Electrician Red Seal · Question
What is the purpose of the neutral conductor in a single-phase 120/240V residential service?
The neutral conductor in a 120/240V system provides the return path for current for 120V loads. It is also grounded at the service entrance.
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Question: What is the purpose of the neutral conductor in a single-phase 120/240V residential service?
Answer options:
- To provide 240V to heavy appliances.
- To carry fault current to ground during a short circuit. ✅ To provide a return path for current when 120V is used.
- To bond all metallic enclosures to earth.
Correct answer: To provide a return path for current when 120V is used.
Explanation: The neutral conductor in a 120/240V system provides the return path for current for 120V loads. It is also grounded at the service entrance.
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