First Year Semi Final Exam

What type of lamp is an F32-T8?

fluorescent

The underlined number in this NEMA receptacle designation (_5_-15R) indicates that the receptacle is rated for operation at ____ volts.

125

At 180 VA per outlet, how many outlets can be installed on a 20-ampere circuit (120 volt) if the circuit loading is to remain within its ratings?

13

the maximum number of 12 AWG conductors that are permitted to be installed in a 4 11/16" x 1 1/2"

13

Three 12 AWG circuit conductors that enter through one conduit and exit another conduit can be spliced with wire nuts inside and "LB" if the "LB" is marked with a cubic inch capacity of at least _____ cubic inches.

13.5

The mean lumens of a 150 watt Lucalox high pressure sodium lamp is ______.

13500

When determining the spacing between wall receptacles, the Code section that specifies whether or not the sliding panels in glass doors in a dwelling are counted in the maximum spacing is _______.

210.52 (A)(2)(2)

A single 4" x 2 1/8" x 2 1/8" device box can hold no more than _____ 14 awg conductors.

7

Resistance in a series circuit of three resistive elements uses which formula?

Rt=R1+R2+R3

IN a house, a 20-ampere ,125-volt receptacle installed on the ceiling in a garage for a garage door opener would not require GFCI protection. T/F

false

When lamps with wattages greater than the rating of the luminaire are installed, the light output will be diminished because the luminaire rating is less than that of the lamp. T/F

false

A GFCI receptacle or circuit breaker will "trip" when it senses a difference in the amount of current flowing in the ungrounded conductor versus the amount of current flowing in the_____.

grounded conductor

it is permitted to refuel _____ - powered equipment while it is running. I. diesel II. gasoline III. propane

neither

The average rated life of a PS25 150 watt incandescent lamp is _____ hours when operated at 130 volts.

1000

Along a wall line (not separated by doors), the maximum spacing between receptacles in the dining room in a house is _____ feet.

12

section ____ of the NEC states that small appliance circuits should have no other outlets, except for a clock

210.52 (B)(2) Exception 1

In a dwelling how many receptacles are permitted to be installed on the wall within 3 feet of a bathtub.

as many as the plans indicate

Several duplex receptacles connected to a 20-amp, small appliance branch circuit serving a kitchen and a dining room ______ a. may be rated 15 amperes b. may be rated 20 amperes

neither

How many number 12 AWG conductors may be installed in a 4"x2 1/8" x 1 7/8" device box?

5

For a typical man, a current level as small as ____ amps will cause his muscles to contract prohibiting him from "letting go" of the circuit.

.023

How many F42TBX/841/A/ECO 4-pin triple Biax compact fluorescent laps are required to put out enough initial lumens to equal or exceed that of four 175 watt pulse are multi vapor metal halide lamps? ROund up to the nearest whole number. Initial lumen output values should be used.

16

Section _______ in the NEC requires that a separate 20-amp branch circuit be installed for receptacles in dwelling bathrooms.

210.11 (c)(3)

Section ____ in the NEC specifies the number of 20 amp kitchen counter top receptacle circuits to be installed in a kitchen in a dwelling.

210.11(c)(1)

Guest suites of hotels with permanent cooking provisions shall be required to have AFCI protection fort the bedrooms according to _____ in the NEC.

210.18

According to the EWR prints, what is the total number of receptacles required in the EWR bathrooms?

3

According to the NEC, What is the smallest size box permitted to hold three 12 AWG, six 8 AWG, and four 10 AWG conductors?

4 11/16" x 2 1/8" square

Along a kitchen countertop in a house the maximum spacin between receptacles is _____.

4 feet

A piece of equipment has a nameplate rating of 22.7 KW at 250 volts. How much current will the equipment draw when connected to a 208-volt circuit.

75.5

A golf cart has a bank of six 6 volt batteries to run its 36-volt motor. The motor develops 5.2 horsepower and draws 105 amps. Each battery in the bank is rated for 6 volts and 215 A-hrs. The total capacity of the bank is _____ VA-hrs.

7740

An AFCI breaker is used because it detects ____.

an arcing condition

partially protected areas, such as under the roof of the open front porch of a house, are considered ____ locations according to the NEC

Damp

An equipment grounding conductor is permitted to have _____ insulation. I. gray II. white III. green

III only

Current in a series circuit of three resistive elements uses which formula?

