semester 2 iec year 1

A. 10 AWG

What size THWN/THHN copper wire is required to supply a clothes dryer that has the following on the manufacturer nameplate?5,600 volt-amperes 240-volts 30-A circuit breaker A. 10 AWG B. 12 AWG C. 8 AWG D. 6 AWG

A. True

When an outdoor receptacle is used for the permanent connection of a cord from a 12-volt low-voltage lighting transformer, a cover must be provided that maintains the weatherproof integrity of the receptacle. A. True B. False

B. top

When measuring the depth of a buried raceway, you must measure from the top of finish grade to the ___ of the buried raceway. A. bottom B. top C. middle D. end

A. extend into the plug body so that the strain relief clamp grips it

When replacing a plug on a cord, the outer sheath (or jacket) must ___. A. extend into the plug body so that the strain relief clamp grips it B. be stripped back at least 3 inches C. be made watertight D. any of these

A. True

All DC voltage sources have a positive and a negative terminal. A. True B. False

C. either I or II

Each 10' section of lighting track is rated for 20 amps at 125 volts. The circuit supplying this track can be connected to a ___-amp, single-pole breaker in a 120/240-volt, 1Ø, 3-wire panel.I. 15 II. 20 A. I only B. II only C. either I or II D. neither I nor II

E. 240

Figure 119.570 Figure 119.570 shows an equipment layout in a laundromat. The voltage across the power source (ET) is ___ volts. A. 120 B. 220 C. 250 D. 230 E. 240

C. The total is smaller than the value of the smallest single resistance in the circuit.

What is a characteristic of the total resistance in a parallel circuit? A. The total is equal to the sum of all the resistances. B. The total is larger than the value of the largest single resistance in the circuit. C. The total is smaller than the value of the smallest single resistance in the circuit.

B. VA

Dimmers that can be used to control inductive loads such as low-voltage lighting transformers are rated in ___. A. W B. VA

A. True

Electronic dimmers are used in some installations. A. True B. False

C. either a or b

Exhaust fans are often used in laundry rooms to remove moisture. These fans can be installed in ___. A. walls B. ceilings C. either a or b D. neither a nor b

B. parallel

Figure 112.31 Refer to Figure 112.31. The receptacle and the light are connected in ___. A. series B. parallel

D. 22.5 amperes

How much current is drawn by a 240-volt clothes dryer that has a rating of 5,400 volt-amperes? A. 30 amperes B. 40 amperes C. 49 amperes D. 22.5 amperes

D. neither I nor II

If ___, electronic dimmers can be connected to an energized circuit.I. the switch leg is connected before connecting the ungrounded conductorII. the ungrounded conductor is connected before connecting the switch leg A. I only B. II only C. either I or II D. neither I nor II

B. in parallel

In general, residential loads and devices such as lighting fixtures and receptacles are connected ___ to branch circuits defined by the National Electrical Code. A. in series B. in parallel

C. I & III only

Plan ahead of time for lane changes; ___; and signal your intentions to traffic behind and swing over in a long, gradual tangent.I. check your rear view mirrors II. reduce your speed III. check your blind spots A. I, II & III B. I & II only C. I & III only D. III only E. II & III only

B. series

Scenario 119.52The nameplate on a 1Ø boiler (big water heater) indicates that it can be operated at either 240 or 480 volts. It contains two heating elements. Each element has a rating of 12.3 KW at 240 volts.Refer to Scenario 119.52. If the available supply circuit is 480 volts you will connect the elements in ___. A. parallel B. series

B. 51.25

Scenario 119.52The nameplate on a 1Ø boiler (big water heater) indicates that it can be operated at either 240 or 480 volts. It contains two heating elements. Each element has a rating of 12.3 KW at 240 volts.Refer to Scenario 119.52. When properly connected to a 480-volt circuit, the boiler will pull ___ amps through each branch circuit conductor. A. 128.125 B. 51.25 C. 82 D. 94.17 E. 102.5

D. at reduced speed and increase

Since accidents are so common in winter, you should drive on slippery roads ___ following distance behind the vehicle ahead. A. during the day and increase B. during the day and decrease C. at reduced speed and decrease D. at reduced speed and increase

A. kind of contact made by

When the road surface is slippery, braking distance is dependent upon the ___ the vehicle's tires. A. kind of contact made by B. brand of C. tread style of D. none of these

B. II only

Where the batteries are rated at 12 volts, which connection diagram shown in Figure 116.303 is correct? A. I only B. II only C. either I or II D. neither I nor II

C. both I & II

Which of these pictorial drawings shows a rotary dimmer correctly connected to operate the two luminaires? A. I only B. II only C. both I & II D. neither I nor II

A. 1Ø, 120-volt, 15- and 20-ampere

Your employer is required to provide approved ground-fault circuit interrupters for all ___ receptacle outlets being used on construction sites that are not a part of the permanent wiring of the building or structure. A. 1Ø, 120-volt, 15- and 20-ampere B. 1Ø, 120-volt and above, 30-ampere C. 1Ø, 220-volt, 15- and 20-ampere D. 1Ø, 220-volt, 30-ampere

