[RE-wrenches] 310.15(A)(2) Exception

[Brian Mehalic]

Question about the 10'/10% rule - the exception states "adjacent portions of
a circuit."  How does this apply to an underground conduit run, where there
are two ends exposed to higher ambient temperatures than the length in the
ground?

For example, what if there is 100 feet in the trench, and 7 feet above grade
on either side? Can the exception be applied? How about 200 feet in the
trench and 7 feet above grade on either end?

Thanks,
Brian

-- 
========================
Brian Mehalic
NABCEP Certified Solar PV Installer™ R031508-59
IREC ISPQ Certified Affiliated Instructor/PV US-0132
PV Curriculum Developer and Instructor
Solar Energy International
Carbondale, CO 81623
http://www.solarenergy.org
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