Final Review Questions
Chapter #5 Specify the maximum overcurrent protection permitted for the following the circuit conductor sizes: 14 AWG 12 AWG 10 AWG ------------------ 15 A 20 A 30 A
14 AWG 15A 12 AWG 20A 10 AWG 30A
Chapter 20 Match the following types of range-dryer terminal and receptacle connectors with the color coding of their appropriate conductor. Black/& Red White Green ____________________________________________________________________________________________ Equipment grounding conductor Grounded (neutral) conductor Phase (hot) conductors
Black/& Red: Phase (hot) conductors White: Grounded (neutral) conductor Green: Equipment Grounding Conductor
Chapter 21 Dishwashers and kitchen waste disposers may be connected to any of the required 20-ampere small-appliance branch circuits in the kitchen. Select one: True False
False
Chapter 23 When making a calculation for sizing a service or feeder, you must include 125 percent of the rating of the total connected fixed space heating load. Select one: True False
False
Chapter 26 Fire is the second leading cause of accidental death. Select one: True False
False
Chapter 29 Standby power conductors and normal power conductors should never run in the same raceway or enclosure. Select one: True False
False
Chapter 29 Where the normal power main service disconnecting means is located inside of the home, some electrical inspectors will require that a disconnect for the standby power from the generator be installed near the back door of the home. Select one: True False
False
Chapter 32 Standby power conductors and normal power conductors should never run in the same raceway or enclosure. Select one: True False
False
Chapter 32 Where the normal power main service disconnecting means is located inside of the home, some electrical inspectors will require that a disconnect for the standby power from the generator be installed near the back door of the home. Select one: True False
False
Chapter #5: Receptacles have several screw terminals for the attachment of circuit conductors. Match the following screws with their intended conductor. Green hexagonal screw Brass-colored screw Silver-colored screw ---------------------- Equipment Grounding Conductor Hot (Phase) Conductor Grounded (White) Conductor
Green hexagon screw Equipment-Grounding Conductor Brass-colored Screw Hot (Phase)-Conductor Silver-colored Screw-Grounded (White) conductor
Chapter #7 When making up cord connections on a chain-hung fixture, the conductor with the grooved or raised insulation is the ____ conductor. Select one: a. ungrounded b. grounding c. identified d. switch leg
Identified
Chapter 20 Match the following NEMA designations with the range and dryer plug-and-receptacle types they represent. NEMA 14-30 NEMA 14-50 NEMA 10-30 NEMA 10-50 __________________________________________________________________________________ 50A, four wire 30A, four wire 30A, three wire 50A, three wire
NEMA 14-30: 30A, four wire NEMA 14-50: 50A, four wire NEMA 10-30: 30A, three wire NEMA 10-50: 50A, three wire
Chapter #5: Match the following switch types with the correct number of terminals for each. Single Pole Switch Four-Way Switch Three-Way Switch ---------------------- Four terminals Three Terminals Two Terminals
Single-pole switch-Two terminals Four-way switch-Four terminals Three-way switch-Three terminals
Chapter 21 A dual-element fuse sized at approximately 125% of the full-load current rating of the motor adds extra overcurrent protection to the overload protection built into a food-waste disposer. Select one: True False
True
Chapter 21: Because of the problem of people being scalded, many municipalities and states have implemented code requirements that water heater thermostats be set at not over 120 degrees F (49 degrees C). Select one: True False
True
Chapter 26 Plug-in detectors are not permitted in new construction. Select one: True False
True
Chapter 26 The photoelectric type of alarm is less effective for gasoline and alcohol fires, which do not produce heavy smoke. Select one: True False
True
Chapter 29 Insulated conductors and cables in wet locations must have a "W" designation in their type marking. Select one: True False
True
Chapter 29 The generator for a standby power system is permanently installed on a concrete pad at a suitable location outside of the home. Select one: True False
True
Chapter 29 The service neutral conductor may be insulated or bare. Select one: True False
True
Chapter 29 The term separately derived system as defined in NEC Article 100 means that the transfer equipment must break all system conductors from the generator, including the neutral. Select one: True False
True
Chapter 18 Raceways ____ required be installed as a complete system between pull points before pulling in the wires. Select one: a. are b. are not
a. are
Chapter 15 When an existing dryer or electric range is replaced, the NEC ____ the grounded conductor of an existing individual branch circuit to be used for grounding the appliance frame. Select one: a. permits b. does not permit
a. permits
Chapter #6 GFCI protection is not required for ____. Select one: a. receptacle installed behind a range or refrigerator b. kitchen countertop receptacles c. bathroom receptacles d. receptacles in crawl spaces at or below grade
a. receptacle installed behind a range or refrigerator
Chapter 23 A "reversing valve" inside a heat pump changes the direction of the flow of the system's Select one: a. refrigerant b. oil c. water d. electricity
a. refrigerant
Chapter 25 Chime transformers used in dwellings are generally rated ____ volts. Select one: a. 12 b. 16 c. 20 d. 24
b. 16
Chapter #10 With ____ products, it takes two failures to create a shock hazard to the user. Select one: a. warrantied b. double-insulated c. American-made d. insulated
b. double-insulated
Chapter 29 Actual wiring of a typical standby generator consists of ____ ungrounded conductor(s) and one grounded "neutral" conductor. Select one: a. one b. two c. three d. four
b. two
Chapter #8 The maximum volt-ampere loading permitted on a 20-ampere branch circuit with a continuous load is ____ watts (volt-amperes). Select one: a. 1,440 b. 1,800 c. 1,920 d. 2,400
c. 1,920
Chapter #12 What piece of kitchen equipment is permitted to be connected to the two 20-ampere small-appliance circuits required for the kitchen and dining room area? Select one: a. lighting b. exhaust fan c. clock outlet d. none of the above
c. clock outlet