D. 24

When a Type UF cable is installed under the driveway into a Burger King, it is required to be buried at least ___ inches below the top of the driveway (the circuit is GFCI protected). A. 6 B. 12 C. 18 D. 24

B. one (on any wall)

When a single-car garage is attached to a house, the NEC® requires that the garage have at least ___ receptacle(s) installed inside the garage. A. two (on opposite walls) B. one (on any wall) C. two (on adjacent walls) D. none are required

C. never

When can guards on tools be removed or modified to suit your needs? A. as required B. occasionally C. never D. seldom

E. III only

When direct-burial Type UF or USE cables are installed beneath concrete sidewalks or other concrete-paved areas for residential occupancies, they are required to be ___.I. installed in racewaysII. GFCI protectedIII. installed a minimum of 18 in. deep A. I and II only B. I, II & III C. II only D. I and III only E. III only F. II and III only

B. (or OL)

When extension cords are checked for insulation, an ohmmeter should indicate ___ ohms. A. 0 B. (or OL)

C. 0

With the switch in the position shown below, the voltmeter will indicate a reading of ___ volts. A. 24 B. 120 C. 0 D. 12

A.

A water filtration system is to be connected to a receptacle that is located outdoors. The receptacle cover shown at ___ should be installed. A. B. C. either a or b D. neither a nor b

A. 21.74

A water heater has a nameplate rating of 5 KW @ 230 volts. This water heater will draw ___ amperes when operated at the rated voltage. A. 21.74 B. 20.83 C. 46.0 D. 19.69 E. 22.68

D. the tank must be full of water

Before applying power to an electric water heater, ___. A. combustible materials within 50 feet should be removed B. all heating elements should be jumpered together on both ends C. superheated water should be released through the relief valve D. the tank must be full of water

B. parallel

Multiple pushbutton switches controlling a garage door opener are connected in ___ with each other. A. series B. parallel

A. True

Some types of dimmers require that a neutral (grounded conductor) be connected to the switch in addition to a "hot" and a "switch leg." A. True B. False

A. parallel

4. Figure 119.587A clothes dryer contains two heating elements that are connected as shown in Figure 119.587. These elements are connected in ___. A. parallel B. series

C. 30.5556

Figure 119.575As shown in Figure 119.575, several pieces of laundromat equipment are to be connected to a 208-volt circuit. The resistance of the washing machine (Rwm) is ___ ohms. A. 39.7995 B. 27.3131 C. 30.5556 D. 28.8889 E. 33.3333

D. 30.52

Figure 119.575As shown in Figure 119.575, several pieces of laundromat equipment are to be connected to a 208-volt circuit. The total current (IT) drawn by all the loads is ___ amps. A. 35.03 B. 40.31 C. 35.86 D. 30.52 E. 39.12

A. True

GFCI protection is required for a single receptacle installed to power a residential garage door opener. A. True B. False

A. 2

How many TV outlets are required in each bedroom per the EWR plans? A. 2 B. 6 C. 4 D. 3

A. parallel

If two identical 24-volt loads are to be operated from a single 24-volt battery, the loads would be connected in ___ to receive the correct voltage from the battery. A. parallel B. series

E. all of these

In a dwelling, GFCI-protected receptacles are required in ___. A. bathrooms B. garages C. kitchens D. basements E. all of these

A. True

In general, all 125-volt, 15-amp receptacles installed in residential garages shall have GFCI protection. A. True B. False

D. 422

NEC® Article ___ includes a section that covers using a cord and plug as a disconnecting means for a clothes dryer. A. 220 B. 300 C. 210 D. 422

E. none of these

OSHA permits extension cords to be spliced if ___ is wrapped around the splice. A. Scotch 33 electrical tape B. friction tape C. 8 mil 600-volt adhesive pads D. any of these E. none of these

B. 0

Refer to Figure 112.711. With Switch 1 OFF and voltmeter leads placed between the switch terminals (on Switch 1), the meter should indicate a reading of ___ volts. A. 240 B. 0 C. 24 D. 120 E. 12

E. 120

Refer to Figure 112.711. With Switch 2 OFF and voltmeter leads placed between the switch terminals (on Switch 2), the meter should indicate a reading of ___ volts. A. 24 B. 12 C. 240 D. 0 E. 120

B. 0

Refer to Figure 112.711. With voltmeter leads placed on the terminals on the luminaire, the meter should indicate a reading of ___ volts. Switch 1 is ON and Switch 2 is OFF. A. 240 B. 0 C. 24 D. 120 E. 12

E. 6

Refer to Figure 121.218. The raceway is Schedule 40 PVC and contains a 120-volt, 20-amp GFCI-protected circuit. The conduit is buried beneath the driveway for a house. The driveway is 6 inches thick. The minimum distance for "X" is ___ inches. A. 18 B. 24 C. 4 D. 12 E. 6

B. False

Rocks, debris or any coarse material readily available may be used to backfill a trench as long as it was removed from the same trench. A. True B. False

B. 24,600

Scenario 119.52The nameplate on a 1Ø boiler (big water heater) indicates that it can be operated at either 240 or 480 volts. It contains two heating elements. Each element has a rating of 12.3 KW at 240 volts.Refer to Scenario 119.52. When properly connected to a 480-volt circuit, the boiler will supply ___ watts of power. A. 7,688 B. 24,600 C. 12,300 D. 6,150 E. none of these

