test 3

as measured along the floor line make sure that a receptacle is not more than feet from the next receptacle when laying out the wall receptacle locations in a bedroom in a house

12

which of the following code references requires a receptacle to be installed in a garage that is attached to a house

210.25 g

what is the maximum distance of the receptacle from the intended location of the washing machine

6 feet

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

6 feet 1.8m

a 750 watt heating element will draw amps at 120 volts the element is rated to operate at a single pole

6.25

the current drawn by the food waste diposer when operated at 115 volts is amps the nameplate rating is 7.2 a @130 volts

6.4

what is the rated wattage of the most commonly used dimmer that fits in a single gang box in a residence

600

section of the nec states that luminaries lighting fixtures switches receptacles and other electrical equipment not associated with the hydro massage tub shall be installed according to

680.72 chapters 6 and 7

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

fales

live vegetation such as trees may support overhead conductor spans

false

rocks, debris or any coarse material readily available may be used to back fill a trench as long as it was removed from the same trench

false

three way switching does not use an conductor

grounded

a traveler wire is

one of two wires between 3 way switches

when a single car garge is attached to a house the nec requires that the garage have at least receptacle installed inside the garage

one on any walls

a 3gang switch box is to be constructed using metal device switch boxes. the box assembly will contain two three way and one dimmer switch external connectors will be used on the ac cables entering the box remember 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

2 1/2

a 3gang switch box is to be constructed using metal device switch boxes. the box assembly will contain two three way and one dimmer switch external connectors will be used on the mc cables entering the box remember mc contains a ground three 12-3 cables plus one 12-2 enter the box assembly the shallowest boxes you can use are deep

2 3/4

a water heater has a nameplate rating of 5kw @ 230 volts. this water hearer will draw amperes when operated at the rated voltage

21.74

the code section 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 na not applicable if there is not a code reference for this

210.23 a 1

the nec reference that permits or prohibits connecting the mental frame frame of the attic exhaust fan to the grounded conductor is

250.142b

for this question assume that this is a 240 volts single phase installation. a 6500 watt cooking range installed in a residence will draw when operated at 240 volts

27 amperes

the wiring method used in figure 124.103 is 12 awg mc cable. which of the switch boxes listed below is the smallest you can use and not violate the nec note for clarity the equipment grounding conductors are not shown in the drawing

3x2x3 1/2

nec 430.102 requires that a have a disconnecting means and and that it be in sight

motor and motor's controller

a receptacle under the kitchen counter of a dwelling is used to power to a dishwasher. this receptacle is to be connected to of the two required small appliance branch circuits.

not permitted

although a box has been selected to meet the minimum volume requirements of the nec the box may be too small to accommodate the device installation without damage to the wiring in the nec addresses

section 314.24

the unit of measurement for power is represented by the letter or symbol

w

does the nec permit a 2 pole switch dpst to be used as the disconnecting means for a 3.3 kva 240 volt 10 air compressor the switch is rated for the load

yes

the code section that specifies that the rating of any one cord and plug connected utilization equipment not fastened in place shall not exceed 16 amps for a 20 amp branch circuit is select na if there is not a code reference for this

210.23 a 1

operating a 240 volt water hater or other resistivity load at208 volts will result in heat output in watts and a life

lower longer

hydro massage tuds and all of their electrical components gfci protected

shall be

the purpose of the fins on a dimmer is to

sink away heat generated within the switch

a receptacle under the kitchen counter of a dwelling is used to supply power to a disposal. is the receptacle required to be gfci protected?

yes

code section section specifies that the total rating of hard wired utilization equipment shall not exceed 7.5 amps for a 15 amp branch circuit where lighting units cord and plug connected utilization equipment not fastened in place or both are also supplied. select na not applicable if there is not a code reference for this

210.23

code section specifies that the total rating of hard wired utilization equipment not fastened in place or both are also supplied. select na if there is not a cede reference for this

210.23 a2

how much current does a 6000 volt ampere, 240- volt clothes dryer draw

25 amperes

what article in the nec covers the connection of a dryer frame to an equipment grounding conductor

250

what is the device called that senses the moisture level in an area and turns on an exhaust fan if it is too high?

humidistat

does the nec permit a 2 circuit breaker to be used as the disconnecting means for a 3.3 kva 240 volt 10 air compressor the equipment is installed in the electrical room with and is within sight of the circuit breaker panel board

yes

what article in the nec contains a section that states the branch circuit over current rating is not to exceed the over current device rating marked on the appliance

422

what nec article covers the rules necessary for the installation of appliances

422

trade size is the minimum size ent electrical nonmetallic tubing that can contain six each 6 awg copper thhn thwn conductors.

1

trade size is the minimum size rmc rigid metal that can contain six each 6 awg copper thhn thwn conductors.

1

trade size is the minimum size rmc rigid metal that can contain ten each 8 awg copper thhn thwn conductors.

