Conduit types permitted inside dry (Gypsum Board) walls

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TMMB

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As per NEC, what types of conduits permitted to install inside dry walls (Gypsum board wall)

please advice
 
Why don't you read through chapter 3, in partiular the .10 and .12 sections for each type of wiring method, these are the uses permitted and uses not permitted sections in each section. Most are allowed to be used in such places, but some are only allowed for limited applications, like HDPE conduit which can not be used indoors and must generally be covered somehow when used outdoors.

Some methods will be allowed in drywall cavities, but depending on the occupancy or other use may still not be allowed - like PVC isn't allowed in places of assembly, but could still be used within walls in many other places.
 
kwired said:
Why don't you read through chapter 3, in partiular the .10 and .12 sections for each type of wiring method, these are the uses permitted and uses not permitted sections in each section. Most are allowed to be used in such places, but some are only allowed for limited applications, like HDPE conduit which can not be used indoors and must generally be covered somehow when used outdoors.

Some methods will be allowed in drywall cavities, but depending on the occupancy or other use may still not be allowed - like PVC isn't allowed in places of assembly, but could still be used within walls in many other places.
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I agree 100% with all the statements here expect the last part and I also do encourage the OP to read Chapter 3, it makes for a GREAT lesson.

As some good info - While indeed you are permitted to use nonmetallic raceways in these assemblies if you encase them in 2in. concrete. Section 518.4(B) does permit other nonmetallic wiring methods to be installed in those buildings or portions of the occupancies that are not required to be of fire-rated construction as determined by the local adopted building code.

But I agree 100% with kwired...Read...Read...Read....
 
Comment: Your question could be "what types of wiring methods are allowed inside GWB walls"
Conduit excludes cable wiring methods, such as MC and AC, and EMT. EMT is not conduit.
 
mike1061 said:
How is EMT not conduit? I don't understand that. It's always called conduit around here.
Thanks
Mike
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The T stands for Tubing. It's a raceway, but not conduit.

All conduits are raceways, but not all raceways are conduits.

Just because you use the term conduit in the vernacular doesn't mean it IS a conduit.
 
mike1061 said:
How is EMT not conduit? I don't understand that. It's always called conduit around here.
Thanks
Mike
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Its a non-flexible metallic raceway, but the T in EMT stands for 'tubing'. Must have 'conduit' in its technical name to be Code-recognized conduit.
 
480sparky said:
The T stands for Tubing. It's a raceway, but not conduit.

All conduits are raceways, but not all raceways are conduits.

Just because you use the term conduit in the vernacular doesn't mean it IS a conduit.
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Looks like a duck, walks like a duck, quacks like a...... then it walks into the NEC subjective electrified fence and falls over dead.
 
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