Exam 3: General Requirements for Conductors

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Several NEC sections contain the requirement to size conductors and overcurrent devices at 100 percent of the noncontinuous loads plus ____ percent of the continuous loads.

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Question 1

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Why is it important to place all conductors of the same circuit in the same raceway?

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Question 2

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When all conductors of the same alternating-current circuit are in the same raceway, the magnetic flux around each conductor cancels out the magnetic flux of the other circuit conductors. If the flux does not cancel, induction heating of a metal raceway or metal-jacketed cable will occur. Also, if the conductors of a circuit were in different raceways, in the event of a fault, the impedance of the circuit would be higher than if all of the circuit conductors of the circuit were in the same raceway. This will lower the current flow and cause overcurrent devices to open more slowly, which is undesirable.

The total voltage drop in the feeder and branch circuits should not exceed ____ percent.

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Question 3

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Where would insulation with high-temperature rating be needed and why?

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Question 4

Which factor does not generally influence the resistance of a conductor?

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Question 5

Branch-circuit conductors are required to have an ampacity not less than ____ percent of the load to be served.

(Multiple Choice)

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Question 6

What is the purpose of conductor insulation with multiple ratings?

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Question 7

What does AWG measure?

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Question 8

Which is an example of a continuous load?

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Question 9

Explain what is meant by wet locations with some examples.

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Question 10

Dim or flickering lights may be caused by problems ____ if the voltage at the line-side terminals of the main service is satisfactory.

(Multiple Choice)

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Question 11

Adjustment factors must be used if more than ____ conductors are grouped together in a conduit or cable without maintaining spacing.

(Multiple Choice)

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Question 12

____ are used in conductor selection if the ambient temperature where the conductors are located is above or below 86 degrees F.

(Multiple Choice)

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Question 13

What is a typical example of thermoplastic insulation?

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Question 14

For equipment rated at 100 amperes or less, the ampacity values found in the ____ column of NEC Table 310.16 are generally to be used.

(Multiple Choice)

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Question 15

What is thermoset insulation?

(Essay)

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Question 16

Showing 1 - 16 of 16

Several NEC sections contain the requirement to size conductors and overcurrent devices at 100 percent of the noncontinuous loads plus ____ percent of the continuous loads.

Why is it important to place all conductors of the same circuit in the same raceway?

The total voltage drop in the feeder and branch circuits should not exceed ____ percent.

Where would insulation with high-temperature rating be needed and why?

Which factor does not generally influence the resistance of a conductor?

Branch-circuit conductors are required to have an ampacity not less than ____ percent of the load to be served.

What is the purpose of conductor insulation with multiple ratings?

What does AWG measure?

Which is an example of a continuous load?

Explain what is meant by wet locations with some examples.

Dim or flickering lights may be caused by problems ____ if the voltage at the line-side terminals of the main service is satisfactory.

Adjustment factors must be used if more than ____ conductors are grouped together in a conduit or cable without maintaining spacing.

____ are used in conductor selection if the ambient temperature where the conductors are located is above or below 86 degrees F.

What is a typical example of thermoplastic insulation?

For equipment rated at 100 amperes or less, the ampacity values found in the ____ column of NEC Table 310.16 are generally to be used.

What is thermoset insulation?

Commercial Building Plans and Specifications

Reading Electrical Working Drawings--Entry Level

Branch Circuits

Switches and Receptacles

Wiring Methods

Motor and Appliance Circuits

Feeder Installation and Load Calculation

Special Systems

Working Drawings--Upper Level

Special Circuits Owners Circuits

Panelboard Selection and Installation

The Electric Service and Grounding

Lamps and Ballasts for Lighting

Luminaires

Emergency, Legally Required Standby, and Optional Standby Power Systems

Overcurrent Protection: Fuses and Circuit Breakers

Short-Circuit Calculations and Coordination of Overcurrent Protective Devices

Equipment and Conductor Short-Circuit

Low-Voltage Remote Control

The Cooling System

Commercial Utility-Interactive Photovoltaic Systems

Filters

Exam 3: General Requirements for Conductors

Several NEC sections contain the requirement to size conductors and overcurrent devices at 100 percent of the noncontinuous loads plus ____ percent of the continuous loads.

​ Why is it important to place all conductors of the same circuit in the same raceway?

The total voltage drop in the feeder and branch circuits should not exceed ____ percent.

Where would insulation with high-temperature rating be needed and why?

Which factor does not generally influence the resistance of a conductor?

Branch-circuit conductors are required to have an ampacity not less than ____ percent of the load to be served.

​ What is the purpose of conductor insulation with multiple ratings?

What does AWG measure?

Which is an example of a continuous load?

Explain what is meant by wet locations with some examples.

Dim or flickering lights may be caused by problems ____ if the voltage at the line-side terminals of the main service is satisfactory.

Adjustment factors must be used if more than ____ conductors are grouped together in a conduit or cable without maintaining spacing.

​ ____ are used in conductor selection if the ambient temperature where the conductors are located is above or below 86 degrees F. ​

What is a typical example of thermoplastic insulation?

For equipment rated at 100 amperes or less, the ampacity values found in the ____ column of NEC Table 310.16 are generally to be used.

​ What is thermoset insulation?

Commercial Building Plans and Specifications

Reading Electrical Working Drawings--Entry Level

Branch Circuits

Switches and Receptacles

Wiring Methods

Motor and Appliance Circuits

Feeder Installation and Load Calculation

Special Systems

Working Drawings--Upper Level

Special Circuits Owners Circuits

Panelboard Selection and Installation

The Electric Service and Grounding

Lamps and Ballasts for Lighting

Luminaires

Emergency, Legally Required Standby, and Optional Standby Power Systems

Overcurrent Protection: Fuses and Circuit Breakers

Short-Circuit Calculations and Coordination of Overcurrent Protective Devices

Equipment and Conductor Short-Circuit

Low-Voltage Remote Control

The Cooling System

Commercial Utility-Interactive Photovoltaic Systems

Filters

Why is it important to place all conductors of the same circuit in the same raceway?

What is the purpose of conductor insulation with multiple ratings?

____ are used in conductor selection if the ambient temperature where the conductors are located is above or below 86 degrees F.

What is thermoset insulation?