C. either I or II

The NEC® permits a ___ to be used as the disconnecting means for a 2.9 KVA, 240-volt, 1Ø air compressor.I. 2-pole circuit breaker II. 2-pole switch (DPST) A. I only B. II only C. either I or II D. neither I nor II

D. sink away heat generated within the switch

The purpose of the "fins" on a dimmer is to ___. A. hold the special cover that is provided with this switch B. ensure proper alignment of multi-switch installations C. cover the two-gang box required for these larger switches D. sink away heat generated within the switch

E. I & III only

The repair must be tested when complete. What test(s) apply to cord repair?I. continuity II. watertight integrity III. proper polarity A. I only B. I, II & III C. II only D. I & II only E. I & III only

D. 1.5

The resistance of the lamp is 1,000 ohms. Each solar cell delivers 1.5 volts. The current reading on the in-line ammeter is ___ mA. A. 111.11 B. 9 C. 666.67 D. 1.5 E. none of these

A. 5 feet (1.5 m)

Track lighting is not permitted to be installed less than ___ above the floor unless it has an open-circuit voltage of less that 30 volts RMS. A. 5 feet (1.5 m) B. 6 feet (1.8 m) C. 6 feet 7 inches (2.0 m) D. 7.5 feet (2.3 m)

B. parallel

Two 12-volt batteries would be connected in ___ to deliver the correct voltage to a 12-volt load. A. series B. parallel

A. 24

Type UF cable installed under a parking lot must be buried at least ___ inches deep. A. 24 B. 18 C. 0 D. 6

C. 18"

What is the minimum depth for 24-VAC irrigation control wiring for a residence? Schedule 40 PVC is used and is installed under the driveway. A. 24" B. 6" C. 18" D. 36"

B. 1.788

A 120-volt circuit is supplying power to three 120-volt loads. Load #1 is drawing 3.3 amps. Load #2 pulls 6.5 amps. Load #3 is drawing 5.1 amps. The total load on the circuit is ___ kW. A. 14.9 B. 1.788 C. 18.378 D. 1.531 E. 17.9

A. True

A circuit is energized. When you touch the probes (leads) of a voltmeter across the terminals of a single-pole switch that is in the OFF position, you are completing the circuit and current flows through the meter's resistance. A. True B. False

B. is required

A cover that maintains the weatherproof integrity of the receptacle ___ to be installed when an outdoor receptacle is used for the permanent connection of a cord from a lawn sprinkler system. A. is not required B. is required

B. is not

A permanently connected electric water heater ___ permitted to be supplied by a flexible cord connection. A. is B. is not

B. parallel

A water heater is rated to operate at 240 volts. The water heater contains two heating elements that operate simultaneously. Each of the heating elements is rated to operate at 240 volts. The heating elements are connected in ___ with each other. A. series B. parallel

B. arc-fault circuit interrupters

All electrical outlets in residential bedrooms shall be protected by ___. A. ground-fault circuit interrupters B. arc-fault circuit interrupters C. nonmetallic faceplates D. a & b E. a & b & c

B. 125

All fixed storage water heaters of 120 gallons or less are required to have a branch circuit over current device and conductor rating of not less than ___ percent of the nameplate rating of the water heater. A. 100 B. 125 C. 140 D. 170

C. both a and b

An ___ dimmer is a type used in some installations. A. autotransformer B. electronic C. both a and b D. neither a nor b

E. all of these

An electric circuit consists of the ___. A. power source B. conductors C. load D. switches E. all of these

D. I only

Which of the connection diagrams shown below is correct? The pushbutton switches are to operate the garage door opener from the three different locations. A. either I or II B. II only C. neither I nor II D. I only

D. 210.52(G)

Which of the following Code references requires a receptacle to be installed in a garage that is attached to a house? A. 210.8(A)(2) B. 210.52(C)(5) C. 210.70(A)(2)(a) D. 210.52(G) E. none of these

D. 12

With the switch in the position shown below, the voltmeter will indicate a reading of ____ volts. A. 120 B. 0 C. 24 D. 12

A. 6

As shown in Figure 121.212, a 120-volt post light is located in the front yard of a house. To power the light, RMC will be installed under the yard. In inches, what is the minimum depth from the top of the conduit to the top of the dirt in the yard? A. 6 B. 24 C. 18 D. 12 E. 4

A. Yes

Does the NEC® permit a 2-pole circuit breaker to be used as the disconnecting means for a 3.3 KVA, 240-volt, 1Ø air compressor? The equipment is installed in the electrical room with and is within sight of the circuit breaker panelboard. A. Yes B. No

B. False

Double-insulated tools are designed to keep your hands warm when using them. A. True B. False

A. imbalances

The GFCI is a fast-acting circuit breaker that senses small ___ in an electrical circuit caused by the electrical current leaking to ground. A. imbalances B. watt loss C. voltage drops D. resistance