Where exposed to the weather, raceways enclosing service-entrance conductors shall be ____ and arranged to drain. Select one: a. sheathed b. unsheathed c. raintight d. flexible
c. raintight
Chapter #8 A light above a workbench is an example of ____. Select one: a. general lighting b. accent lighting c. task lighting d. security lighting
c. task lighting
Chapter 21 How long should water be left running after shutting off the disposer to flush the drain clear of food waste particles? Select one: a. 5 seconds b. 10 seconds c. 15 seconds d. 20 seconds
c. 15 seconds
Chapter 19 Because a water heater represents a continuous load, the branch circuit must be rated not less than ____ percent of the water heater nameplate rating. Select one: a. 50 b. 75 c. 100 d. 125
d. 125
Chapter # 13 Portable lighting tracks must ____________. Select one: a. be longer than 8 ft b. have a cord not less than 5 ft permanently attached to the track c. have overcurrent protection (fuse or circuit breaker) built into the plug cap d. All of the above
d. All of the above
Chapter 23 The article that covers cord-and-plug connected air conditioners is ____. Select one: a. Article 210 b. Article 422 c. Article 430 d. Article 440
d. Article 440
Chapter 20 When connecting foreign-made appliances, the equipment grounding terminal might be marked with the letter ____. Select one: a. G b. T c. F d. E
d. E
Chapter 21 A duplex grounding-type receptacle is usually installed in an accessible location under the sink for plugging in the dishwasher and food waste disposer, and it does not have to be ____ protected. Select one: a. AFCI b. IDCI c. assured grounding conductor d. GFCI
d. GFCI
Chapter #12 GFCI protection can be provided for convenience receptacles serving kitchen countertop areas by ____. Select one: a. GFCI circuit breakers b. installing a GFCI-protected receptacle at each location c. installing a single feed-through type GFCI receptacle to protect downstream receptacles d. all of the these
d. all of the these
Chapter 15 NEC 210.70(A)(3) addresses ____ that are used for storage and attics that contain equipment that might need servicing, such as air-conditioning equipment. Select one: a. powder rooms b. crawlspace areas c. basements d. attics
d. attics
Chapter 27 A main service disconnect shall not be installed in a ____. Select one: a. bedroom b. laundry room c. garage d. bathroom
d. bathroom
Chapter #8 How many lighting outlets are permitted on one branch circuit? Select one: a. 10 b. 12 c. 15 d. no limit
d. no limit
Chapter #12 The NEC defines a kitchen as an area with a sink and ____ provisions for food preparation and cooking. Select one: a. at least temporary b. permanent c. normal d. stationary
permanent
Chapter 25 Antennas and lead-in conductors may be attached to an electric service mast if they are kept a minimum of 36 in. (900 mm) below the power conductors. Select one: True False
False
Chapter 26 According to NFPA 72, fire warning equipment has two primary purposes: to provide protection to property, and to provide a reliable means to notify the occupants of the presence of a threatening fire and the need to escape to a place of safety. Select one: True False
False
Chapter 26 NFPA 72 29.1.2 states that smoke and heat alarms shall be installed in all occupancies where required by governing laws, codes, or standards. This puts the responsibility on the local building department. Select one: True False
False
Chapter 29 Local authorities are unauthorized to publish code requirements specifically for their communities. Select one: True False
False
On the outside of a building, position and fasten lead-in conductors so they cannot swing closer than 24 in. (600 mm) to light and power conductors having not over 250 volts between conductors; 8 ft (3.0 m) if over 250 volts between conductors. Select one: True False
False
Chapter 32 The generator for a standby power system is permanently installed on a concrete pad at a suitable location outside of the home. Select one: True False
True
Chapter 32 The term separately derived system as defined in NEC Article 100 means that the transfer equipment must break all system conductors from the generator, including the neutral. Select one: True False
True
Chapter 29 When figuring kitchen load to calculate residential service size, which factor must be included? Select one: a. 1,500 volt-amperes for each small-appliance branch circuit b. 180 volt-amperes for each kitchen receptacle not on the small-appliance circuits (refrigerator, gas range, clock, etc.) c. 100 volt-amperes for lighting d. none of these
a. 1,500 volt-amperes for each small-appliance branch circuit
Chapter 23 The disconnect for motor-driven appliances having a motor of greater than ____ must be within sight of the appliance. Select one: a. 1/8 hp b. 1/4 hp c. 1/2 hp d. 3/4 hp
a. 1/8 hp
Chapter 19 UL requires that the power (wattage) input must not exceed ____ percent of the water heater's nameplate rating. Select one: a. 105 b. 110 c. 125 d. 150
a. 105
Chapter 19 Dual-voltage-rated pump motors are rated ____. Select one: a. 115/230 b. 120/240 c. all of the above d. none of the above
a. 115/230
Chapter 26 In newly constructed homes, smoke detectors are required to have ____ for the primary source of power. Select one: a. 120-volt ac b. 24-volt dc c. a lithium-ion battery d. an emergency micro-generator
a. 120-volt ac
Chapter 23 The disconnecting means and branch circuit conductors for an electric furnace shall be sized not less than ____ percent of the total nameplate load shown on the furnace. Select one: a. 125 b. 150 c. 225 d. none of these
a. 125
Chapter 27 NEC 300.4(F) states that if ____ AWG or larger ungrounded circuit conductors enter a cabinet, box enclosure or raceway, an insulating bushing or equivalent must be used. Select one: a. 4 b. 6 c. 8 d. 10
a. 4
Chapter 19 An individual motor disconnect must be in sight of the motor controller and must disconnect the controller. The NEC definition of in sight means that the controller must be visible and not more than ____ from the disconnect. Select one: a. 50 ft (15 m) b. 75 ft (22.5 m) c. 25 ft (7.5 m) d. none of the above
a. 50 ft (15 m)
Chapter 20 A feeder or service neutral load can be figured at ____ of the load on the ungrounded conductors for ranges and ovens. Select one: a. 70 percent b. 80 percent c. 125 percent d. none of the above
a. 70 percent
Chapter 25 The type of cable most often used for television signal distribution in new residences is ____. Select one: a. 75-ohm RG6 coaxial b. 150-ohm unshielded twisted-pair c. 300-ohm twin-lead d. Type FLP