1 1/4

what size thwn thhn copper wire is required to supply a clothes dryer that has the following on the manufacturer nameplate

10 awg

a room is to be illuminated with track lighting. eleven track heads fixtures will be installed in the track. a 90w reflector flood lamp will be installed in each the lighting is to be controlled a dimmer. the smallest dimmer that can be installed has a rating of watts

1000

11250 watts =kw

11.25

laundry receptacle outlets are included in the residential load calculations at a value of volt amperes per circuit

1500

four 3" x 2" metal switch boxes will be ganged together to form a 4- gang switch box for the following switches: fan switch single -pole switch single pole switch three way switch what is the minimum depth of each box one 14-2 and three 14-3 ac cables with external connectors enter the box these cables do not have grounds.

2

a 120 volt small appliance branch circuit in a house is supplying power to several receptacles. a space heater a toaster and a toaster and a waffle maker are plugged into these receptacles if the space heater draws 7 amps the toaster draws 5 amps and the waffle maker pulls 8 amps then the current carried by the circuit breaker is

20

21755 watts= kw

21.755

how much current is drawn by a 240-volt clothes dryer that has a rating of 5400 volt amperes

22.5 amperes

the maximum permitted current rating of a portable appliance on a 30 ampere branch circuit is amps.

24

type uf cable installed under a parking lot must be buried at leat inches deep.

24

a 4 x 1 1/2 inch square metal box with a single gang plaster ring is used for a receptacle box what is the minimum cubic inch capacity of the plaster ring that will be installed on the box? tow 12-3 plus one 12-2 type mc cables with ground the box and external connectors are used to attach the cables to the box

3.75

trade size is the minimum size rmc rigid metal conduit that can contain six each 6 awg copper thhn thwn conductors

3/4

the wiring method used in figure 124.103 is 14 awg bx ac cables do not contain equipment grounding conductors.

3x2x2 1/2

types of flexible cords are listed in table

400.4

section in the nec addresses requirements for receptacles installed in wet locations.

406.8 b

the maximum current carrying cap acting capacity of a 6000 watt 120 volt is amps

5

the minimum demand for an electric clothes dryer in a residential load calculation is watts.

5000

7.5kw =watts

7500

both metal piping systems and grounded metal parts in contact with the circulating water shall be bonded together using a copper bonding jumper insulated covered or bare not smaller than

8 awg solid copper

9.75kw= watts

9,750

current in a parallel circuit of three resistivity elements uses which formula

It= I1=1+ i2=i3

a water filtration system is to be connected to a receptacle that is located outdoors. the receptacle cover shown at should be installed

a

when a ground fault occurs the ocpd will trip very quikly if the fault current has an effective ground fault current path a low resistance return path to take to take by way of the equipment grounding conductor the lower this resistance the faster the ocpd opens which of these ground fault current return paths has the least or lowest resistance where run between two metal boxes? the copper equipment grounding conductor is bonded or connected to each box

a 3/4 emt with a 12 awg copper equipment grounding conductor

an electrician should always read to determine any specific electrical requirements.

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

all of these

nec 430.103 requires that a disconnecting means for shall

all of these

when located a receptacle is retired to be gfci protected

all of these

all electrical outlets in residential bedrooms shall be protected by

arc fault circuit interrupters

to regulate humidity a uses a humidistat to turn motor power on and off

dehumidifier humidifier

a receptacle installed is required of a dwelling is used to supply power to a disposal. is the receptacle required to be gfci protected?

either 1 or 2

microwave cooking appliance manufacturers suggest a dedicated branch circuit for the appliance

either 20 15

voltage in a parallel circuit of three resistivity elements uses which formula

et=e1=e2=e3

to better control environmental air in a laundry room a is used to control exhaust fans

humidistat

in general residential loads and devices such as lighting fixtures and receptacles are connected to branch

in parallel

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

installed a minimum of 18 in. deep

several luminaires are installed outside on the covered deck of a house and are connected to a dedicted individual 15 amp 120 volt circuit the lighting is contrlled from a switch located outside near the back door that exits the house the lighting circuit required to be afci protected

is not

is it permitted to connect the metal frame of the attic exhaust fan to the grounded conductor ?

no

when dimming fluorescent lighting, can mixed ballasts or lamps from different manufacturers be controlled from the same dimmer

no

exhaust fan ventilating capability is rated in

none of these

lighting track is never permitted to be cut in the field

portable

power in a parallel circuit of three resistivity elements uses which formula

pt=p1=p2=p3

instructions for most dimmers state that they should not be used to control

receptacle outlets

resistance in a parallel circuit of three resistivity elements uses which formula

rt=1/ {1

which of the following are types of flexible cords

sjo sow so

what is a characteristic of the total resistance in a parallel circuit

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

which of the following is used to regulate the heat in electric clothes dryers

thermostat

what is a characteristic of total current in a parallel circuit

total current is divided among all loads

table 400.4 in the nec can to find

types of flexible cord