Electrician Red Seal · Question
What is the maximum number of current-carrying conductors allowed in a conduit before derating factors must be applied, according to CEC Table 5C?
According to CEC Rule 4-004(5) and derived from Table 5C, derating factors for ampacity must be applied when there are more than three current-carrying conducto
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Question: What is the maximum number of current-carrying conductors allowed in a conduit before derating factors must be applied, according to CEC Table 5C?
Answer options:
- 2
- 3 ✅ 4
- 5
Correct answer: 4
Explanation: According to CEC Rule 4-004(5) and derived from Table 5C, derating factors for ampacity must be applied when there are more than three current-carrying conductors in a raceway or cable. If there are 2 or 3, no derating is needed based on this rule.
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