2023 NEC Article 710 – 728 - All Star Training

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Question 1 of 10

1. Question
Access to electrical equipment shall not be denied by _____________ that prevents removal of panels, including suspended ceiling panels. (725.21)
- a reduction of wires and cables
- an accumulation of conductors
- an accumulation of wires and cables
- an accumulation of conductors
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Question 2 of 10

2. Question
Cables and conductors installed exposed on the surface of ceilings and sidewalls should be secured by all of the following EXCEPT: (722.24)
- Straps
- Lampholders
- Staples
- Hangers
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Question 3 of 10

3. Question
Class 1 circuits shall be supplied from a source with what rated output? (724.40(A))
- Less than 15 volts and 500 volt-amperes
- Greater than 30 volts and 1000 volt-amperes
- Not more than 30 volts and 1000 volt-amperes
- Greater than 60 volts and 2000 volt-amperes
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Question 4 of 10

4. Question
Power sources other than transformers shall be protected by overcurrent devices rated ________ percent of the volt-ampere rating of the source divided by the rated voltage. (724.40(B))
- at not more than 167
- greater than 167
- at not more than 75
- less than 50
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Question 5 of 10

5. Question
Which of the following is Not true related to Class 1 circuits? (724.48(B)(1))
- Shall be permitted to occupy the same cable, enclosure, or raceway without a barrier only where the equipment powered is functionally associated.
- Shall be permitted to be installed together with the conductors of power-limited fire alarm.
- Shall be permitted to be installed with medium power network-powered broadband communications circuits where separated by a barrier.
- Shall be permitted to be installed together with the conductors of electric light.
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Question 6 of 10

6. Question
All the following are listed equipment marked to identify the Class 2 or Class 3 power source EXCEPT: 725.60(A)
- Thermocouple
- Marking
- Limited voltage/current
- Storage battery source
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Question 7 of 10

7. Question
Class 2 cables shall have a voltage rating of not less than _______ volts. Class 3 cables shall have a voltage rating of not less than ________ volts. (722.179(A)(14))
- 100, 150
- 150, 500
- 150, 300
- 300, 1000
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Question 8 of 10

8. Question
In addition to the requirements of the Article 724, circuits and equipment shall comply with which of the follow? (724.3)
- Class 1 circuits installed in ducts, plenums, and other spaces used for environmental air shall comply with 392
- Vertical installations of circuit integrity (CI) cables and conductors installed in a raceway or conductors and cables of electrical circuit protective systems shall comply with 300.19
- Class 1 circuits shall be installed in any hazardous (classified) location
- Bushing shall not be installed where cables emerge from raceways used for mechanical support or protection in accordance with 300.15(C)
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Question 9 of 10

9. Question
Power sources other than transformers shall be protected by overcurrent devices rated at not more than ________ of the volt-ampere rating of the source divided by the rated voltage. (724.40(B))
- 100 percent
- 125 percent
- 138 percent
- 167 percent
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Question 10 of 10

10. Question
Which of the following is false about Class 1 overcurrent device location? (724.45)
- Class 1 circuit conductors needs to be tapped where the overcurrent device protecting the circuit conductor is sized to protect the tap conductor.
- Overcurrent devices shall be located at the point where the conductor to be protected receives its supply.
- Class 1 circuit conductors shall be permitted to be tapped, without overcurrent protection at the tap, where the overcurrent device protecting the circuit conductor is sized to protect the tap conductor.
- Class 1 circuit conductors 14 AWG and larger that are tapped from the load side of the overcurrent protective device(s) of a controlled light and power circuit shall require only short-circuit and ground-fault protection and shall be permitted to be protected by the branch-circuit overcurrent protective device(s) where the rating of the protective device(s) is not more than 300 percent of the ampacity of the Class 1 circuit conductor.
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