A. Two

___-circuit lighting track will have five metal strips running the length of the track. Three metal strips will be on one side of the track for connection to one or two circuit neutrals and the ground. Two metal strips will be on the opposite side of the track for connection to the two circuit "hot" or ungrounded conductors. A. Two B. Three

E. 50

0. Figure 119.565 Refer to Figure 119.565. The power used by each lamp is ___ watts. A. 600 B. 12 C. 200 D. 16 E. 50

A. 250.134 or 250.138

Complete the following verbatim Code statements or provide the NEC® reference.Frames of electric ranges, wall-mounted ovens, counter-mounted cooking units, clothes dryers, and outlet or junction boxes that are part of the circuit for these appliances shall be connected to the equipment grounding conductor in the manner specified by ___. A. 250.134 or 250.138 B. 250.132 or 250.136 C. 250.130 or 250.138 D. 250.124 or 250.126

B. 422

Complete the following verbatim Code statements or provide the NEC® reference.The NEC® requirement that "each electric appliance shall be provided with a nameplate giving the identifying name and the rating in volts and amperes, or in volts and watts" is located in Article ___. A. 680 B. 422 C. 410 D. 230

B. PPE

It is important to wear your ___ when using any tool. A. rubber gloves B. PPE C. hard hat D. eye protection

B. False

It is ok to use home-made tool attachments for a short time to finish your work. A. True B. False

B. switch legs

On EWR Drawing 9, the curved lines in the living room represent ___. A. wiring methods B. switch legs C. wall position D. telephone lines

C. workshop

On the EWR plans, the water pump is located in the ___. A. kitchen B. living room C. workshop D. garage

A. True

One, two, or three circuit lighting track is available. A. True B. False

B. lower, longer

Operating a 240-volt water heater (or other resistive load) at 208 volts will result in ____ heat output (in watts) and a ____ life. A. higher, shorter B. lower, longer C. lower, shorter D. higher, longer

D. 18

RMC is the wiring method used for the illustration shown below. The conduits are threaded wrenchtight into the entries in the bottom of the "bell" box. No additional support is required for this installation (the earth can support the conduits) if the conduit length from the finish surface (dirt here) to the box is ___ inches or less. A. 12 B. 6 C. 36 D. 18

D. 10

Re: EWR plans & specs. The dual-element fuses that are recommended for back-up (supplemental overcurrent) protection on the water pump are rated at ___ amps. A. 5 B. 15 C. 3 D. 10

B. southeast

Re: EWR plans & specs. The water pump is located in the ___ corner of the house. A. northeast B. southeast C. northwest D. southwest

D. 0

Refer to Figure 119.712. With Switch 1 ON and voltmeter leads placed between the switch terminals (on Switch 1), the meter should indicate a reading of ___ volts. A. 24 B. 12 C. 240 D. 0 E. 120

D. 120

Refer to Figure 119.712. With voltmeter leads placed on the terminals on Luminaire B, the meter should indicate a reading of ___ volts. Both switches are ON. A. 240 B. 0 C. 24 D. 120 E. 12

A. 6

Refer to Figure 121.211. RMC will be installed under a 3"-thick sidewalk to get power to a 120-volt flush-mounted well light that is installed in the corner of a sidewalk at a house. In inches, what is the minimum depth from the top of the conduit to the top of the sidewalk? A. 6 B. 24 C. 18 D. 12 E. 4

A. 12

Table 300.5 in the NEC® allows residential, 120-volt, 15-amp, underground circuits to be buried as shallow as ___ inches below grade rather than 24 inches when the circuit is GFCI-protected. A. 12 B. 18 C. 6 D. 4

B. are

Tools ___ an important part of our jobs. A. are not B. are

B. never

Using a power tool with a broken ground prong is ___ permitted. A. seldom B. never C. occasionally D. always

C

Scenario 119.51:Five indicator lights are to be connected in parallel. The lamps are connected to a 6.8-volt power supply. Three of the lamps (Part #44) have a rating of 3.5 watts at 7.5 volts. Two lamps (Part #40) have a rating of 5.2 watts at 7.5 volts.Which of the drawings, shown below, is correctly connected for the circuit described in Scenario 119.51?

D. II

Figure 116.315 Refer to Figure 116.315. Without damaging the equipment, which of the connection diagrams will supply the correct voltage to the 12-volt load from the 12-volt batteries? A. IV B. I C. III D. II E. none of these

A. True

Figure 119.103 Any receptacles installed in spaces 7,8,9 or 10 must be AFCI protected. Refer to Figure 119.103 for the plan view of a bedroom in a new house. A. True B. False

B. 6

Figure 119.103 Refer to Figure 119.103 for the plan view of a bedroom in a new house. A receptacle must be installed no farther than ___ feet from the left edge of wall space . A. 2 B. 6 C. 4 D. 12

E. 5

Figure 119.103 Refer to Figure 119.103 for the plan view of a bedroom in a new house. A total of at least ___ receptacle(s) are required to be installed along wall spaces 1,2,3,4 & 5. A. 6 B. 9 C. 11 D. 7 E. 5

A. True

Figure 119.103 Refer to Figure 119.103 for the plan view of a bedroom in a new house. Any receptacles installed in spaces 1,2,3,4, or 5 must be protected by an arc-fault circuit interrupter. A. True B. False