It=I1=I2=I3

LED is an acronym for _____

light emitting diode

The required minimum clearances for a recessed-mounted fluorescent luminaire installed in clothes closets are _____ those for a recessed-mounted incandescent or LED luminaire with a trim ring that has a glass lens.

same as

If a conductor is placed across the terminals of a battery what kind of circuit is created?

short

CO/ALR switches must be used when aluminum building wire is to be terminated. T/F

true

According to the NECthe open circuit voltage for electrical discharge lighting systems shall not exceed ___ volts when installed in dwelling occupancies

1,000

Which NEC section requires residential cord connected appliances to be connected to an equipment grounding conductor?

250.114

Connecting the grounding terminal of a receptacle to a box is covered in Section ____ of the NEC.

250.146

If a ballast is rated to operate at 277 volts but can tolerate (without damaging effects) a +5% to a -7% variation from this rated voltage then this acceptable voltage range is ____to____ V.

290,258

Branch circuit conductors must be rated at 90c if run within ____ inches of a ballast.

3

What is the minimum horizontal clearance for a hanging luminaire from the rim of a bathtub or spa?

3 feet

A receptacle with a 15-20 NEMA configuration should be used on _____- volt circuit.

3 phase 250

The NEC at Section 210.12 requires that _____ protection be provided for all electrical outlets in residential bedrooms.

AFCI

Section 406.5(E) in the NEC permits receptacles to be installed in a face-up position in countertops or similar work places in a dwelling. T/F

False

On construction sites, the NEC requires that all 125-volt, single phase,15-,20- and 30-amp temporary receptacles have _____ protection.

GFCI

If the voltage is raised in a simple circuit, what will the current do?

Go up

An AFCI circuit breaker can be used instead of a standard circuit breaker and will trip when _____ occurs on the circuit. I. an overload II. a short circuit III. an arcing condition

I or II or III

For a dwelling, a 125-volt, 20-ampere receptacle installed outside is required to be I. GFCi protected II. weatherproof III. a minimum of 3 feet above grade

I or II or III

Where installed in conduit, the following colors of insulation or marking are permitted to identify "hot" phase conductors. I. black, red, and blue II. brown, orange and yellow III. pink, black and blue

I or II or III

When installing receptacles in a bathroom in a house, the receptacles are required to be _____. I. GFCI protected II. AFCI protected III. of the tamper resistant type

I or III

All 15 of 20-ampere, 125-volt receptacles installed to serve dwelling kitchen countertops require GFCI protection.

True

When giving someone's vehicle a "jump start" using jumper cables, the last connection made is to_____.

a grounded surface in the vehicle with the dead battery

Where are electrical receptacle outlets not permitted to be located?

above certain electric baseboard heaters

Aerial lifts can be mortified for the current job if_______.

you have written permission from the manufacturer

NEC section ___ requires that all 125-colt, single-phase 15- and 20-ampere receptacles used for temporary construction power be GFCI protected.

590.6 (A)

A blueprint is drawn to a scale of 1 inch+10 feet. The building width measure 6 inches on the blueprint. The building is _____ feet wide.

60

The Code section that addresses sensor (automatic) control of lighting in a restaurant bathroom is _____.

N/A

A luminaire has one blue wire and one white wire for field connection. When using cable (NM, AC, or MC for example), the wire connected to the blue wire from the luminaire ______. a. can be white with colored tape b. must have colored insulation ( not green or white)

a or b

In a suspended ceiling system, lay-in luminaires shall be securely fastened to the ceiling framing member by mechanical means such as I.listed clips II.bolts III. rivets IV. screws

any of these

Convenience receptacles that are installed in bedrooms in a house are required to be protected by a(n)______

arc-fault circuit interrupter

GfCi protected receptacles______ permitted to be installed within a tub or shower space.

are not

Infrared radiation ______ be seen by the human eye. can or can not

can not

The NEC ____ specify the maximum number of lighting fixtures that can be connected to a 120-volt branch circuit in a dwelling A. does b. does not

does not

Section 250.110 in the NEC requires all ______ non-current carrying metal parts of electrical equipment in bathrooms to be grounded.

exposed

in a dwelling kitchen lighting ____ permitted to be supplied by either of the two 20-ampere small appliance circuits required for the kitchen and dining room area

is not

The 125-volt, 20-ampere receptacles installed to serve kitchen countertops are required to have GFCI protection _____

under all circumstances

The "hot" conductor of a circuit is referred to as the ___ conductor in the NEC.

