC 210.70
On a 4-wire, delta-connected system where the midpoint of one phase winding is grounded, the conductor having the higher phase voltage-to-ground shall be durably and permanently marked by an outer finish that is ______ in color. Select one: a. black b. red c. blue d. orange
The correct answer is: orange Subject : Delta-connectedIndex : Identifying high-leg, 3-phase supply, 4-wire,
In general, the minimum size conductor permitted for use in parallel installations is ____ AWG. Select one: a. 10 b. 4 c. 1 d. 1/0
The correct answer is: 1/0 Subject : ConductorsIndex : Paralleled
A service is supplied by three metal raceways, each containing 600 kcmil ungrounded conductors. Determine the bonding jumper size for each service raceway. Select one: a. 1/0 AWG b. 3/0 AWG c. 250 kcmil d. 500 kcmil
The correct answer is: 1/0 AWG Subject : jumper, bondingIndex : Equipment2017 NEC 250.102(C)(2), Table 250.102(C)(1)
A three-resistor circuit has a total power of 25 W. Two of the resistors dissipate 10 W and 5 W respectively. How much power does the third resistor dissipate? Select one: a. 25 W b. 10 W c. 2 W d. 15 W
The correct answer is: 10 W
____ is a raceway of circular cross section having an outer liquidtight, nonmetallic, sunlight-resistant jacket over an inner flexible metal core. Select one: a. FMC b. LFNMC c. LFMC d. none of these
The correct answer is: LFMC Subject : Liquidtight flexible metallic conduit (Type LFMC), Index : Definition,2017 NEC 350.2
Nonmetallic boxes can be used with ____. Select one: a. nonmetallic cables b. nonmetallic raceways c. flexible cords d. all of these
The correct answer is: all of these Subject : Boxes (outlet, device, pull, and junction),Index : Nonmetallic,
Means shall be provided to simultaneously disconnect the ________ of all fixed electric space-heating equipment from all ungrounded conductors. Select one: a. heater b. motor controller(s) c. supplementary overcurrent protective device(s) d. all of these
The correct answer is: all of these Subject : Fixed electric space-heating equipment Index : Control and protection Sub Index: Disconnecting means OR Subject : Disconnecting means Index : Electric space-heating equipment Takes you to 424 -III
What NEC article has the majority of definitions? Select one: a. Table of contents b. article 100 c. article 400 d. index
The correct answer is: article 100
Type AC cable is permitted in ___ installations. Select one: a. wet b. cable tray c. exposed d. b and c
The correct answer is: b and c Subject : Armored cable (Type AC), Index : Uses permitted,
Openings around electrical penetrations into or through fire-resistant-rated walls, partitions, floors, or ceilings shall ____ to maintain the fire-resistance rating. Select one: a. be documented b. not be permitted c. be firestopped using approved methods d. be enlarged
The correct answer is: be firestopped using approved methods Subject : Spread of fire or products of combustion, see Fire spreadIndex : Prevention of, wiring methodsORSubject : Firewall,wiring throughIndex : None
Exposed conductive parts of luminaires shall be ________. Select one: a. connected to an equipment grounding conductor b. painted c. removed d. A and B
The correct answer is: connected to an equipment grounding conductor Subject : Luminaires Index : Grounding (Takes you to a broad part V of 410) OR Subject : Exposed Index : Luminaire parts (Takes you to exact section)
A multioutlet assembly can be installed in ____. Select one: a. dry locations b. wet locations c. a and b d. damp locations
The correct answer is: dry locations Subject : Multioutlet assembly, Index : Uses permitted2017 NEC 380.10
The length of the cord for a trash compactor shall not be longer than _______, measured from the rear of the appliance. Select one: a. 2 ft b. 4 ft c. 6 ft d. 8 ft
The correct answer is: 4 ft Subject : Appliances, Cords, see Cords, flexible Index : FlexibleNote : For dishwashers the length has been increased to 6.5 ft in the 2017 NEC
Ten 1200 W lighting fixtures are connected on a 277 V system. How many amps might the circuit draw? Select one: a. 23 b. 60 c. 43 d. 54
The correct answer is: 43 1200 W x 10 = 12000 W12000 W / 277 V = 43.321
