NFPA 72, 6.4.2.2.2 clarification

[Jcsecker]

The exceptions to The Class A conduit requirements for the outgoing and return wiring being in separate conduits are 1) not to exceed 10 feet when exiting and entering a device 2) single conduit drops to individual device 3) conduit drops to multiple devices within a single room not to exceed 1000sq ft.Question; what is the difference between the first and second exception, one seems to be saying you're limited to 10 feet, two seems to say it's unlimited to an individual device.

 

[ron]

The first gives you 10' to enter/exit multiple devices in the same box (enclosures). "For a distance not to exceed 3 m (10 ft) where the outgoing and return
conductors enter or exit the initiating device, notification appliance, or control unit enclosures"