AC cable

[ninosparkz]

Can AC cable penetrate wallboard into plemum ceiling than back into w.b. to avoid box beam?

 

[ninosparkz]

Coffee riding on it!

 

[dcspector]

Can AC cable penetrate wallboard into plemum ceiling than back into w.b. to avoid box beam?

What type of Plenum? See 300.22

 

[raider1]

If you are talking about a suspended ceiling space used to convey return air, then take a look at 300.22(C)(1) for the wiring methods permitted in other spaces used for environmental air.

Chris

 

[cowboyjwc]

No matter what wiring method you use you will have to seal the penetrations also.

Hey Greg, where ya been?