Raceways and cables installed into the ____ of open-bottom equipment shall not be required to be mechanically secured to the equipment. Select one: a. bottom b. sides c. top d. any of these
The correct answer is: bottom Subject : RacewaysIndex : securedIndex takes you to 300.11...Close enough ORSubject : RacewaysIndex : continuityIndex takes you to 300.12...A lot closer
Fixed electric space-heating equipment shall be considered a(n) _________ load. Select one: a. noncontinuous b. intermittent c. continuous d. none of these
The correct answer is: continuous Subject : Fixed electric space-heating equipment, Index : Branch circuits for OR Subject : Branch circuits Index : Fixed electric space-heating equipment
A two-branch parallel circuit has 2 A of current in one branch and 3 A in the other branch. The branch considered to carry the larger load is the branch with _____ A. Select one: a. 2 b. 3 c. 5 d. 6
The correct answer is: 3
The dedicated equipment space for electrical equipment that is required for panelboards is measured from the floor to a height of _______ ft above the equipment, or to the structural ceiling, whichever is lower. Select one: a. 3 b. 6 c. 12 d. 30
The correct answer is: 6 Subject : Working spaceIndex : About electrical equipment,
Grounded conductors larger than ________ can be identified by distinctive white or gray markings at their terminations. Select one: a. 10 AWG b. 8 AWG c. 6 AWG d. 4 AWG
The correct answer is: 6 AWG Subject : ConductorsIndex : GroundedSub Index : Identification2017 NEC 200.6 This gets you to the general area.Must look for 200.6(B)(4)
An electric motor is running on 120 V. The current is measured to be 2 A. How many ohms of resistance is the motor? Select one: a. 60 b. 118 c. 122 d. 240
The correct answer is: 60 120 V / 2 A = 60
For circuits rated 100A or less, when the equipment terminals are listed for use with 75º conductors, the ________ column of Table 310.15(B)(16) shall be used to determine the ampacity of all THHN conductors installed. Select one: a. 30º C b. 60º C c. 75º C d. 90º C
The correct answer is: 75º C Subject : TerminalsIndex : connections to,2017 Nec 110.14
Where direct-buried conductors and cables emerge from grade, they shall be protected by enclosures or raceways to a point at least ____ above finished grade. Select one: a. 3 ft. b. 6 ft. c. 8 ft. d. 10 ft.
The correct answer is: 8 ft. Subject : Underground wiringIndex : Protection of,ORSubject : ProtectionIndex : Underground installations
When using the subject indexing technique what should you do if the first subject you that choose to look up is not in the index? Select one: a. Use the table of contents b. Manually hunt for the article c. Choose another subject word and try again d. Give up
The correct answer is: Choose another subject word and try again
A flexible cord conductor intended to be used as a(n) _______ conductor shall have a continuous identifying marker readily distinguishing it from the other conductor or conductors. Select one: a. ungrounded b. equipment grounding c. service d. high-leg
The correct answer is: equipment grounding Subject : CordsIndex : FlexibleSub Index : Identified conductors within, OR Subject : CordsIndex : FlexibleSub Index : Equipment grounding conductors Sub Index : Identification
Noncombustible surfaces that are broken or incomplete shall be repaired so there will be no gaps or open spaces greater than ____ at the edge of a cabinet or cutout box employing a flush-type cover. Select one: a. 1/32 in. b. 1/16 in. c. 1/8 in. d. 1/4 in.
The correct answer is: 1/8 in. Subject : Cabinets, cutout boxes, and meter socket enclosures,Index : Position in walls,NOTE: Takes you to 312.3 Close enough! 312.4 does not exist in the Index.
Nonmetallic cables can enter the top of surface-mounted cabinets, cutout boxes, and meter socket enclosures through nonflexible raceways not less than 18 in. or more than _____ ft in length if all of the required conditions are met. Select one: a. 3 b. 10 c. 25
The correct answer is: 10 Subject : Cabinets, cutout boxes, and meter socket enclosures, Index : Installation,NOTE: Takes you to general section 1, Close enough! OR Subject : ConductorsIndex : Cabinets and cutout boxes,Takes you to 312.5, a whole lot closer!