a. 75-ohm RG6 coaxial
Chapter 26 Fire-protective signaling systems installed in homes have ____ circuits where the power output is limited by the listed power supply for the system. Select one: a. Type PLFA b. Type FPLR c. Type CMP d. Type NPLFP
a. Type PLFA
Chapter 19 Should it be required to run a pump's circuit underground for any distance, it is necessary to install Type UF or Type USE cable or ____, and then make up the necessary splices in a listed weatherproof junction box. Select one: a. a raceway with suitable conductors b. connect it to pole-lighting standard grounding lugs c. other cable a minimum of 12 inches deep
a. a raceway with suitable conductors
Chapter 18 Many workshop fluorescent luminaires are furnished with a 3-wire (____) flexible cord suitable for the purpose that has the attachment plug cap factory-attached to the cord. Select one: a. black, white, green b. black, white, orange c. black, red, green d. grey, white, green
a. black, white, green
Chapter 26 Home-type smoke, heat, and carbon monoxide devices as a rule have both the ____and the alarm in one device. Select one: a. detector b. thermostat c. lock d. interconnect wire
a. detector
Chapter 19 If the values of fuses or breakers as determined by Table 430.52 do not correspond to standard sizes, ratings, or settings as listed in NEC 240.6, the next ____ rating is permitted. Select one: a. higher b. lower c. fuse
a. higher
Chapter 18 When a single receptacle of any rating is installed on an individual branch circuit, the receptacle rating must not be ____ than the rating of the branch circuit. Select one: a. more b. less
a. more
Chapter 18 When a nonmetallic wiring method is installed where short sections of metal raceway are provided for mechanical protection-or for appearance-these short sections of raceway ____ be grounded. Select one: a. need not b. need to
a. need not
Chapter 25 The combination unit that provides the compartment for the utility with controlled access and an owner's compartment is known as a ____. Select one: a. network interface b. bonding conductor c. loop d. terminal bar
a. network interface
Chapter 18 The circuit feeding the required laundry area receptacle(s) shall have ____ outlets connected to it. Select one: a. no other b. no more than one other c. only one other d. an unlimited number of
a. no other
Chapter 19 NEC 430.103requires that a disconnecting means for a motor shall ____. Select one: a. open all ungrounded conductors b. open one grounded conductor c. be designed to close automatically d. be designed so all poles operate consecutively
a. open all ungrounded conductors
Chapter 25 In a ____ chime, both notes sound as long as the push button is depressed. Select one: a. repeater tone b. 2-note c. dual d. twin-tube
a. repeater tone
Chapter 25 For new construction, the NEC _____ in a dwelling. Select one: a. requires at least one communication outlet b. requires one communication outlet on each floor c. requires one communication outlet in each habitable room. d. does not require a communication outlet
a. requires at least one communication outlet
Chapter 18 Some additional rules apply when nonmetallic-sheathed cable and armored cable are ____, because of possible physical damage to the cables. Select one: a. run exposed b. present c. run unexposed d. connected
a. run exposed
Chapter 29 When calculating residential service load, ____ are allowed for each branch circuit serving laundry receptacles. Select one: a. 1,440 watts b. 1,500 volt-amperes c. 1,920 watts d. 2,000 volt-amperes
b. 1,500 volt-amperes
Chapter 29 The conductors that run from the standby generator to the transfer switch and to the generator panel-board that contains the branch-circuit overcurrent devices shall be sized not less than ____ percent of the generator's nameplate current rating. Select one: a. 80 percent b. 115 percent c. 125 percent d. 150 percent
b. 115 percent
Chapter 32 The conductors that run from the standby generator to the transfer switch and to the generator panelboard that contains the branch-circuit overcurrent devices shall be sized not less than ____ percent of the generator's nameplate current rating. Select one: a. 80 percent b. 115 percent c. 125 percent d. 150 percent
b. 115 percent
Chapter 21 Per the specifications, the branch-circuit conductors for food waste disposers and dishwashers are ____ AWG. Select one: a. 6 b. 12 c. 24 d. 36
b. 12
Chapter 29 NEC 590.6(A)(3) requires that all 125 volt and 125/250 volt, single-phase, 15-, 20-, and 30 ampere receptacle outlets that are a part of a ____ kW or smaller portable generator shall have listed groundfault circuit interrupter protection for personnel. Select one: a. 10 b. 15 c. 25 d. 50
b. 15
Chapter 32 NEC 590.6(A)(3) requires that all 125 volt and 125/250 volt, single-phase, 15-, 20-, and 30 ampere receptacle outlets that are a part of a ____ kW or smaller portable generator shall have listed groundfault circuit interrupter protection for personnel. Select one: a. 10 b. 15 c. 25 d. 50
b. 15
Chapter 26 A smoke alarm on a flat ceiling shall be mounted at least ____ in. away from the adjoining wall. Select one: a. 2 b. 4 c. 8 d. 12
b. 4
Chapter 27 Ground rods must be at least ____ ft. in length Select one: a. 6 b. 8 c. 10 d. 12
b. 8
Chapter 25 Transformers and low-voltage wiring for doorbells are classified as ____ circuits under Article 725. Select one: a. Class 1 b. Class 2 c. Class 3 d. none of these
b. Class 2
Chapter # 6 A GFCI must have a "grounding" conductor in order to detect a ground fault Select one: a. True b. False
b. False
Chapter 25 If both 120-volt and low-voltage circuits are run into the same cable box, then ____ must be provided in the box to separate the two systems. Select one: a. a metal EMI shield b. a permanent barrier c. double-grounding d. double-insulation
b. a permanent barrier
Chapter 21 Typically, where is the single-pole wall switch that controls a continuous feed food waste disposer located? Select one: a. under the sink b. above the countertop c. on the disposer d. below the countertop
b. above the countertop
Chapter 26 A(n) ____ detector is a device that either responds to more than one of the fire phenomenon or employs more than one operating principle to sense one of these phenomenon. Select one: a. trigger b. combination c. multiple-station d. interconnected
b. combination
Chapter 20 A "unit switch" used as a disconnecting means for an appliance shall ____. Select one: a. be horsepower-rated b. disconnect all ungrounded circuit conductors c. have a NEMA 3R enclosure when installed outdoors
