Conductors and Circuit Requirements
Test your knowledge on conductor and branch circuit requirements in the National Electrical Code.
1. What NEC table is used to size wire-type equipment grounding conductors?
Correct Answer: 250.122
2. Which of the following is not recognized as an equipment grounding conductor?
Correct Answer: Mineral insulated (stainless-steel type)
3. If branch circuit conductors are adjusted in size because of correction factors, an increase in size is required for the associated equipment grounding conductor.
Correct Answer: False
4. What is the minimum size copper wire-type equipment grounding conductor for a feeder protected by a 1,000A rated circuit breaker?
Correct Answer: 2/0 AWG
5. Where necessary to comply with 250.4(A)(5) or 250.4(B)(4), the minimum sizes for wire-type equipment grounding conductors in Table 250.122 shall be increased.
Correct Answer: True
6. For an 80A branch circuit, liquidtight flexible metal conduit shall be permitted as an equipment grounding conductor, if the length does not exceed 6 feet.
Correct Answer: False
7. In a patient care space, the branch circuit must be installed in a raceway or cable that qualifies as an equipment grounding conductor and a wire-type, insulated, copper equipment grounding conductor must be included in the branch circuit.
Correct Answer: True
8. The circular mil area of a 6 AWG copper conductor is _______.
Correct Answer: 26,240
9. If a PVC conduit contains the following feeder circuits (200, 400 and 600), what is the minimum size aluminum equipment grounding conductor (wire-type) required to be installed?
Correct Answer: 2/0 AWG
10. Equipment grounding conductors perform which of the following functions?
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