Question 1

General-purpose receptacles are ____.
A) continuous loads
B) not allowed in commercial spaces
C) not included in the total load
D) not continuous loads

Accepted Answer

General-purpose receptacles are not considered continuous loads because they are typically used for temporary or intermittent purposes such as plugging in a lamp, phone charger, or computer. Continuous loads, on the other hand, are appliances or equipment that are designed to operate continuously or are used for more than 3 hours at a time, such as refrigerators or air conditioners.

Question 2

To calculate multiple noncoincident loads used simultaneously, the ____ load(s) that will be used at one time is used in calculating the total feeder/service load.
A) average
B) largest
C) medial
D) smallest

Accepted Answer

To ensure that the feeder/service is capable of handling the maximum load, the largest noncoincident load that may operate simultaneously should be used to calculate the total feeder/service load.

Question 3

Conductors ____ AWG and larger can be connected in parallel (electrically joined at both ends to form a single conductor).
A) 1/0
B) 1/2
C) 1/3
D) 1/4

Accepted Answer

According to the National Electric Code (NEC), conductors 1/0 AWG and larger can be connected in parallel. Option A is the only one that fits this criteria.

Question 4

Feeder conductors and overcurrent protection shall be sized at 100% of noncontinuous loads plus ____% of continuous loads.
A) 50
B) 75
C) 100
D) 125

Accepted Answer

Feeder conductors and overcurrent protection must be sized at 100% of noncontinuous loads plus 125% of continuous loads to safely handle the potential increased load and to prevent overheating or damage.

Question 5

Fractions of an ampere 0.5 and higher are ____, while fractions less than 0.5 are dropped.
A) rounded up
B) applied exactly
C) rounded down
D) dropped

Accepted Answer

Fractions of an ampere 0.5 and higher are rounded up to the nearest whole number.

Question 6

The demand factor for three pieces of equipment is 90%; for four pieces, ____%; and for five pieces, 70%, for more than five pieces of equipment is 65%.
A) 60
B) 70
C) 80
D) 90

Accepted Answer

The demand factor for four pieces of equipment is not explicitly given, but it should logically fall between the demand factors for three and five pieces, which are 90% and 70%, respectively. Therefore, 80% is a reasonable estimate.

Question 7

Receptacle outlets are calculated at a minimum of ____ volt-amperes for each single (or multiple) receptacle on one yoke (or strap).
A) 180
B) 190
C) 195
D) 200

Accepted Answer

The answer of Receptacle outlets are calculated at a minimum...

Question 8

Where the grounding electrode conductor or bonding jumper connects to a single or multiple rod, pipe, or plate electrode(s) or any combination thereof, or does not extend on to other types of electrodes that require a larger size conductor, the grounding electrode conductor shall not be required to be larger than ____.
A) 2 AWG copper wire or 4 AWG aluminum
B) 4 AWG copper wire or 6 AWG aluminum
C) 6 AWG copper wire or 4 AWG aluminum
D) 6 AWG copper wire or 8 AWG aluminum

Accepted Answer

According to NEC 250.66, where the grounding electrode conductor or bonding jumper connects to a single or multiple rod, pipe, or plate electrode(s) or any combination thereof, and does not extend on to other types of electrodes that require a larger size conductor, the grounding electrode conductor shall not be required to be larger than 6 AWG copper wire or 4 AWG aluminum.

Question 9

The feeder (or service) neutral load is the ____ of the load determined by Article 220.
A) Maximum balance
B) minimum unbalance
C) maximum unbalance.
D) minimum unbalance,

Accepted Answer

According to Article 220, the neutral load for a feeder or service is calculated as the maximum unbalance of the load.

Question 10

In banks or office buildings, the receptacle load shall be calculated to be the larger of (1) the calculated load from 220.14(I), or (2) ____ volt-ampere per square foot.
A) 1
B) 6
C) 8
D) 10

Accepted Answer

The answer of In banks or office buildings, the receptacle...