b. disconnect all ungrounded circuit conductors
Chapter #8 Which switch type is rarely used in residential wiring? Select one: a. single-pole b. double-pole c. three-way d. four-way
b. double-pole
Chapter 20 Cord sets rated 30 amperes are usually called ____ cords, while cord sets rated 40, 45, or 50 amperes are called ____ cords. Select one: a. SJT; SJ b. dryer; range c. heavy-duty; extra heavy-duty d. washer; dryer
b. dryer; range
Chapter 18 The branch circuit feeding the required laundry area receptacle ____ permitted to supply other dedicated equipment in the laundry room, including lighting and an exhaust fan. Select one: a. is b. is not
b. is not
Chapter 21 Small-appliance circuits are intended to serve countertops for cord-connected ____ appliances only. Select one: a. under 1/3 horsepower b. portable c. fixed-in-place d. none of the above
b. portable
Chapter 23 NEC 422.12requires that central heating equipment, other than fixed electric space heating equipment, be ____. Select one: a. supplied by fuses only b. supplied by a separate branch circuit c. grounded according to the requirements of Article 250 d. connected to at least two branch circuits
b. supplied by a separate branch circuit
Chapter 26 The importance of installing smoke and fire alarms in homes is supported by results from exhaustive investigations of home fires indicating ____. Select one: a. that measurable quantities of heat come before detectable quantities of smoke b. that measurable quantities of smoke come before detectable quantities of heat c. that smoke and heat are generally detectable at the same time d. none of these
b. that measurable quantities of smoke come before detectable quantities of heat
Chapter 20 For appliances that have no marked maximum overcurrent protection, the branch-circuit overcurrent protection is sized at ____. Select one: a. the maximum amount possible b. the ampacity of the branch-circuit conductors supplying the appliance c. 30 amperes maximum d. none of the above
b. the ampacity of the branch-circuit conductors supplying the appliance
Chapter 32 Actual wiring of a typical standby generator consists of ____ ungrounded conductor(s) and one grounded "neutral" conductor. Select one: a. one b. two c. three d. four
b. two
Chapter 19 In most residential electric water heaters, the high-temperature cutoff and ____ are combined into one device. Select one: a. upper heating element b. upper thermostat c. lower thermostat d. lower heating element
b. upper thermostat
Chapter 23 When a flexible cord is used to supply a room air conditioner, the length of the flexible cord shall not exceed ____ for 120-volt units. Select one: a. 6 ft (1.8 m) b. 8.0 ft (2.4 m) c. 10 ft (3.0 m) d. 12 ft (3.6 m)
c. 10 ft (3.0 m)
Chapter 27 For a one-family residence, the minimum size main service disconnecting means is ____ three-wire. Select one: a. 30-ampere b. 60-ampere c. 100-ampere d. 150-ampere
c. 100-ampere
Chapter 26 A wall-mounted smoke alarm shall not be mounted further than ____ in. from the corner where the ceiling meets the wall. Select one: a. 4 b. 8 c. 12 d. 24
c. 12
Chapter 27 If extra support is not to be provided, the mast service conduit must be not smaller than trade size ____ (metric designator 53) rigid metal conduit. Select one: a. 1 b. 1-1/2 c. 2 d. 2-1/2
c. 2
Chapter 21 The maximum flexible cord length permitted for a kitchen waste disposer is ____. Select one: a. 18 in. (450 mm) b. 24 in. (600 mm) c. 3 ft (900 mm) d. 6 ft (1.8 m)
c. 3 ft (900 mm)
Chapter 27 A "zone" equal to the width and depth of the electrical equipment, from the floor to a height of ____ above the equipment or to the structural ceiling, whichever is lower, is required to be dedicated to the electrical installation. Select one: a. 2 b. 4 c. 6 d. 8
c. 6
Chapter 18 The derating factor that must be used when four to six current-carrying conductors are installed in a conduit is ____ percent. Select one: a. 50 b. 70 c. 80
c. 80
Chapter 23 The total load of an air conditioner shall not exceed ____ percent of the rating of a separate branch circuit. Select one: a. 50 b. 75 c. 80 d. 125
c. 80
Chapter 25 Television antennas and lead-in wires are covered under Article ____. Select one: a. 240 b. 725 c. 810 d. 820
c. 810
Chapter 25 The article that covers cable TV wiring installations in residences is Article ____. Select one: a. 725 b. 810 c. 820 d. none of these
c. 820
Chapter 19 Water pressure tanks ____ air to maintain delivery pressure in a usable range without cycling the pump at too fast a rate. Select one: a. expans b. discharge c. compress air d. absorb
c. compress air
Chapter 20 Receptacles rated 30 amperes are referred to as ____ receptacles, while receptacles rated 50 amperes are called ____ receptacles. Select one: a. NEMA 30; NEMA 50 b. twist-lock; locking c. dryer; range d. none of the above
c. dryer; range
Chapter 26 The National Fire Alarm Code (NFPA 72) requires that fire alarm equipment be ____. Select one: a. heavy-duty only b. redundant only c. listed d. both heavy-duty and redundant
c. listed
Chapter 20 The grounding blade on the plug cap of the equipment grounding conductor is ____ than the other blades to ensure that it makes its connection before the ungrounded conductors do. Select one: a. larger b. more durable c. longer d. more tarnish-resistant
c. longer
Chapter 29 The ____ conductor is not permitted to be smaller than the grounding electrode conductor. Select one: a. ungrounded b. feeder c. neutral d. service
c. neutral
Chapter 18 In many parts of the country, the wiring method in unfinished basements is ____ in the ceiling and EMT on the walls for receptacles and switches. Select one: a. metallic-sheathed cable b. nonmetallic cable c. nonmetallic-sheathed cable d. armored cable
c. nonmetallic-sheathed cable
Chapter 18 The NEC fill calculations for a conduit nipple not over 24 in. (600 mm) allows what fill percentage for three or more conductors? Select one: a. 31% b. 40% c. 53% d. 60%
d. 60%
Chapter 25 Which rule applied to coaxial cable installations under Article 820? Select one: a. The outer shield of the coaxial cable must be grounded close to its point of entry into the building. b. Coaxial cables shall not be run in the same conduits or box with electric light and power conductors. c. Do not support coaxial cables from raceways that contain electrical light and power conductors. d. All of these rules apply.
