Quick question.Under table 310.15b16 if you go to the 75 degree column. Those insulation type ampacity is rated for 75 degrees even though the actual wire size(copper or aluminum) is rated for an ampacity at 90 degrees continuous. If you are doing ampacity correction you still do ampacity correction at 75 degrees for conductors listed under this column and 90 degrees for conductors listed under the 90 degrees column , correct?
Table 310.15b16
- Thread starter Djelite
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ramsy
NoFixNoPay Electric
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- LA basin, CA
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- Service Electrician 2020 NEC
Not if wire is used in a lower rated wiring method, terminal, or lug.
Please elaborate.
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I agree, your post specifically mentioned the starting point which would be the highest ampacity listed for a specific conductor type.
That has nothing to do with the question at hand
ramsy
NoFixNoPay Electric
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- LA basin, CA
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- Service Electrician 2020 NEC
The question is not the problem.
The problem is NEC 310.16 ampacity is wrong by itself.
ramsy
NoFixNoPay Electric
- Location
- LA basin, CA
- Occupation
- Service Electrician 2020 NEC
Much less does the question indicate awareness of weaker parts.
Again you are answering questions that haven’t been asked. The ampacity of the conductor itself has nothing to to do with any other factors. Once you install and terminate that conductor other factors must be considered. But no one is talking about that
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