raceway systems

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mjc43

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My understanding is that all wires must be accessible by removing a device, blank plate and/or a cover, thus giving accessibility to the wiring system. This would be regarding a residence. I am enrolled in a class where the instructor insists the NEC definition for accessibility means the entire conduit system. When drywall, masonry, or any other type of wallframe system is up, is there any reference in the NEC that regulates access to the screw of the fitting (set screw) once a conduit assembly is installed? I do not believe the NEC is looking for access to raceway systems concealed in drywall. To me, the conduit assembly function is to provide access to electrical conductors whose sole purpose is to insert or extract wire and cable. Thoughts? Thanks.
 
Wires in a raceway system are considered accessible.
Article 100
Accessible (as applied to wiring methods). Capable of being removed or exposed without damaging the building structure or finish or not permanently closed in by the structure or finish of the building.

Thank you for questioning your instructor. You will go far in this trade.
Many electricians have been taught wrong, or never take the time to understand the NEC.
 
Since you used the term set screw I assume you are referring to EMT. Ask your instructor what he/she thinks about 2008 NEC 358.10(A):

Exposed and Concealed. The use of EMT shall be permitted for both exposed and concealed work.
 
mjc43 said:
My understanding is that all wires must be accessible by removing a device, blank plate and/or a cover, thus giving accessibility to the wiring system. This would be regarding a residence. I am enrolled in a class where the instructor insists the NEC definition for accessibility means the entire conduit system. When drywall, masonry, or any other type of wallframe system is up, is there any reference in the NEC that regulates access to the screw of the fitting (set screw) once a conduit assembly is installed? I do not believe the NEC is looking for access to raceway systems concealed in drywall. To me, the conduit assembly function is to provide access to electrical conductors whose sole purpose is to insert or extract wire and cable. Thoughts? Thanks.
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I'm sorry but if someone really thinks that you need access to the set screws on connectors and coupling then they shouldn't be teaching anyone.
 
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