d. All of these rules apply.
Chapter 23 Baseboard heating units can be controlled by ____. Select one: a. line-voltage thermostats b. low-voltage thermostats c. on-off switches d. both a and b
d. both a and b
Chapter 19 When a non-motor-operated electrical appliance lacks an overcurrent protective device rating, NEC 422.11(E) states that the branch circuit overcurrent protection shall be ____. Select one: a. 20 amperes if the appliance rating does not exceed 13.3 amperes b. calculated using the appliance formula in Chapter 9 c. 150 percent of the appliance rating if the appliance draws more than13.3 amperes d. both a and c
d. both a and c
Chapter 23 The NEC permits flexible cords to be used to supply appliances where ____. Select one: a. the appliance is designed to permit ready removal for maintenance and repair b. the appliance weighs less than 100 pounds c. the appliance is identified for flexible cord connection d. both a and c
d. both a and c
Chapter 20 NEC 422.60(A) requires that an appliance nameplate show the appliance rating ____. Select one: a. in volts and amperes b. in volts and watts c. and appliance branch circuit conductor size d. either a or b
d. either a or b
Chapter 20 Which means of disconnecting in unacceptable for appliances? Select one: a. circuit breaker in sight of the appliance b. circuit breaker or switch capable of being locked in the off position c. attachment cord and plug d. horsepower-rated switch
d. horsepower-rated switch
Chapter 27 Ground clamps used for bonding and grounding must be ____. Select one: a. approved b. copper c. steel d. listed for the purpose
d. listed for the purpose
Chapter 18 The advantage(s) of pull-chain switches for lighting fixtures include ____. Select one: a. local control of task lighting only b. energy conservation only c. increased safety from wall switches d. local control of task lighting and energy conservation
d. local control of task lighting and energy conservation
Chapter 18 To ensure that the conductor insulation will not be injured, be sure to ream the cut ends of rigid conduit and electrical metallic tubing to remove ____. Select one: a. rough edges only b. loose ends c. burrs only d. rough edges and burrs
d. rough edges and burrs
Chapter 29 Sizing the neutral conductor only for the normal neutral unbalance current could result in a neutral conductor too ____ to safely carry fault currents. Select one: a. loose b. large c. erratic d. small
d. small
Chapter 29 A rather recent innovation for residential metering is "____" metering, also referred to as "real-time" or "smart" metering. Select one: a. reality based b. smart-time c. actual d. time-based
d. time-based
Chapter #6 Match the outlets with the type of protection required. Bathroom receptacle outlet Garage receptacle outlet Kitchen counter receptacle outlet Unfinished basement receptacle outlet Bedroom receptacle outlet Hallway lighting outlet Kitchen lighting outlet ----------------------------------------- GFCI No Protection AFCI
Bathroom receptacle outlet-GFCI Garage receptacle outlet-GFCI Kitchen counter receptacle outlet-GFCI Unfinished basement receptacle outlet-GFCI Bedroom receptacle outlet- AFCI Hallway lighting outlet-AFCI Kitchen lighting outlet-No protection Required
Chapter #7 Various lamps have particular characteristics, even though they will vary by manufacturer. Match the type of lamp with the typical color associated with it. LED Incandescent Compact fluorescent Halogen Fluorescent ------------------------------ White Warm and Natural Soft White Warm Brilliant White Many Shades of White
LED-white Incandescent-warm and natural Compact fluorescent-soft white warm Halogen-brilliant white Fluorescent-Many shades of white
Chapter #5 The NEC requires that switching be done only in ____ conductors. Select one: a. ungrounded b. designated c. black d. red
a. )ungrounded
Chapter #7 Fluorescent fixtures mounted on low-density cellulose fiberboard must generally be mounted ____ the fiberboard surface. Select one: a. 1-1/2 in. (38 mm) from b. on strut-type channels or rod-type hangers below c. with a backboard of fire-resistant material between the fixture and d. none of the these
a. 1-1/2 in. (38 mm) from
Chapter 15 The maximum overcurrent protection for ____ AWG copper conductors is 30 amperes. Select one: a. 10 b. 20 c. 25 d. none of the above
a. 10
As a general rule, you should install a "TR" receptacle ______________ Select one: a. Wherever children may be present b. Outdoor for Temperature Resistance c. Where Temperature fluctuates wildly d. All the above
a. Wherever children may be present
Chapter#12 The sound level rating used to define fan noise is expressed in ____. Select one: a. sones b. decibels c. tenor d. range
a. sones
Chapter #5 All 125-volt, 15- and 20-ampere receptacles in a dwelling are required to be ____. Select one: a. tamper resistant b. AFCI protected c. GFCI protected d. weather resistant
a. tamper resistant
Chapter #5 Phase conductors 6 AWG and smaller ____ permitted to be re-identified as equipment ground conductors using green paint, tape, or other effective means. Select one: a. are b. are not
b. are not
Chapter 15 For most residential electric ____, receptacles and cord sets are rated 30 amperes, 125/250 volts. Select one: a. washers and dryers b. clothes dryers c. washers d. ranges
b. clothes dryers
Chapter #12 NEC 422.16(B)(4) permits a range hood to be cord-and-plug connected. The receptacle would be installed ____ the range. Select one: a. behind b. inside the cabinetry above c. no more than six inches from d. to the left of
b. inside the cabinetry above
Chapter #12 Kitchen lighting ____ permitted to be supplied by the two 20-ampere small-appliance circuits required for the kitchen and dining room area. Select one: a. is b. is not
b. is not
Chapter #12 Countertop receptacles must be supplied by at least ____-ampere small appliance branch circuits. Select one: a. one 20 b. two 20 c. one 15 d. two 15