An electrical circuit has a voltage of 50 V and a resistance of 5 Ohms. What is the value of current? Select one: a. 10 A b. 45 A c. 55 A d. 250 A
The correct answer is: 10 A 50 V / 5 Ù = 10 A
Trade size 1 Intermediate Metal Conduit shall be supported at intervals not exceeding ____. Select one: a. 8 ft b. 10 ft c. 12 ft d. 14 ft
The correct answer is: 10 ft Subject : Intermediate metal conduit (Type IMC),Index : Supports and securing,
Feeder and service loads for fixed electric space heating shall be calculated at _______ percent of the total connected load. Select one: a. 80 b. 100 c. 125 d. 200
The correct answer is: 100 Subject : fixed electric space heating equipmentIndex : Load2017 NEC 220.51
Handhole enclosures covers shall require the use of tools to open, or they shall weigh over _____. Select one: a. 45 lb b. 70 lb c. 100 lb d. 200 lb
The correct answer is: 100 lb Subject : Boxes (outlet, device, pull, and junction), Index : Enclosures, handhole OR Subject : Enclosures Index : Handhole enclosures
An electric circuit has a resistance of 20 Ohms. The current is measured to be 6 A. How many volts are applied to the circuit? Select one: a. 3 1/3 b. 14 c. 26 d. 120
The correct answer is: 120 6 X 20 = 120 V
Branch-circuit conductors supplying a single continuous-duty motor shall have an ampacity not less than _________ rating. Select one: a. 125 percent of the motor's nameplate current b. 125 percent of the motor's full-load current as determined by 430.6(A)(1) c. 125 percent of the motor's full locked-rotor d. 80 percent of the motor's full-load current
The correct answer is: 125 percent of the motor's full-load current as determined by 430.6(A)(1) Subject : Motors Index : Conductors Sub Index : Single Motor
The minimum clearance for overhead service conductors not exceeding 600V that pass over commercial areas subject to truck traffic is _________. Select one: a. 10 ft b. 12 ft c. 15 ft d. 18 ft
The correct answer is: 18 ft Subject : Overhead service conductorsIndex : clearences2017 NEC 230.24(B)(4)
There shall be a minimum of one ________ ampere branch circuit for the laundry receptacle outlet(s) in a dwelling unit. Select one: a. 30 b. 20 c. 15 d. GFCI 15
The correct answer is: 20 Index Subject: LaundrySub Index: OutletsSub Index: Dwelling2017 NEC Article: 210.11(C)(2)
Snap switches rated _________ or less directly connected to aluminum conductors shall be listed and marked CO/ALR. Select one: a. 15A b. 20A c. 25A d. 30A
The correct answer is: 20A Subject : Snap switches, Index : Ratings, OR Subject : CO/ALR Index : Switches
Conductor derating factors shall not apply to conductors in nipples having a length not exceeding _____. Select one: a. 12 in. b. 24 in. c. 36 in. d. 48 in.
The correct answer is: 24 in. Subject : Conduit nipplesIndex : N/A2017 NEC Chap. 9, Table 1 Note 4or 310.15(B)(3)(a)(2)Index refers to only chap. 9.
In dwelling units, at least one receptacle outlet shall be installed at each peninsular countertop having a long dimension of ____ in. or greater, and a short dimension of _____ in. or greater. Select one: a. 12, 24 b. 24, 12 c. 24, 48 d. 48, 24
The correct answer is: 24, 12 Subject: Countertops,OutletsIndex: None2017 NEC 210.52(C)
Each tap conductor to a common grounding electrode conductor for multiple separately derived systems shall be sized in accordance with _______ based on the derived ungrounded conductors of the separately derived system it serves. Select one: a. 250.66 b. 250.118 c. 250.122 d. 310.
The correct answer is: 250.66 Subject : Grounding electrode conductorIndex : separately derived systemsor: sizing ORSubject: tapsIndex: seperatly derived systems 2017 NEC 250.30(A)(6)(2)(b)
You have been asked to add a 4200 W lighting fixture to a 20 amp lighting circuit. What is the voltage needed to comply with the NEC? Select one: a. 120 V b. 240 V c. 277 V d. none of the above
The correct answer is: 277 V Loaded at 80% or 16 amps4200 ÷ 16 = 262.5277 is the nominal voltage that would be present
How many 400 W fixtures could be installed on a 120 V 15 amp circuit? a. 3 b. 5 c. 6 d. 8
The correct answer is: 3 3 x 400 = 1200 WA lighting circuit should be loaded to 80%80% of 15 amps is 12 amps or 1440 WResidential Molded Case Breakers can only be loaded to 80%
Branch-circuit conductors within ________ of a ballast shall have an insulation temperature rating not lower than 90 degrees C (194 degrees F). Select one: a. 1 in b. 3 in c. 6 in d. 8 in
The correct answer is: 3 in Subject : Luminaires Index : Branch circuits
When the opening to an outlet, junction, or switch point is less than 8 in. in any dimension, each conductor shall be long enough to extend at least ____ outside the opening of the enclosure. Select one: a. 0 in. b. 3 in. c. 6 in. d. 12 in.
