2011 SER used as feeder, what temp colmn?

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acrwc10

Master Code Professional
Location
CA
Occupation
Building inspector
I'm sure this has been gone over before but I couldn't find it in a search.
When using AL SER cable as a feeder or branch circuit, not buried in insulation, per Section 338.10(B)(4) am I allowed to use the 75degree rating? This seems to have been addressed differently from 2005 to 2008 to 2011.

What I'm reading is, "treat it just like NM, except for the 60 degree rating. Unless it is in insulation, if in insulation then use the 60 degree rating. If not in insulation use the 75 degree rating."
 
Thank you, it really has an effect when you size (and price) 8/3 and 6/3 NM to SER of the same size, then compare what the amp ratings are in the 75 to 60 degree tables.
 
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