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Journeyman Electrician Exam (NEC-based)

Services and equipment: practice questions

Our Journeyman Electrician bank has 11 questions on this topic. Here are 5 of them with answers; the full mock exam draws from every topic, like the real one.

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Question 1

Where must the service disconnecting means be located?

  1. Anywhere inside
  2. In a bathroom
  3. In the attic
  4. At a readily accessible location nearest the point of entrance of the service conductors
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D. At a readily accessible location nearest the point of entrance of the service conductors — See 230.70(A).

Question 2

What is the minimum clearance for service-drop conductors above public streets?

  1. 10 feet
  2. 12 feet
  3. 24 feet
  4. 18 feet
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D. 18 feet — See 230.24(B).

Question 3 · 2020 NEC

Under the 2020 NEC, what does the outdoor emergency disconnect for a one- or two-family dwelling allow?

  1. Generators to backfeed
  2. Homeowners to bypass the meter
  3. The utility to read the meter
  4. First responders to shut off power at a readily accessible outdoor location
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D. First responders to shut off power at a readily accessible outdoor location — 230.85 was added in the 2020 NEC.

Question 4 · 2023 NEC

Under the 2023 NEC, what does the outdoor emergency disconnect for a one- or two-family dwelling allow?

  1. Generators to backfeed
  2. Homeowners to bypass the meter
  3. The utility to read the meter
  4. First responders to shut off power at a readily accessible outdoor location
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D. First responders to shut off power at a readily accessible outdoor location — 230.85, added in the 2020 NEC. The 2026 NEC replaced it with an outdoor service disconnect rule in 230.70(A).

Question 5 · 2026 NEC

Under the 2026 NEC, where must the service disconnect for a one- or two-family dwelling be?

  1. In the garage, within 10 feet of the door
  2. Anywhere inside the dwelling near the panel
  3. Readily accessible and outdoors, on the dwelling or within sight and not more than 50 feet away
  4. At the utility pole only
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C. Readily accessible and outdoors, on the dwelling or within sight and not more than 50 feet away — 230.70(A). The separate emergency disconnect rule (230.85) was deleted.

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