Electrician Red Seal · Question
According to CEC 4-004(1)(a), what is the maximum allowable conductor operating temperature specified for TWN75 cable?
The 'N75' in the cable designation 'TWN75' indicates a maximum operating temperature of 75°C. The CEC Tables for conductor ampacities are based on these tempera
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Question: According to CEC 4-004(1)(a), what is the maximum allowable conductor operating temperature specified for TWN75 cable?
Answer options:
- 60°C ✅ 75°C
- 90°C
- 105°C
Correct answer: 75°C
Explanation: The 'N75' in the cable designation 'TWN75' indicates a maximum operating temperature of 75°C. The CEC Tables for conductor ampacities are based on these temperature ratings.
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