b. two 20
Chapter #12 The 125-volt, 20-ampere receptacles installed to serve kitchen countertops are required to have GFCI protection ____. Select one: a. when they are within 6 feet of the sink b. under all circumstances c. unless provided with assured grounding conductor protection
b. under all circumstances
Chapter #7 A T12 fluorescent lamp is ____ inch(es) in diameter and a T8 is ____ inch(es). Select one: a. 1, 1/2 b. 1-1/4, 3/4 c. 1-1/2, 1 d. 1-3/4, 1-1/4
c. 1-1/2, 1
Chapter #5 Alternating current, general-use snap switches are UL-listed to control motors rated up to what horsepower? Select one: a. 1/2 b. 3/4 c. 2 d. as marked on the switch
c. 2
Chapter #6 If you wire a circuit in a dwelling that has 5 receptacles and the 3rd receptacle in the line is of the GFCI type (wired for "feed through"), and a ground fault occurs on the 4th receptacle, how many receptacles will cease working? Select one: a. None (wired in feed through) b. 1 (where the fault occurred) c. 3 d. 5
c. 3
Chapter 15 Electric washer/dryer combinations generally require a ____-ampere branch circuit similar to that required for a typical electric clothes dryer. Select one: a. 10 b. 20 c. 30 d. 40
c. 30
Chapter #7 LEDs have a life expectancy of ____ hours. Select one: a. 600-1000 b. 6,00-10,000 c. 60,000-100,000 d. 600,000-1,000,000
c. 60,000-100,000
Chapter # 13 The most common type of dimmer used in residential applications is rated ____ watts, 125 VAC, 60 hertz. Select one: a. 100 b. 250 c. 600 d. 800
c. 600
Chapter #6 GFCI protection is required for which of the following? Select one: a. outdoor receptacles installed at eaves for snow melting equipment b. a kitchen receptacle installed inside a cabinet to supply a microwave oven c. a receptacle installed within 6 feet of a wet-bar sink d. a receptacle installed for a kitchen clock
c. a receptacle installed within 6 feet of a wet-bar sink
Chapter #5 When using individual conductors in raceway, which insulation color is NOT permitted for the grounded conductor (neutral)? Select one: a. gray b. white c. green with three white stripes
c. green with three white stripes
Chapter 15 A(n) ____ is NOT an acceptable disconnecting means for appliances. Select one: a. circuit-breaker in sight of the appliance b. circuit-breaker or switch capable of being locked in the off position c. horsepower-rated switch d. attachment cord and plug
c. horsepower-rated switch
Chapter #8 Many electricians wire the lights and receptacles in a room on different circuits because this ____. Select one: a. is required by the NEC b. is required by building codes c. offers the advantage that all power in a room will not go out if the overcurrent protective device trips d. simplifies grounding
c. offers the advantage that all power in a room will not go out if the overcurrent protective device trips
Chapter #10 Some portable appliances use double insulation in place of grounding to provide shock protection to users. Double-insulated appliances normally have ____ power cords and attachment plug caps. Select one: a. three-wire b. 16 AWG or larger c. Type SJT d. 2-wire
d. 2-wire
Chapter #5 The grounded (identified) conductor of 6 AWG or smaller must have an outer finish that is ____. Select one: a. white b. gray c. three continuous white stripes d. any of the above
d. any of the above
Chapter #7 A(n) ____ is NOT a type of fluorescent ballast. Select one: a. pre-heat b. rapid start c. instant start d. capacitor-boost
d. capacitor-boost
Chapter #8 The NEC allows what maximum number of receptacle outlets to be connected on a 120-volt residential lighting or small-appliance branch circuit? Select one: a. eight b. ten c. thirteen d. unlimited
d. unlimited
Chapter 15 Prior to the 1996 NEC, ____ receptacles and cords were permitted. However, now it is mandatory that a separate equipment grounding conductor be installed to ground the frames of electric clothes dryers and electric ranges. Select one: a. 3-wire b. 16 AWG c. 4-wire d. listed
a. 3-wire
Chapter #6 Class A GFCI devices may or may not trip (open) when a ground-fault in the range of ____ milliamperes occurs. Select one: a. 4 to 6 b. 8 to 10 c. 20 to 29 d. 30 or more
a. 4 to 6
Chapter # 13 Lighting track in residential installations are not permitted to be installed less than ____ above a finished floor unless it is protected against physical damage, or if the track is of the low-voltage type operating at less than 30 volts rms open-circuit voltage. Select one: a. 5 ft b. 6 ft c. 6 ft 7 in (2 m) d. 7.5 ft
a. 5 ft
Chapter #6 The most common type of AFCI protection installed by electricians is the _________ Select one: a. Circuit-breaker type b. Receptacle type c. Feeder type d. Portable
a. Circuit-breaker type
Chapter #6 If you are connecting a GFCI receptacle using the "feed through" configuration, the NM-B cable that is going to subsequent receptacles that are to be protected by this GFCI should be connected to the ___________________________ Select one: a. Load terminals b. Line terminals c. Silver colored terminals d. Brass colored terminals
a. Load terminals
Chapter #6 When an existing two-wire, nongrounding-type receptacle is replaced in a location where the Code requires a GFCI receptacle, it is permitted to be replaced by ____. Select one: a. a GFCI-type receptacle b. a two-wire, nongrounding-type receptacle c. a three-wire, grounding-type receptacle d. all of these
a. a GFCI-type receptacle
Chapter #5 To avoid inductive heating in metallic raceways, the NEC requires that ____. Select one: a. all circuit conductors be run in the same raceway b. the grounded (neutral) conductor be oversized c. the equipment grounding conductor be bonded to the raceway d. none of these
a. all circuit conductors be run in the same raceway
Chapter #5 The long slot on a 15-ampere, 125-volt, receptacle is the ____ conductor. Select one: a. grounded b. phase "hot" c. equipment-grounding d. traveler
a. grounded
