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NHIE: Electrical System — Exam Questions and Answers (Latest Update 2025)
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NHIE: Electrical System — Exam Questions and Answers (Latest Update 2025)
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NHIE: Electrical System — ExamQuestions and Answers (Latest Update
2025)
Service entrance conductors run from the service drop to the
service box or service panel. True of false? - Correct Answer
✅- True
The service size is determined by the amperage and the
voltage ratings of the service. - Correct Answer ✅- True
Is the service drop overhead or underground? - Correct
Answer ✅- Overhead
Are service laterals overhead or underground? - Correct
Answer ✅- Underground
The drip loop is typically part of the service drop. True or
False? - Correct Answer ✅- False
The wire size for the service drop must be the same as the
wire size for the service entrance conductors. True or False? -
Correct Answer ✅- False
,NHIE: Electrical System — Exam
Questions and Answers (Latest Update
2025)
How many wires would you typically find in a 240-volt service
drop? - Correct Answer ✅- 3
What would 4 wires mean? - Correct Answer ✅- 3-phase
electricity
What would 2 wires usually mean? - Correct Answer ✅-
120 volt service
List 7 common problems with service drops. - Correct
Answer ✅1. Overhead wires too low.
2. Damaged or frayed wires.
3. Trees or vines interfering with wires.
4. Wires too close to doors or windows.
5. Wires not well-secured to the house.
6. Poor connection between service drop and service
entrance.
7. Inadequate clearance from roofs.
, NHIE: Electrical System — Exam
Questions and Answers (Latest Update
2025)
List clearances above ground, swimming pools, and roofs. -
Correct Answer ✅Clearances above:
- Roadway 18 ft
- Driveway 12 ft.
- Walkway 10 ft.
- Flat roof 10 ft.
- Sloped roof (e.g., > 4:12) 18 in.
- Low slope roof (e.g., < 4:12) 3 ft.
- Swimming pool 22.5 ft
The service entrance conductors run from the _________ to the
___________. - Correct Answer ✅- Service drop to service
box
All service entrance conductors must be in conduit. True or
False? - Correct Answer ✅- False
All service entrance conductors must be attached above roof
level. True or False? - Correct Answer ✅- False
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