Question 11

Three-phase voltage is found by multiplying the voltage (single-phase) by ____.
A) 1.327
B) 1.732
C) 1.832
D) 1.914

Accepted Answer

Three-phase voltage is found by multiplying the voltage (single-phase) by the square root of three (√3), which is approximately 1.732. Therefore, the correct answer is B) 1.732.

Question 12

In calculating general lighting load, each floor's area shall be calculated using the building's (or area's) ____.
A) interior dimensions
B) outside dimensions
C) cross-sectional dimensions
D) cubic dimensions

Accepted Answer

In calculating general lighting load, each floor's area is calculated using the building's (or area's) outside dimensions. This approach ensures that the entire footprint of the building is considered, including wall thicknesses and other structural elements that might be excluded if interior dimensions were used.

Question 13

A load where the maximum current is expected to continue for ____ or more is a continuous load.
A) one hour
B) two hours
C) three hours
D) four hours

Accepted Answer

The answer of A load where the maximum current is...

Question 14

In determining the load of the highest-rated motor, the greater of either the ampere rating from 430.22(E) or the largest continuous-duty motor full-load current multiplied by ____ shall be used in the summation.
A) 1
B) 1.25
C) 1.50
D) 1.75

Accepted Answer

According to NEC 430.24(A), the load of the highest-rated motor is calculated by adding the full-load current of each motor plus the greater of either the ampere rating from 430.22(E) or the largest continuous-duty motor full-load current multiplied by 1.25. Therefore, the correct answer is choice B - 1.25.

Question 15

The volt-ampere unit load for a bank is ____.
A) 1.5
B) 2.5
C) 3.0
D) 3.5

Accepted Answer

The answer of The volt-ampere unit load for a bank...

Question 16

The load calculation form results (overcurrent protection and conductors) represent ____ requirement.
A) the complete
B) only a minimum
C) the first part of the
D) the written portion of the

Accepted Answer

The load calculation form results represent only a minimum requirement for overcurrent protection and conductor sizing. The actual installation may require additional considerations and adjustments, such as voltage drop, ambient temperature, and specific equipment requirements.

Question 17

Sign and outline lighting outlets in commercial buildings are computed at a minimum of ____ volt-amperes.
A) 600
B) 800
C) 1000
D) 1200

Accepted Answer

The answer of Sign and outline lighting outlets in commercial...

Quiz 13: Nondwelling Load Calculations

General-purpose receptacles are ____.

To calculate multiple noncoincident loads used simultaneously, the ____ load(s) that will be used at one time is used in calculating the total feeder/service load.

Conductors ____ AWG and larger can be connected in parallel (electrically joined at both ends to form a single conductor) .

Feeder conductors and overcurrent protection shall be sized at 100% of noncontinuous loads plus ____% of continuous loads.

Fractions of an ampere 0.5 and higher are ____, while fractions less than 0.5 are dropped.

The demand factor for three pieces of equipment is 90%; for four pieces, ____%; and for five pieces, 70%, for more than five pieces of equipment is 65%.

Receptacle outlets are calculated at a minimum of ____ volt-amperes for each single (or multiple) receptacle on one yoke (or strap) .

The feeder (or service) neutral load is the ____ of the load determined by Article 220.

In banks or office buildings, the receptacle load shall be calculated to be the larger of (1) the calculated load from 220.14(I) , or (2) ____ volt-ampere per square foot.

Three-phase voltage is found by multiplying the voltage (single-phase) by ____.

In calculating general lighting load, each floor's area shall be calculated using the building's (or area's) ____.

A load where the maximum current is expected to continue for ____ or more is a continuous load.

In determining the load of the highest-rated motor, the greater of either the ampere rating from 430.22(E) or the largest continuous-duty motor full-load current multiplied by ____ shall be used in the summation.

The volt-ampere unit load for a bank is ____.

The load calculation form results (overcurrent protection and conductors) represent ____ requirement.

Sign and outline lighting outlets in commercial buildings are computed at a minimum of ____ volt-amperes.