Chapter #10 Recessed or surface-mounted luminaires and recessed exhaust fans ____ be located within the restricted zone near the bathtub. Select one: a. may b. may not
a. may
Chapter # 6 As defined in NEC Article 100, a(n) ____ is a point on the wiring system at which current is taken to supply utilization equipment. Select one: a. outlet b. luminaire c. circuit breaker d. branch circuit
a. outlet
Chapter # 13 Two popular types of electronic dimmers are ____. Select one: a. slide and rotate b. slide and push c. push and cord d. rotate and cord
a. slide and rotate
Chapter #12 The load for each small-appliance, branch circuit load is required to be calculated at ____. Select one: a. 1,440 watts b. 1,500 volt-amperes c. 1,920 watts d. 2,400 volt-amperes
b. 1,500 volt-amperes
Chapter #10 The NEC permits all bathroom receptacles to be on a single ____ branch circuit so long as it doesn't supply other loads. Select one: a. 15-ampere b. 20-ampere
b. 20-ampere
Chapter #13 A receptacle below a 4-way switch in the corner of a living room is required because the Code requires that a receptacle be installed in any wall space ____ in. or more in width. Select one: a. 12 b. 24 c. 36 d. 72
b. 24
Chapter #6 NEC 406.4(D)(4)requires____ protection where replacements are made at receptacle outlets that are required to be so protected elsewhere in the Code. Select one: a. GFCI b. AFCI c. weather d. all of these types of
b. AFCI
Chapter # 6 If you have a circuit that requires both AFCI and GFCI, you should separate the circuit because GFCI and AFCI are not compatible. Select one: a. True b. False
b. False
Chapter #6 A branch circuit that supplies a fire alarm system must be AFCI and GFCI protected. Select one: a. True b. False
b. False
Chapter #5 On isolated ground receptacles, the metal yoke ____ integrally bonded to the equipment grounding terminal of the receptacle. Select one: a. is b. is not
b. Is not
Chapter # 7 Recessed lighting fixtures constructed for installation in thermal insulation are rated as ____. Select one: a. UL b. Type IC c. Type R d. Class P
b. Type IC
Chapter # 13 Lighting track in residential installation ____ permitted to be installed in the zone 3 ft horizontally and 8 ft vertically from the top of a bathtub rim. Select one: a. are b. are not
b. are not
Chapter #10 According to NEC 406.9, receptacles ____ permitted to be installed in bathtub and shower spaces. Select one: a. are b. are not
b. are not
Chapter #10 As defined in Article 100, a bathroom is required to have a ____. Select one: a. toilet b. basin c. shower d. tub
b. basin
Chapter 15 A "unit switch" used as a disconnecting means for an electric clothes dryer shall ____. Select one: a. be horsepower-rated b. disconnects all the conductors in the appliance c. have a nema 3r enclosure when installed outdoors
b. disconnects all the conductors in the appliance
Chapter #6 A single receptacle for one appliance or a duplex receptacle for two appliances that are located within dedicated space for each appliance that in normal use is not easily moved from one place to another and that is cord-and-plug connected ____ require tamper-resistant receptacles. Select one: a. do b. do not
b. do not
Chapter #10 NEC 410.10(D) ____ lighting track to be located within a zone measured 3 ft (900 mm) horizontally and 8 ft (2.5 m) vertically from the top of a bathtub rim or top of a shower stall threshold. Select one: a. permits b. does not permit
b. does not permit
Chapter # 7 Leaving fluorescent lamps on for long periods of time ____ lamp life. Select one: a. shortens b. extends
b. extends
Chapter #7 Which of the following lamp types generally performs badly in low temperatures? Select one: a. incandescent b. fluorescent c. metal halide
b. fluorescent
Chapter #12 Because of the dangers associated with the open neutral (grounded conductor), NEC 300.13(B) does not permit the continuity of the ____ conductor to depend on a receptacle. Select one: a. ungrounded b. grounded (neutral) c. both a and b d. none of the above
b. grounded (neutral)
Chapter #8 Receptacles installed on 15- and 20-ampere branch circuits must be of the ____ type. Select one: a. duplex b. grounding c. ground-fault protected d. arc-fault protected
b. grounding
Chapter #13 Electronic dimmers use triacs to "chop" the ac sine wave, so some incandescent lamps might ____ because the lamp filament vibrates. Select one: a. buzz b. hum c. pulsate d. whine
b. hum
Chapter # 5 Snap switches with nonmetallic yokes (straps) have a terminal for the equipment grounding conductor. Using this type of switch provides a means for grounding ____ faceplates when nonmetallic boxes are used. Select one: a. oversize (goof) b. metal c. nonmetallic d. recessed
b. metal
Chapter #5 When receptacles or switches have No. 6-32 screws secured to them with small pieces of cardboard, these pieces of cardboard must be ____ when the wiring device is installed in a metal outlet box. Select one: a. left in place b. removed c. replaced with metal lock washers d. none of these
b. removed
Chapter # 7 Fixture whips used with fixtures in suspended ceilings are permitted to be of various types of cables or conductors in flexible raceways. Regardless of the wiring method used, fixture whips are permitted to be a maximum of ____ long between outlet box and fixture. Select one: a. 3 feet b. 4-1/2 feet c. 6 feet d. 6 feet 7 inches (2 meters)
c. 6 feet
Chapter #10 Ceiling-suspended paddle fans must not be located within a zone measured ____ horizontally and ____ vertically from the top of the bathtub rim or top of a shower stall threshold. Select one: a. 2 ft (600 mm); 6 ft (1.8 m) b. 2 ft (600 mm); 8 ft (2.5 m) c. 3 ft (900 mm); 6 ft (1.8 m) d. 3 ft (900 mm); 8 ft (2.5 m)
d. 3 ft (900 mm); 8 ft (2.5 m)
Chapter #12 Cord-and-plug-connected appliances are not permitted to exceed ____ % of the branch-circuit rating. Select one: a. 50 b. 60 c. 70 d. 80
d. 80