The correct answer is: 3 in. Subject : ConductorsIndex :Length in boxes ORSubject : LengthsIndex : Free conductors at outlets and switches
Rigid Polyvinyl Chloride conduit shall be securely fastened within ____ of each box. Select one: a. 6 in. b. 12 in. c. 24 in. d. 36 in.
The correct answer is: 36 in. Subject : Rigid polyvinyl chloride conduit (Type PVC), Index : Securing and supporting,2017 NEC 352.30(A)
The dimension of working space for access to live parts operating at 300V, nominal-to-ground, where there are exposed live parts on both sides of the workspace is _____ ft according to Table 110.26(A)(1). Select one: a. 3 b. 3 1/2 c. 4 d. 4 1/2
The correct answer is: 4 Subject : Working spaceIndex : About electrical equipment,
In an ac system, the size of the grounding electrode conductor to a concrete-encased electrode that is the sole connection, shall not be required to be larger than a(n) ________ copper conductor. Select one: a. 10 AWG b. 8 AWG c. 6 AWG d. 4 AWG
The correct answer is: 4 AWG Subject : ConcreteIndex : Electrodes encased inORSubject : Grounding electrode conductorIndex : Sizing 2017 NEC 250.66(B)
A storable swimming pool is capable of holding water to a maximum depth of ________ inches. Select one: a. 24 b. 36 c. 42 d. 48
The correct answer is: 42 Index Subject: Swimming Pools, Fountains and Similar Installations Sub-Index: Storable - Definition NEC Article: 680.2
Equipment associated with the electrical installation can be located above or below other electrical equipment within their working space when the associated equipment does not extend more than _____ in. from the front of the electrical equipment. Select one: a. 3 b. 6 c. 12 d. 30
The correct answer is: 6 Subject : Working spaceIndex : About electrical equipment,
A three branch parallel circuit has resistors of 27 Ohms, 56 Ohms, and 15 Ohms. What is the total resistance? Select one: a. 9.64 Ohms b. 98 Ohms c. 18.22 Ohms d. 8.22 Ohms
The correct answer is: 8.22 Ohms
In an area served by a separately derived system, the _______ shall be connected to the grounded conductor of the separately derived system. Select one: a. structural steel b. metal piping c. metal building skin d. A and B
The correct answer is: A and B Subject : Grounding electrode conductorIndex : separately derived systemsORSubject: BondingIndex: Separately derived systems2017 NEC 250.30(A)(8)
______, 125V, and 250V receptacles installed in a wet location shall have an enclosure that is weatherproof whether or not the attachment plug cap is inserted. Select one: a. 15A b. 20A c. A and B d. none of these
The correct answer is: A and B Subject : Outdoor receptacles, Index : N/A OR Subject : Damp or wet locations Index : Receptacles
What is the definition of bonding jumper? Select one: a. Connected to establish electrical continuity and conductivity. b. A reliable conductor to ensure the required electrical conductivity between metal parts required to be electrically connected. c. The connection between two or more portions of the equipment grounding conductor. d. The connection between the grounded circuit conductor and the equipment grounding conductor at the service.
