According to National Electrical Code, the conduit percentage fill table does not apply to sections of conduit used to provide protection from physical damage (sleeve).
National Electrical Code 2014
Chapter 9 Tables
Notes to Tables
(2) Table 1 applies only to complete conduit or tubing systems and is not intended to apply to sections of conduit or tubing used to protect exposed wiring from physical damage.
However, I wasn't able to find anywhere that defines when sections of conduit become a complete conduit system. When the code says "sections" does it actually mean a section of conduit, so it would be a 10' length for example? Is it a "section" until it's attached to fittings or boxes?
Once I determine if it's a section or not, how do I determine how many conductors can fit? Since the code says Table 1 does not apply, does that mean I should use the 100% fill values to determine fill?