Question 1: Multi-wire branch circuits shall supply only line to neutral loads.
- True
- False
NEC Reference: NEC 210.4
NEC CODE
NEC 2023
Branch Circuits (NEC 210)
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The National Electrical Code (NFPA 70) is the benchmark standard for safe electrical installation in the US. It is updated every 3 years by the NFPA.
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The most tested articles are 100 (Definitions), 200–250 (Wiring & Grounding), 300–314 (Wiring Methods), 400–411 (Conductors), 430 (Motors), and 700–701 (Emergency Systems).
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Student Reviews 5.0 / 5 · 2 reviews
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James Kowalski
Branch circuits are always on the exam and this test nailed it. As a 3rd year apprentice these are exactly the kind of questions I need to be drilling. Free too which is a huge bonus.
J
James Kowalski
Branch circuits are always on the exam and this test nailed it. As a 3rd year apprentice these are exactly the kind of questions I need to be drilling. Free too which is a huge bonus.
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Branch Circuits (NEC 210) — Question List
Question 2: What is the maximum voltage applied to branch circuits that are connected to luminaries in dwelling unit?
- 120 volts
- 240 volts
- 150 volts
- 480 volts
NEC Reference: NEC 210.6
Question 3: The 30 amp branch circuit provided for laundry outlet shall not have any other outlet.
- True
- False
NEC Reference: NEC 210.11
Question 4: Which of the following is the amperage of the branch circuit additionally required for bathroom outlets?
- 20 amp
- 15 amp
- 25 amp
- 10 amp
NEC Reference: NEC 210.11(C)(3)
Question 5: Which of the following is the minimum branch circuit size operated at 480 volts and with out any correction factors?
- Continuous load plus non-continuous load
- Continuous load plus 125 % of non-continuous load
- 125% of Continuous load plus non-continuous load
- 125% of Continuous load
NEC Reference: NEC 210.19(A)(1)
Question 6: Which of the following is the minimum branch circuit rating that will be used for house hold appliances where the load is 10 KW?
- 30 amperes
- 20 amperes
- 40 amperes
- 25 amperes
NEC Reference: NEC 210.19(A)(3)
Question 7: What are the minimum heavy duty lamp holders that are permitted on 20 ampere branch circuit operated at 120 volts?
- 2
- 1
- 3
- 4
NEC Reference: NEC 220.21(A)
Question 8: The lamp holder connected to a 30 amp branch circuit must be of heavy-duty type.
- True
- False
NEC Reference: NEC 210.21(A)
Question 9: A utilization equipment connected by cord and plug type shall not exceed ................. percentage of branch circuit rating.
- 80
- 70
- 90
- 95
NEC Reference: NEC 210.23
Question 10: If a feeder conductor is supplying only transformers, which of the following is the ampere rating of feeder conductor?
- less than the sum of name plate ratings of transformer
- 125 % of sum of name plate ratings of transformer
- 110% of sum of name plate ratings of transformer
Branch circuits are always on the exam and this test nailed it. As a 3rd year apprentice these are exactly the kind of questions I need to be drilling. Free too which is a huge bonus.
Branch circuits are always on the exam and this test nailed it. As a 3rd year apprentice these are exactly the kind of questions I need to be drilling. Free too which is a huge bonus.