C. either I or II

Figure 119.409The alternator (charger) on each of the boat's twin outboard motors delivers 12 volts to each of the 12-volt batteries. The boat is equipped with a depth finder, a bilge pump, and a trolling motor. Refer to Figure 119.409. Connection diagram ___ shows all the equipment correctly connected. The troll motor and the pump are both rated for 12-volt DC operation. The depth finder is rated for 24-volt DC operation. A. I only B. II only C. either I or II D. neither I nor II

D. 2.88

Figure 119.565 Refer to Figure 119.565. The resistance of each lamp is ___ ohms. A. 1.388 B. 11.52 C. .347 D. 2.88 E. 4.17

A. 4

If more than 4 feet of track is needed, at least one additional support must be installed for every extension of ___ feet or less. A. 4 B. 2 C. 6 D. 8 E. 3

C. Yes.

In the living room (Re: EWR Drawing 9), do the fixed glass panels count as wall space? A. No, if they are removable. B. Yes, if they slide open. C. Yes. D. No, if they are expensive.

C. Nationally Recognized Testing Laboratory

NRTL is an abbreviation for ___. A. Non-Residential Trade License B. National Registry of Track Luminaires C. Nationally Recognized Testing Laboratory D. Nationally Registered Track Lighting

C. both I & II

Plan ahead of time for lane changes; ___ and signal your intentions to traffic behind and swing over in a long, gradual tangent.I. check your blind spots II. check your rear view mirrors A. I only B. II only C. both I & II D. neither I nor II

C. I & III only

The alternator (charger) and starter (cranking motor) on the engine of a semi-truck tractor are rated at 24 volts. As shown in Figure 119.411, connection diagram ___ has the battery bank correctly connected. Each battery has a 12-volt rating. A. I only B. II only C. I & III only D. III only E. II & III only F. I & II only

E. 24

The maximum permitted current rating of a portable appliance on a 30-ampere branch circuit is ___ amps. A. 30 B. 15 C. 16 D. 12 E. 24

B. II only

The starter on a 12-volt outboard motor on a boat is powered by two 12-volt batteries. Which of the connection diagrams below shows the batteries correctly connected to the motor? A. I only B. II only C. either I or II D. neither I nor II

A. 6 feet (1.8m)

When laying out the wall receptacle locations in a bedroom in a house, make sure that a receptacle is installed so that no point along the floor line is more than ___ from a receptacle. A. 6 feet (1.8m) B. 9 feet (2.7m) C. 12 feet (3.7m)

D. Thermostat

Which of the following is used to regulate the heat in electric clothes dryers? A. Capacitor B. Snap switch C. Door switch D. Thermostat

D. 2,005

Scenario 121.45Refer to Scenario 121.45. The total power consumed by this circuit is ___ watts. A. 2,032 B. 2,500 C. 5,212 D. 2,005 E. 625

A. True

A circuit is energized. When you touch the probes (leads) of a voltmeter across the terminals of a single-pole switch that is in the OFF position, you are completing the circuit. A. True B. False

D. cover

As used in NEC® Table 300.5, ___ is defined as the shortest distance in millimeters (inches) measured between a point on the top surface of any direct-buried conductor, cable, conduit, or other raceway and the top surface of finished grade, concrete, or similar cover. A. rise B. backfill C. depth D. cover

D. increased

Compared to using corded tools, cordless tools provide ___ productivity. A. decreased B. eliminated C. adjusted D. increased

D. plug and receptacle

Complete the following verbatim Code statements or provide the NEC® reference.According to Article 422, an accessible separable connector or an accessible ___ shall be permitted to serve as the disconnecting means for cord-and-plug-connected appliances. A. panel B. method C. device D. plug and receptacle

D. 1

Re: EWR plans & specs. What is the horsepower rating of the water pump? A. 1/2 B. 1/6 C. 2 D. 1

A. 5.11

Scenario 121.44Refer to Scenario 121.44. When connected to the circuit, Load 2 will pull ___ amps of current. A. 5.11 B. 6.25 C. 176.9 D. 5.65 E. 40.7

C. phase-to-ground

The GFCI will protect you from ___ contact hazards. A. phase-to-neutral B. phase-to-phase C. phase-to-ground D. a & b only E. all of these

E. 8.33

A 120-volt, 1,000 watt dimmer is rated to carry a maximum of ___ amps. A. 10.42 B. 6.67 C. 11.52 D. 14.4 E. 8.33

A. parallel

Refer to Figure 119.580. The loads in this circuit are connected in ___. A. parallel B. series C. neither a nor b

B. No

Shown below is the plan view of a bathroom in a house. Receptacle B is 14" from the edge of the sink and Receptacle D is 4 feet from the sink. Does this installation violate the NEC®? A. Yes B. No

C. 16.7

The maximum current-carrying capacity of a 2,000 watt, 120-volt dimmer is ___ amps. A. 13.3 B. 20 C. 16.7 D. none of these

B. parallel

Figure 119.501 When track lighting luminaires (heads) are connected to the track as shown in Figure 119.501, these luminaires are connected in ___ to the circuit. A. series B. parallel