The correct answer is: A reliable conductor to ensure the required electrical conductivity between metal parts required to be electrically connected. Index Subject: Jumpers, bonding ___ Sub-Index: definition NEC Article: 100
Liquidtight Flexible Nonmetallic Conduit shall be permitted for _____. Select one: a. direct burial where listed and marked for the purpose b. exposed work c. outdoors where listed and marked for this purpose d. all of these
The correct answer is: all of these Subject : Liquidtight flexible nonmetallic conduit (Type LFNC), Index : Uses permitted,2017 NEC 356.10(3) and (4)
Overcurrent devices shall not be located _________. Select one: a. where exposed to physical damage b. near easily ignitable materials, such as in clothes closets c. in bathrooms of dwelling units d. all of these
The correct answer is: all of these Subject : Overcurrent protectionIndex : Location2017 NEC 240.24(C),(D), and (E)
Which of the following switches must indicate whether they are in the open (off) or closed (on) position? Select one: a. General-use switches b. Motor-circuit switches c. Circuit breakers d. all of these
The correct answer is: all of these Subject : Switches Index : Indicating OR Subject : Circuit breakers Index : Indicating
Type UF cable shall not be used in ____. Select one: a. motion picture studios b. storage battery rooms c. hoistways d. all of these
The correct answer is: all of these Subject : Underground feeder and branch-circuit cable (Type UF), Index : Uses not permitted,
GFCI protection shall be provided for electrically heated floors in ________ locations. Select one: a. bathroom b. hydromassage bathtub c. kitchen d. all the above
The correct answer is: all the above Subject : Fixed electric space-heating equipment Index : Cables Sub Index : Installation, In concrete or poured masonry floors OR Subject : Ground fault circuit interrupters Index : Fixed electric space heating cables
For cord-and-plug connected appliances, _______ plug and receptacle is permitted to serve as the disconnecting means. Select one: a. a labeled b. an accessible c. a metal enclosed d. none of these
The correct answer is: an accessible Subject : Appliances Index : Disconnecting means, (Takes you to General area 422-III) OR Subject : Disconnecting means, Index : Receptacles, cord connectors and attachment plugs (Takes you to code section)
In a concealed installation, Flexible Metal Conduit _____ connectors shall not be used. Select one: a. straight b. angle c. grounding-type d. none of the
The correct answer is: angle Subject : Flexible metal conduit (Type FMC),Index : Couplings and connectors,2017 NEC 348.42
Unused openings other than those intended for the operation of equipment, intended for mounting purposes, or permitted as part of the design for listed equipment shall be _________. Select one: a. filled with cable clamps or connectors only b. taped over with electrical tape c. repaired only by welding or brazing in a metal slug d. effectively closed to afford protection substantially equivalent to the wall of the equipment
The correct answer is: effectively closed to afford protection substantially equivalent to the wall of the equipment Subject : Unused openingsIndex : Boxes and fittingsNEC 2017 110.12(A)
In straight pulls, the length of the box or conduit body shall not be less than ___ times the trade size of the largest raceway. Select one: a. six b. eight c. twelve d. none of these
The correct answer is: eight Subject : Pull boxes Index : Sizes, 4 AWG and larger conductors OR Subject : Junction boxesIndex : Sizes, 4 AWG and larger conductors OR Subject : Conduit bodiesIndex : pull and juction box
The two to six disconnects for a disconnecting means for a building supplied by a feeder shall be ______ Select one: a. the same size b. grouped c. in the same enclosure d. none of thes
The correct answer is: grouped Subject : Outside branch circuits and feedersIndex : More than one building or structureSub index: DisconnectSub Sub Index: Grouping2017 NEC 225.34
Receptacles mounted in boxes flush with the finished surface or projecting beyond it shall be installed so that the mounting yoke or strap of the receptacle is ________. Select one: a. held rigidly against the box or box cover b. mounted behind the wall surface c. held rigidly at the finished surface d. none of these
The correct answer is: held rigidly against the box or box cover Subject : Receptacles, cord connectors, and attachment plugs (caps), Index : Mounting
Flexible cords used in listed extension cord sets shall be considered protected against overcurrent when used in (within) _________. Select one: a. indoor installations b. unclassified locations c. the extension cord's listing requirements d. 50 ft of the branch-circuit panelboard
The correct answer is: the extension cord's listing requirements Subject : Extension cord setsIndex : Overcurrent protection2017 NEC 240.5
Enclosures not over 100 cu in. having threaded entries and not containing a device shall be considered to be adequately supported where ____ or more conduits are threaded wrenchtight into the enclosure and each conduit is secured within 3 ft of the enclosure. Select one: a. one b. two c. three d. none of these
The correct answer is: two Subject : Boxes (outlet, device, pull, and junction),Index : Secured and supporting,ORSubject : Junction boxesIndex : Supports
When counting the number of conductors in a box, a conductor running through the box with an unbroken loop or coil not less than twice the minimum length required for free conductors shall be counted as ____ conductor(s). Select one: a. one b. two c. three d. four
The correct answer is: two Subject : Boxes (outlet, device, pull, and junction), Index : Fill calculations, (OR) Conductors, number in box,ORSubject : Conductor fillIndex : Boxes
