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NEC Code 460: Capacitors Quiz Questions Answers
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Question 1 of 10
1. Question
1 pointsThe residual voltage of a capacitor shall be reduced to __ volts, nominal, or less within 1 minute after the capacitor is disconnected from the source of supply.
Correct
Please Refer: NEC Code 460.6(A)
Incorrect
Please Refer: NEC Code 460.6(A)
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Question 2 of 10
2. Question
1 pointsThe ampacity of capacitor circuit conductors shall not be less than ___ percent of the rated current of the capacitor.
Correct
Please Refer: NEC Code 460.8
Incorrect
Please Refer: NEC Code 460.8
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Question 3 of 10
3. Question
1 pointsThe ampacity of conductors that connect a capacitor to the terminals of a motor or to motor circuit conductors shall not be less than___ the ampacity of the motor circuit conductors and not less than ___ % of the rated current of capacitors
Correct
Please Refer: NEC Code 460.8
Incorrect
Please Refer: NEC Code 460.8
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Question 4 of 10
4. Question
1 pointsThe rating or setting of the overcurrent device provided in each ungrounded conductor for each capacitor bank shall be as high as practicable.
Correct
Please Refer: NEC Code – 460.8(B)
Incorrect
Please Refer: NEC Code – 460.8(B)
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Question 5 of 10
5. Question
1 pointsWhen a capacitor is connected on the load side of a motor overload protective device a separate over current protection device for capacitor shall be provided
Correct
Please Refer: NEC Code – 460.8(B) Exp
Incorrect
Please Refer: NEC Code – 460.8(B) Exp
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Question 6 of 10
6. Question
1 pointsThe rating of the disconnecting means provided for the capacitor shall not be less than ___percent of the rated current of the capacitor
Correct
Please Refer: NEC Code 460.8(C)(3)
Incorrect
Please Refer: NEC Code 460.8(C)(3)
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Question 7 of 10
7. Question
1 pointsIn case of capacitor connected to the load side of the motor overload devices, the rating or
setting of the motor overload device shall be based on the improved power factor of the motor circuit.Correct
Please Refer: NEC Code 460.9
Incorrect
Please Refer: NEC Code 460.9
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Question 8 of 10
8. Question
1 pointsA means shall be provided to reduce the residual voltage of a capacitor to ___ volts or less within 5 minutes after the capacitor is disconnected from the source of supply.
Correct
Please Refer: NEC Code 460.28
Incorrect
Please Refer: NEC Code 460.28
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Question 9 of 10
9. Question
1 pointsWhy it is required to drain off the stored charge in a capacitor after the supply circuit has been opened.
Correct
Incorrect
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Question 10 of 10
10. Question
1 pointsCapacitor cases shall be connected to the equipment grounding conductor.
Correct
Please Refer: NEC Code 460.10
Incorrect
Please Refer: NEC Code 460.10