C. 12 volts DC

Figure 119.542 Refer to Figure 119.542. When current is flowing through the circuit there will be ___ applied to the lamp. A. 0 volts B. 12 volts AC C. 12 volts DC

E. N/A

The Code section that specifies the number of bathroom branch circuits in a restaurant is ___. Select N/A (not applicable) if there is not a Code reference for this. A. 210.11(C)(3) B. 210.8(A)(1) C. 210.8(B)(1) D. 210.52(D) E. N/A

A. I only

The ___ supplied to the connected load increases when batteries are connected in series.I. voltage II. current A. I only B. II only C. both I & II D. neither I nor II

B. No

Figure 120.207 Refer to the plan views of residential bathrooms shown in Figure 120.207. Receptacle C is 34" from the edge of the sink. Does this meet the requirements of NEC® 210.52(D)? A. Yes B. No

D. receptacle outlets

Instructions for most dimmers state that they should not be used to control ___. A. incandescent lighting B. track lighting C. valence lighting D. receptacle outlets

D. 2 1/2 circuit conductors + three devices = 11 + 6 = 17 17 x 2.00 - .34 cu. inches required 34/3 = 11.33 cu. in. is the minimum volume of ONE box = 3 x 2 x 2 1/2 box

A 3-gang switch box is to be constructed using metal device (switch) boxes. The box assembly will contain two three-ways and one dimmer switch. External connectors will be used on the AC cables entering the box. The AC does NOT contain a ground. Three 14-3 cables plus one 14-2 enter the box assembly. The shallowest boxes you can use are ___" deep. A. 2 B. 3 1/2 C. 2 3/4 D. 2 1/2 circuit conductors + three devices = 11 + 6 = 17 17 x 2.00 - .34 cu. inches required 34/3 = 11.33 cu. in. is the minimum volume of ONE box = 3 x 2 x 2 1/2 box E. 2 1/4

B. considers

A 3/4" RMC comes out of the ground and is tightly threaded into the hub of a 3/4" conduit body (such as an LB) that is 16 inches above the ground. Section 314.23 in the NEC® ___ the conduit body to be adequately supported by the rigid metal conduit. A. does not consider B. considers

B. is not

A GFCI receptacle ___ permitted to be located directly behind a freezer in a residential garage. A. is B. is not

B. 240-volt, 70-amp

A ___ branch circuit is connected to the electric furnace in the EWR residence. A. 120-volt, 20-amp B. 240-volt, 70-amp C. 240-volt, 50-amp D. 208-volt, 70-amp

C. 1,500 20 x 75 W = 1500 W = 1500 W dimmer

A room is to be illuminated with track lighting. Twenty track heads (fixtures) will be installed in the track. A 75 W PAR38 lamp will be installed in each head. The lighting is to be controlled by a dimmer. The smallest dimmer that can be installed has a rating of ___ watts. A. 600 B. 1,000 C. 1,500 20 x 75 W = 1500 W = 1500 W dimmer D. 2,000

E. 5

By U.L. Standard 153, portable light tracks must have a cord not less than ___ feet in length. A. 4 B. 6 C. 3 D. 8 E. 5

B. the marked rating of the appliance

Complete the following verbatim Code statements or provide the NEC® reference.The rating of an individual branch circuit conductors shall not be less than ___ or the marked rating of an appliance having combined loads as provided in 422.62. A. the maximum current rating B. the marked rating of the appliance C. the overcurrent size D. the minimum voltage rating

C. dangerous

Defective tools are ___ and should not be used. A. costly B. expensive C. dangerous D. none of these

A. I only

Figure 119.407The alternator (charger) on a boat's outboard motor delivers 12 volts. The boat is also equipped with a bait aerator, a bilge pump, and two 12-volt batteries. The aerator and the pump are both rated for 12-volt DC operation. Which connection diagram in Figure 119.407 shows all the equipment correctly connected? A. I only B. II only C. I & II only D. I & III only E. none of these

A. 5.33

Figure 119.501 Refer to Figure 119.501. Each luminaire (head) has a lamp with a rating of 150 watts at 130 volts. When all the lamps are operating, the 120-volt track lighting circuit will pull ___ amps. A. 5.33 B. 6.25 C. .213 D. 6.39 E. 1.25

E. 17.326

Figure 119.555Refer to Figure 119.555. With all the loads connected and operating, the total current flowing in the neutral where it enters the panel is ___ amps. A. 6.926 B. 17.967 C. 17.704 D. 1.795 E. 17.326

B. 4.172

Figure 119.560 Both schematic and pictorial circuits are shown. Refer to Figure 119.560. A total load of ___ kW will be used by the loads. A. 6.245 B. 4.172 C. 10.1 D. 17.383 E. 1.032

D. 8,453

Figure 119.570 Figure 119.570 shows an equipment layout in a laundromat. The circuit supplies ___ total watts of power (PT) to all three loads. A. 8,517 B. 8,661 C. 8,384 D. 8,453 E. 8,109

A. 35.22

Figure 119.570 Figure 119.570 shows an equipment layout in a laundromat. The total current drawn by all the loads (IT) is ___ amps. A. 35.22 B. 34.93 C. 35.03 D. 35.86 E. 39.12

