Overhead Service- Conductor and Trough sizing

[infinity]

I believe you still need to take ambient into account but there is not "roof top:" adder when you are 7/8" above, Am I incorrect ?

Yes you're correct. I didn't word that properly. The temperature adder of 60° F is not required.

 

[2Broke2Sleep]

Well that's an unexpected bonus for today. Wonder how many code cycles the 'distance from rooftop' table has been through...