Question 1

Multiplying voltage by amperage produces ____.

Accepted Answer

A)   kilo-volts (kV) 
B)   kilo-watts (kW) 
C)   kilo-amperes (k
A)  
D)   volt-amperes (V
A)  E) A) and C)
F) B) and C) D

Question 2

No derating is allowed when there are only one, two, or three ____ appliances.

Accepted Answer

A)   kitchen
B)   laundry
C)   fastened-in-place
D)   smallE) A) and B)
F) None of the above C

Question 3

A dwelling unit must have at least ____ small-appliance branch circuit(s) .

Accepted Answer

A)   one
B)   two
C)   three
D)   fourE) A) and C)
F) None of the above

Question 4

____ are not included in calculating receptacle loads for appliances.

Accepted Answer

A)   Air-conditioning systems
B)   Counter-mounted cooking units
C)   Clothes dryers
D)   Wall-mounted ovensE) None of the above
F) A) and B)

Question 5

The ____ is not an important piece of information to gather before performing load calculations.

Accepted Answer

A)   dwelling's total square-foot (ft2)  area
B)   number of laundry circuits that will be installed
C)   fastened-in-place appliances that will be installed
D)   location of circuit breakersE) A) and B)
F) A) and C)

Question 6

A clothes dryer neutral load on a feeder can be calculated at ____%.

Accepted Answer

A)   20
B)   50
C)   70
D)   75E) A) and B)
F) A) and C)

Question 7

____ must be included when calculating a dwelling unit service.

Accepted Answer

A)   Detached garage space loads
B)   Crawl space branch circuits
C)   Refrigeration equipment loads
D)   Small-appliance branch circuitsE) A) and C)
F) None of the above

Question 8

The minimum size grounding electrode conductor is ____ AWG copper (or 4 AWG aluminum) .

Accepted Answer

A)   2
B)   4
C)   6
D)   8E) B) and C)
F) C) and D)

Question 9

A scale ruler is used in ____.

Accepted Answer

A)   determining the number of outlets
B)   determining outlet ampacity
C)   determining the location of outlets
D)   converting unitsE) B) and C)
F) None of the above

Question 10

Horsepower ratings must be converted to ____ before they can be added to the load calculation form.

Accepted Answer

A)   kilo-volts (kV) 
B)   kilo-watts (kW) 
C)   volt-amperes (V
A)  
D)   kilo-amperes (k
A)  E) None of the above
F) B) and C)

Question 11

The ____, including the strip heat and blower motor, is necessary information for calculating loads.

Accepted Answer

A)   heat sink percentage
B)   total wattage in kilo-watts
C)   total volt-ampere load
D)   British Thermal Units (BTUs) E) All of the above
F) C) and D)

Question 12

In outdoor applications, ____ grounding electrode conductors must not be installed within 18 in.(450 mm)  of the earth.

Accepted Answer

A)   stainless steel
B)   copper
C)   aluminum
D)   compositeE) A) and B)
F) None of the above

Question 13

For the purpose of the standard method load calculation for a one-family dwelling, the terms neutral and ____ are synonymous.

Accepted Answer

A)   load balanced
B)   grounded
C)   nonpositive
D)   chargedE) A) and B)
F) C) and D)

Question 14

The exact nameplate rating of the clothes dryer, even if less than ____ volt-amperes should be used in load calculations.

Accepted Answer

A)   1000
B)   2500
C)   5000
D)   7000E) None of the above
F) B) and C) C

Question 15

The smaller of two (or more)  ____ loads can be omitted, as long as they are never energized simultaneously.

Accepted Answer

A)   noncoincident
B)   nonsingular
C)   incidental
D)   compressorE) A) and B)
F) A) and C)

Question 16

A feeder is defined as all circuit conductors between the ____ containing fuses or breakers that feed branch circuits.

Accepted Answer

A)   main power source and the junction box
B)   service disconnecting means and the panelboard
C)   main power source and the fuse box
D)   auxiliary service line and the panelboardE) C) and D)
F) A) and D)

Question 17

Load calculations must be performed in order to determine the ____.

Accepted Answer

A)   size of circuit breakers
B)   size of services and feeders
C)   voltage drop across all circuits
D)   placement of fuse boxesE) A) and B)
F) B) and D)

Question 18

____ are not included in the calculated floor area of dwelling units.

Accepted Answer

A)   Kitchen spaces
B)   Laundry/utility rooms
C)   Open porches
D)   Roofed overhangsE) All of the above
F) A) and C)

Question 19

Each laundry branch circuit is calculated at _____.

Accepted Answer

A)   no more than 1500 volt-amperes
B)   no less than 1500 volt-amperes
C)   no more than 1000 volt-amperes
D)   no less than 1000 volt-amperesE) All of the above
F) C) and D)

Question 20

For a service rated 100 through 400 A, the service conductors supplying the entire load associated with a one-family dwelling shall be permitted to have an ampacity not less than _____% of the service rating.

Accepted Answer

A)   68
B)   83
C)   100
D)   112E) B) and D)
F) None of the above

Exam 8: Load Calculations

Multiplying voltage by amperage produces ____.

Correct AnswerverifiedD

No derating is allowed when there are only one, two, or three ____ appliances.

Correct AnswerverifiedC

A dwelling unit must have at least ____ small-appliance branch circuit(s) .

Correct AnswerverifiedShow Answer

____ are not included in calculating receptacle loads for appliances.

Correct AnswerverifiedShow Answer

The ____ is not an important piece of information to gather before performing load calculations.

Correct AnswerverifiedShow Answer

A clothes dryer neutral load on a feeder can be calculated at ____%.

Correct AnswerverifiedShow Answer

____ must be included when calculating a dwelling unit service.

Correct AnswerverifiedShow Answer

The minimum size grounding electrode conductor is ____ AWG copper (or 4 AWG aluminum) .

Correct AnswerverifiedShow Answer

A scale ruler is used in ____.

Correct AnswerverifiedShow Answer

Horsepower ratings must be converted to ____ before they can be added to the load calculation form.

Correct AnswerverifiedShow Answer

The ____, including the strip heat and blower motor, is necessary information for calculating loads.

Correct AnswerverifiedShow Answer

In outdoor applications, ____ grounding electrode conductors must not be installed within 18 in.(450 mm) of the earth.

Correct AnswerverifiedShow Answer

For the purpose of the standard method load calculation for a one-family dwelling, the terms neutral and ____ are synonymous.

Correct AnswerverifiedShow Answer

The exact nameplate rating of the clothes dryer, even if less than ____ volt-amperes should be used in load calculations.

Correct AnswerverifiedC

The smaller of two (or more) ____ loads can be omitted, as long as they are never energized simultaneously.

Correct AnswerverifiedShow Answer

A feeder is defined as all circuit conductors between the ____ containing fuses or breakers that feed branch circuits.

Correct AnswerverifiedShow Answer

Load calculations must be performed in order to determine the ____.

Correct AnswerverifiedShow Answer

____ are not included in the calculated floor area of dwelling units.

Correct AnswerverifiedShow Answer

Each laundry branch circuit is calculated at _____.

Correct AnswerverifiedShow Answer

For a service rated 100 through 400 A, the service conductors supplying the entire load associated with a one-family dwelling shall be permitted to have an ampacity not less than _____% of the service rating.

Correct AnswerverifiedShow Answer

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C

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