A. parallel

Figure 119.581Refer to Figure 119.581. The loads in this circuit are connected in ___. A. parallel B. series C. neither a nor b

B. 4,608

Figure 119.587A clothes dryer contains two heating elements that are connected as shown in Figure 119.587. Each element is rated at 2,500 watts at 250 volts. The total power used by the clothes dryer is ___ watts when connected to the 240-volt branch circuit. A. 5,760 B. 4,608 C. 2,500 D. 5,000 E. 5,208

A. 5,538

Figure 120.390 The water heater will deliver ___ watts when operated at 208 volts as shown in Figure 120.390. A. 5,538 B. 1,995 C. 1,381 D. 8,000 E. 7,373

C. 7.46

Figure 121.402 Refer to Figure 121.402. The track is connected to a 1-pole breaker in a 120/240-volt, 1Ø panel. Each luminaire (head) has a lamp with a rating of 150 watts at 130 volts. When all the lamps are operating, the circuit will draw ___ amps. A. 1.25 B. 16.09 C. 7.46 D. 8.75 E. 5.33 Incorrect

D. 30

For the EWR project, the breaker for the water heater circuit has a rating of ___ amps. A. 40 B. 15 C. 20 D. 30

B. controller

For the EWR residence, the disconnecting means for the submersible water pump is within sight of the ___. A. motor B. controller C. both a & b

A. 120 volts

For the EWR residence, what voltage does the food-waste disposal show on the special purpose outlet schedule? A. 120 volts B. 120/240 volts C. 240 volts D. 208 volts

B. more

Generally, it is ___ expensive to repair a damaged extension cord than to buy a new cord. A. less B. more

B. is not

Lighting track ___ permitted to be installed within a zone extending 3 feet (900 mm) horizontally and 8 feet (2.5 m) vertically from the top of the bathtub rim. A. is B. is not

D. all of these

Lighting track shall be grounded in accordance with Article 250, and the track sections shall be securely coupled to maintain continuity of the ___ throughout. A. circuitry B. polarization C. grounding D. all of these E. none of these

D. 18

No additional support is required for this installation (the earth can support the conduits) if the conduit length from the finish surface (dirt here) to the box is ___ inches or less. A. 12 B. 6 C. 36 D. 18

C. 338

What Article in the NEC® covers the use of type SE cable for dryer connections? A. 300 B. 422 C. 338 D. 220

C. 6 feet

What is the maximum distance of the receptacle from the intended location of the washing machine? A. 4 feet B. 5 feet C. 6 feet D. 8 feet

C. 12"

What is the minimum depth of rigid nonmetallic conduit in a trench covered with 2 inches of concrete? A. 18" B. 24" C. 12" D. 6" E. 36"

D. all of these

When located ___, a receptacle is required to be GFCI protected. A. outside on the exterior wall of a house B. on the roof of a restaurant C. in a bathroom adjacent to a basin in a restaurant D. all of these E. none of these

D. correct storage place

When you are finished using a tool, return it to the ___. A. shop B. person who previously used it C. truck D. correct storage place

C. 5 milliamps, 1/40

Whenever the amount of current "going" to the load differs from the amount "returning" by more than approximately ___, the GFCI interrupts the electric power by opening the circuit within as little as ___ of a second. A. 10 milliamps, 1/10 B. 5 microamps, 1/10 C. 5 milliamps, 1/40 D. 10 amps, 1/40

B. False

When laying out the wall receptacle locations in a bedroom in a house, a receptacle is required to be installed in a wall space that is 1'-10" wide. A. True B. False

B. 210.23(A)(2)

Code section ___ specifies that the total rating of "hard-wired" utilization equipment shall not exceed 10 amps for a 20-amp branch-circuit where lighting units, cord-and-plug-connected utilization equipment not fastened in place, or both, are also supplied. Select N/A (not applicable) if there is not a Code reference for this. A. 230.208(B) B. 210.23(A)(2) C. 210.23(A)(1) D. 404.14(A)(3) E. N/A

B. II only

In residential bedrooms, all electrical outlets shall be protected by ___.I. ground-fault circuit interrupters II. arc-fault circuit interrupters A. I only B. II only C. both I & II D. either I or II

E. none of these is large enough

A 120-volt, ___ watt dimmer is the smallest that can be installed to control a lighting load that consists of 13 luminaires. Each luminaire has a 135 watt lamp installed. A. 1,000 B. 1,500 C. 1,200 D. 600 E. none of these is large enough

E. 8

A bathroom vanity lighting fixture will draw ___ amps when connected to a 120-volt branch circuit. The fixture has twenty-four lamps installed. Each lamp has a rating of 40 watts at 120 volts. A. 3 B. 0.33 C. .42 D. 10 E. 8

E. 98.93

A circuit has 4 identical loads connected in parallel. The circuit voltage is 277 volts and the total connected load draws 11.2 amperes of current. The resistance of each of the identical loads is ___ ohms A. 6.18 B. 1.48 C. 24.73 D. .45 E. 98.93