Chapter #7 Information about what types of lighting fixtures are suitable for which types of installations can be found in the ____. Select one: a. National Electrical Code b. UL Guide Information for Electrical Equipment (White Book) c. manufacturers' catalogs d. all of the these
d. all of the these
Chapter #7 Luminaire is a term that refers to ____. Select one: a. incandescent lighting fixtures b. fluorescent lighting fixtures c. outdoor pole-mounted fixtures d. all of the these
d. all of the these
Chapter 15 In accessible attics, exposed cables must be protected by guard strips when ____. Select one: a. they are run across the top of joists b. they are run across the face of studs c. they are installed within 7 feet of the floor or floor joists d. all of the these
d. all of the these
Chapter #8 Residential wiring plans generally show lighting and receptacle outlet locations but not circuits. The electrician should design the installation with which of the following in mind? Select one: a. economy-minimizing the number and length of circuits b. convenience for the homeowner or other user c. National Electrical Code requirements d. all of these
d. all of these
Chapter #10 A bathroom is defined as "an area including a basin, with one or more of which items? Select one: a. toilet b. tub c. bidet d. any of the above
d. any of the above
Chapter 15 The NEC requires that an appliance nameplate show the ____. Select one: a. appliance rating in volts and amperes b. recommended overcurrent protection c. appliance connected load in volts and watts d. appliance rating in volts and amperes or the appliance-connected load in volts and watts
d. appliance rating in volts and amperes or the appliance-connected load in volts and watts
Chapter #12 A 125-volt, 15- and 20-ampere receptacle installed to serve a kitchen countertop is required to ____. Select one: a. be supplied by at least two 20-ampere small appliance circuits b. have GFCI protection for personnel c. be installed within 24 inches of the sink d. be supplied by at least two 20-ampere small appliance circuits and to have GFCI protection for personnel
d. be supplied by at least two 20-ampere small appliance circuits and to have GFCI protection for personnel
Chapter #12 Most duplex receptacles can be changed into "split-wired" receptacles by ____. Select one: a. adding an additional wire b. splitting the wires c. diverting a circuit d. breaking off the small metal tab on the terminals
d. breaking off the small metal tab on the terminals
Chapter #7 Overheating of lighting fixtures, which often results in fires, is most often caused by ____. Select one: a. burying recessed fixtures under thermal insulation b. failing to ground metal fixture bodies properly c. overlamping d. burying recessed fixtures under thermal insulation or failing to ground metal fixture bodies properly
d. burying recessed fixtures under thermal insulation or failing to ground metal fixture bodies properly
Chapter #12 A(n) ____ receptacle can be hidden behind a painting or photograph that you want to light up. Select one: a. sunken b. adjusted c. hidden d. clock hanger
d. clock hanger
Chapter #8 To be effective, accent lighting should be at least ____ times that of the surrounding general lighting. Select one: a. two b. three c. four d. five
d. five
Chapter #8 When using nonmetallic boxes, the equipment grounding conductor in nonmetallic-sheathed cable is connected to the ____-shaped equipment grounding screw found on all switches and receptacles. Select one: a. white square b. orange hexagon c. yellow rectangle d. green hexagon
d. green hexagon
Chapter #7 Fluorescent lamps are color-rated in terms of Kelvin degrees. The ____ the Kelvin degrees, the ____ the color tone. Select one: a. lower; cooler b. higher; warmer c. lower; warmer d. higher; cooler
d. higher; cooler
Chapter # 13 Lighting track in residential installations are not permitted to be installed ____. Select one: a. in damp or wet locations b. concealed locations c. through walls or partitions d. in any of these locations
d. in any of these locations
Chapter #12 When a luminaire is connected to the conductors, the outlet is referred to as a ____ outlet. Select one: a. luminaire b. receptacle c. simple d. lighting
d. lighting
Chapter #8 Which rule of thumb can be followed when planning branch circuits for dwelling units? Select one: a. one 20-ampere lighting circuit for every 200 square feet b. one 15-ampere lighting circuit for every 1000 square feet c. load circuits to no more than 50% of their rating d. load circuits to no more than 80% of their rating
d. load circuits to no more than 80% of their rating
Chapter # 13 Lighting track in residential installations are not permitted to be cut to length in the field unless permitted by the ____. Select one: a. builder b. local building codes c. homeowner d. manufacturer
d. manufacturer
Chapter #7 The NEC requires that when a suspended ceiling grid is used to support lay-in type lighting fixtures, ____. Select one: a. the grid be securely fastened together and secured to the building structure b. the lay-in fixtures be securely fastened to the grid members using bolts, screws, rivets, or listed clips c. the fixtures be Class P rated d. the grid be securely fastened together and secured to the building structure and the lay-in fixtures be securely fastened to the grid members using bolts, screws, rivets, or listed clips
d. the grid be securely fastened together and secured to the building structure and the lay-in fixtures be securely fastened to the grid members using bolts, screws, rivets, or listed clips
Chapter # 13 In addition to being fastened to the outlet box, the track for track lighting is generally fastened to the ceiling with ____. Select one: a. toggle bolts only b. screws only c. nails only d. toggle bolts and screws
d. toggle bolts and screws
Chapter #10 Install luminaires listed for ____ locations if they will be subject to shower spray. Select one: a. damp b. humid c. dry d. wet
d. wet
