Electrician Red Seal · Question
When installing conductors from different systems (e.g., 120V and 600V) in the same raceway, what is the primary requirement?
CEC Rule 12-904(1) permits conductors of different voltages to be in the same raceway, provided that all conductors have an insulation rating sufficient for the
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Question: When installing conductors from different systems (e.g., 120V and 600V) in the same raceway, what is the primary requirement?
Answer options:
- It is never permitted
- A grounded metal barrier must be used to separate the conductors ✅ All conductors must have an insulation rating equal to or greater than the highest voltage present
- The 600V conductors must be twice the size of the 120V conductors
Correct answer: All conductors must have an insulation rating equal to or greater than the highest voltage present
Explanation: CEC Rule 12-904(1) permits conductors of different voltages to be in the same raceway, provided that all conductors have an insulation rating sufficient for the highest voltage in the raceway. For example, all conductors would need a 600V insulation rating.
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