C. 35.03

A clothes dryer will draw ___ amps when operated at 208 volts. The dryer nameplate states that it is rated for 9.7 KW at 240 volts. A. 53.81 B. 5.94 C. 35.03 D. 40.42 E. 9.7

B. parallel

Figure 121.402 When track lighting luminaires (heads) are connected to the track as shown in Figure 121.402, these luminaires are connected in ___ to the circuit. A. series B. parallel

C. adjusting to the conditions

Most skids could be avoided by ___, and it is possible to recover from skids if you know how. A. tapping the brakes B. braking hard C. adjusting to the conditions D. using all weather tires

B. parallel

The battery compartment in a forklift contains two 36-volt batteries. The DC motor in the forklift is rated to operate at 36 volts. The two batteries are connected in ___. A. series B. parallel C. combo series/parallel

A. series

The dimmer shown in Figure 119.104 is connected in ___ with the luminaires (lighting fixtures). A. series B. parallel

C. either I or II

The experienced driver knows that skids are likely on ___, so they slow down ahead of time.I. curves II. turns A. I only B. II only C. either I or II D. neither I nor II

C. 2

The fewest number of 120-volt, 20-amp branch circuits permitted to be installed in a house is ___ when these circuits will supply power to the lighting fixtures (luminaires) in bathroom #1 plus the receptacles in all three bathrooms in a house. A. 0 B. 1 C. 2 D. 3

E. neither I nor II nor III

When ___, it is permitted to install receptacles face up in bathroom basin countertops.I. a weatherproof cover is installedII. the receptacle is GFCI protectedIII. the receptacle is located at least 6 feet from the basin A. II & III only B. III only C. I & II only D. II only E. neither I nor II nor III

D. in a 4-square box with a 2-gang plaster ring

EWR Drawing 9 shows four switches on the north wall of the study. The plan indicates that the switches for the fan/light kit are to be installed ___. A. in a 4-gang box with the two adjacent switches B. in a 2-gang box C. in a 3-gang box with the receptacle on that wall D. in a 4-square box with a 2-gang plaster ring E. in two, individual single-gang boxes

B. Total current is equal to the sum of the individual currents through the three loadsor IT = I1 + I2 + I3

For three resistive loads that are connected in parallel, which of the following statements is the ONLY true statement? A. Total resistance is equal to the sum of the individual resistancesor RT = R1 + R2 + R3 B. Total current is equal to the sum of the individual currents through the three loadsor IT = I1 + I2 + I3 C. Total voltage is equal to the sum of the voltage drops across all three resistive loadsor ET = E1 + E2 + E3

B. No.

In the study, are all 4 switches on the plan-north wall to be installed in a 4-gang box? Refer to EWR Drawing 9. A. Yes. B. No. C. Not enough information is provided. D. Yes, but only if they are stacked.

D. 26.55

Refer to Figure 119.580. How much current will flow through each "hot" circuit conductor (at the breaker terminals) and out to the loads? A. 23.12 B. 12.3 C. 7.8 D. 26.55 E. 9.04

A. 240

Scenario 119.52The nameplate on a 1Ø boiler (big water heater) indicates that it can be operated at either 240 or 480 volts. It contains two heating elements. Each element has a rating of 12.3 KW at 240 volts.Refer to Scenario 119.52. If correctly connected to a 240-volt circuit, ___ volts are applied to each element. A. 240 B. 0 C. 480 D. 208 E. 120

A. 210.70(A)(1) Exc 2

The Code section that addresses sensor (automatic) control of lighting in a residential bathroom is ___. Select N/A (not applicable) if there is not a Code reference for this. A. 210.70(A)(1) Exc 2 B. 210.8(A)(1) C. 210.8(B)(1) D. 210.70(A)(2) E. N/A

A. 210.23(A)(1)

The Code section that specifies that the rating of any one cord-and-plug-connected utilization equipment (not fastened in place) shall not exceed 12 amps for a 15-amp branch circuit is ___. Select N/A (not applicable) if there is not a Code reference for this. A. 210.23(A)(1) B. 230.208(B) C. 404.14(A)(3) D. 210.23(A)(2) E. N/A

A. 210.11(C)(3)

The Code section that specifies the number of bathroom branch circuits in a dwelling is ___. Select N/A (not applicable) if there is not a Code reference for this. A. 210.11(C)(3) B. 210.8(A)(1) C. 210.8(B)(1) D. 210.52(D) E. N/A

A 119.2 question 8

Refer to Figure 119.105. Schematic Diagram ___ (below) shows the dimmer and the lamps correctly connected. A. B. C. D. none of these

B. parallel

Refer to Figure 119.105. When correctly connected, the luminaires are connected in ___ with each other. A. series B. parallel

B. series

Refer to Figure 119.106. When correctly connected, the dimmer is connected in ___ with the luminaires. A. parallel B. series

B. False

When the aluminum "fins" on a dimmer are broken off (removed), there will be no effect on the capacity or rating of the dimmer switch. A. True B. False

E. 5,000

The minimum demand for an electric clothes dryer in a residential load calculation is ___ watts. A. 6,000 B. 2,000 C. 3,000 D. 1,500 E. 5,000