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NEC Code Questions: Feeders (215)
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Question 1 of 10
1. Question
1 pointsGround fault protection of a feeder equipment is not required if protection is provided on the upstream feeders or at the service:
Correct
Please Refer: NEC Code 215.10
Incorrect
Please Refer: NEC Code 215.10
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Question 2 of 10
2. Question
1 pointsFeeder neutral or grounded conductors of voltage rating not more than 600V, that do not connect to the terminals of an over current protective device shall be sized based on ______ of the continuous load and noncontinuous load
Correct
Please Refer: NEC Code 215.2(A) Exp-2
Incorrect
Please Refer: NEC Code 215.2(A) Exp-2
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Question 3 of 10
3. Question
1 pointsAccording to NEC Code, reasonable efficiency can be achieved if the total sum of voltage drop of branch circuit plus feeder is within ______ of the rated voltage
Correct
Please Refer NEC Code 215.2(A) (4)
Incorrect
Please Refer NEC Code 215.2(A) (4)
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Question 4 of 10
4. Question
1 pointsFor the feeders of voltage level above 600V, the ampacity of supplying both transformers and utilization equipment shall not be less than transformer name plate rating and _____ of the designed potential of the load of the equipment meant to supply
Correct
Please Refer NEC Code 215.2 (B)(2)
Incorrect
Please Refer NEC Code 215.2 (B)(2)
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Question 5 of 10
5. Question
1 pointsWhich of the following statement is correct:
(1) All feeder conductors using common neutral conductor when installed in metal raceways shall be grouped together:
(2) The above said grouping is made in order to avoid induction heating of surroundingsCorrect
Please Refer: NEC Code 214.4(B)
Incorrect
Please Refer: NEC Code 214.4(B)
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Question 6 of 10
6. Question
1 pointsQualified persons are permitted to carryout maintenance, monitoring and servicing of the system which has voltage rating over _____ Volts
Correct
Please Refer NEC Code 215.2(B)(3)
Incorrect
Please Refer NEC Code 215.2(B)(3)
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Question 7 of 10
7. Question
1 pointsFeeder having voltage rating between 150V to ground and 600V phase to phase which are solidly grounded to wye connected electrical system and having disconnect rating 1000A and above shall be provided with GFP Equipment
Correct
Please Refer: NEC Code 215.10
Incorrect
Please Refer: NEC Code 215.10
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Question 8 of 10
8. Question
1 pointsFeeders shall be derived from auto-transformer without connecting to grounded conductors where voltage transformation from nominal 480 to nominal 277V or from 277V nominal to 480V nominal
Correct
Please Refer: NEC Code 215.11 Exp-2
Incorrect
Please Refer: NEC Code 215.11 Exp-2
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Question 9 of 10
9. Question
1 pointsWhich of the following methods are permitted to act as identification means for ungrounded feeder conductors in premises wiring:
Correct
Please Refer NEC Code 215.12 (C)
Incorrect
Please Refer NEC Code 215.12 (C)
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Question 10 of 10
10. Question
1 pointsWhich of the Statement related to identification of grounded feeder conductors are true:
- Conductors that have continuous grey outer finish
- Three continuous white stripes along the conductor’s entire length on other than green insulation.
Correct
Please Refer NEC Code 215.12(A)
Incorrect
Please Refer NEC Code 215.12(A)