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NEC Code 230: Overhead and Underground Service Conductors Quiz
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Question 1 of 12
1. Question
1 pointsIndividual Overhead Service Conductors shall be insulated:
Correct
Please Refer: NEC Code 230.22
Incorrect
Please Refer: NEC Code 230.22
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Question 2 of 12
2. Question
1 pointsThe minimum size of the service conductors shall not be smaller than ___ copper
Correct
Please Refer: NEC Code 230.23(B)
Incorrect
Please Refer: NEC Code 230.23(B)
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Question 3 of 12
3. Question
1 pointsOverhead Service Conductors supplying only limited loads of a single branch circuits such as small controlled water heaters and similar loads shall not be smaller than ___ hard-drawn copper
Correct
Please Refer: NEC Code 230.23(B) Exp
Incorrect
Please Refer: NEC Code 230.23(B) Exp
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Question 4 of 12
4. Question
1 pointsThe overhead service conductors are not permitted to be readily accessible for services not over 600V nominal:
Correct
Please Refer: NEC Code 230.24
Incorrect
Please Refer: NEC Code 230.24
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Question 5 of 12
5. Question
1 pointsThe overhead service conductors shall have a vertical clearance of not less than ___ above the roof surface:
Correct
Please Refer: NEC Code 230.24(A)
Incorrect
Please Refer: NEC Code 230.24(A)
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Question 6 of 12
6. Question
1 pointsOverhead Service Conductors shall have a clearance of ___ in all directions from the edge of the roof:
Correct
Please Refer: NEC Code 230.24(A)
Incorrect
Please Refer: NEC Code 230.24(A)
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Question 7 of 12
7. Question
1 pointsOverhead Service Conductors whose voltage is not in excess of 600V nominal shall have a vertical clearance of ___ at the electrical service entrance to buildings
Correct
Please Refer: NEC Code 230.24(B)(1)
Incorrect
Please Refer: NEC Code 230.24(B)(1)
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Question 8 of 12
8. Question
1 pointsThe overhead Service Conductors shall have a Vertical Clearance of ___ over public streets, alleys, parking areas subjected to truck traffic
Correct
Please Refer: NEC Code 230.24(B)(4)
Incorrect
Please Refer: NEC Code 230.24(B)(4)
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Question 9 of 12
9. Question
1 pointsThe point of attachment of the service-drop conductors to a building or other structure shall provide the minimum clearances not less than ___ above finished grade.
Correct
Please Refer: NEC Code 230.26
Incorrect
Please Refer: NEC Code 230.26
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Question 10 of 12
10. Question
1 pointsService conductors passing over a roof shall be securely supported by substantial structures which shall be always independent of the building.
Correct
Please Refer: NEC Code 230.29
Incorrect
Please Refer: NEC Code 230.29
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Question 11 of 12
11. Question
1 pointsCommunications conductors such as those for cable TV or telephone service can also be permitted to be attached to the service mast along with power service drop conductors when the service voltage is less than 600V nominal:
Correct
Please Refer: NEC Code 230.28
Incorrect
Please Refer: NEC Code 230.28
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Question 12 of 12
12. Question
1 pointsUnderground Service Lateral Conductors Shall not be insulated:
Correct
Please Refer: NEC Code 230.30
Incorrect
Please Refer: NEC Code 230.30