ungrounded

A freezer is to be connected to a single-receptacle in the garage of a home. Is this receptacle required to be GFCI protected? Y/N

yes

Does the NEC have GFCI requirements for 120-volt receptacles along a wet-bar sink countertop in a conference room in an office building? Y/N

yes

Does the NEC permit an MC cable that is 46 feet in length and properly secured to be installed between a 4" -square box and a 2-by-4 lay-in luminaire? Y/N

yes

Is it permitted to control a 120-volt incandescent (tungsten filament) lighting circuit with a switch rated for 15 A and 120-277 V? The circuit has 9 fixtures and each fixture will have a 200 W, 120-V lamp installed in it.

yes

A 10,000 sq ft dwelling has a hallway that is 80 feet in length. The minimum number of receptacles required by the NEC in this hallway is ______.

1

Although not limited to 80% by the NEC, if 20-amp residential circuits are to be loaded only up to their ratings, how many 20-ampere, 120-volt circuits will be required? the homeowner wants fifteen 150 watt light fixtures and twenty 75 watt fixtures.

2

How many single receptacles can be installed in a two-gang box that is made using two single gang boxes that are ganged together ?

2

A PS30 200 watt incandescent lamp delivers _______ watts when operated at 130 volts

200

An incandescent lamp consumes ______ of power at 110 volts where the manufacturer's stamp on the lamp shows: 100 watts @ 130 volts

71.6

For a branch circuit supplying several fluorescent luminaires,in-line fuse holders with fuses that are installed in one of the luminaire enclosures will protect the _____ against overload. I. ballast II. branch circuit

I only

In addition to other parts, a luminaire consists of a _____. I. lampholder II. lamp

I or II

undesirable "noise" on a circuit can cause computers to "lockup," lose their memory, and/or cause erratic performance of the computer. This "noise" could be caused by ____ I. EMI II. RFI

I or II

Ballasts should be disposed of______. I. in the trash II. at a hazardous waste incinerator III. at a chemical waste landfill

I or II only

A GFCI does not ______. I. protect against shock when a person touches two circuit conductors II. sense short circuits III. sense arcing between hot and neutral conductors

I or II or III

When batteries are connected in series, the _____ supplied to the connected load increases. I. Current II. Voltage

II

Section 210.8 (A)(5) of the NEC states that a receptacle located in ____ in a house shall be GFCI protected. I. a finished basement II. an unfinished basement III. a workroom in an unfinished basement

II or III

Although a box has been selected to meet the minimjum 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 this potential problem.

Section 314.24

Which of the problems listed below could cause a fluorescent lamp to have trouble starting? A. a broken lamp holder B. an air temperature of around 50 F or less C. a lamp that is installed with one of the bi-pins outside the lampholder D. a luminaire that is not properly grounded

all of these

Isolated ground receptacles are identified by _____.

an orange triangle

in a dwelling which of the following are permitted to be connected to one of the small appliance circuits? a. a dishwasher b. a toaster c. a garbage disposal d. all of these e. none of these

b

A _____ can be a type of GFCI protection device.

circuit breaker

When a single receptacle is connected to a branch circuit (the circuit has no other loads), the receptacle must have an ampere rating _____ the ampere rating of the OCP protecting the branch circuit.

greater than or equal to

When conductors are run into a box and a luminaire is installed, this box is a(n)_______ per the NEC definition.

lighting outlet

The quantity of light emitted by a source (lamp) is measured in _____.

lumens

Since I=E/R then a lamp that is operated 130 volts will draw ____ current than when operated at 120 volts I. Less II. More III. The same

more

is it permitted by the NEC to control the lighting in a stairwell with a single pole switch located at the foot of the stairs? the stair well is located in a home you are building and allows access between the first and second floors. Y/N

no

section 210.11 (B) in the NEC requires that loads be evenly proportioned (or balanced) among the different circuits in a panelboard. This means that when everything connected to all circuits is ON then the current in ____ feeder conductors are equal, or as close as possible

the two hot

An integral thermal protector for recessed luminaires will automatically restore power once the luminaire has cooled. T/F

true

Objects viewed under the light produced by sodium lamp have colors that are distorted or not the same color as might be seen in direct sunlight. T/F

true

Operating only one lamp on a two-lamp fluorescent ballast will damage the ballast. T/F

true

The grounding terminal screw is electrically and mechanically connected to the metal yoke on a hospital grade receptacle. T/F

true

A single-pole, single-throw switch has _____ screw terminals for the connection of current-carrying circuit conductors.

two