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NEC Temperature Class

Mechanical Farmer

Mechanical
Mar 12, 2025
39
If I have a process that requires heat tracing I need to consider the T-rating of the heat trace elements.
Is there a provision to the NEC code that allows my to neglect the T-rating/classification if process temperature exceeds Auto Ignition Temperature. Taking the heart of the rule into consideration, the element's temperature is irrelevant. If vapor were to escape the process piping it would ignite as soon as it came into contact with oxygen.
 

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