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Does anyone know where you can apply the higher ampacities listed in table 2 for 14 / 12 / 10 AWG?
 

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Light Bender
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When u have to derate a conductor because there are more than 3 in a conduit you can start with the ampacity in the 90 degree column. Assuming your using a 90 degree rated conductor.
 

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Does anyone know where you can apply the higher ampacities listed in table 2 for 14 / 12 / 10 AWG?

When wiring some AC and Refrigeration compressors you can use the higher values . Only some.
 
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PPE Saves Fingers
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Does anyone know where you can apply the higher ampacities listed in table 2 for 14 / 12 / 10 AWG?
When derating is nessisary, or when a code rule requires you to calculate the required wire size for a given situation.

Off hand, that's motors, capacitors, heat, welders and transformers.
 
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