mc in plastic boxes

[ddubbs103]

Just curious mc in plastic boxes, any code reference for that?

 

[nolabama]

what would you use for the listed connector?

 

[mdshunk]

what would you use for the listed connector?

How about a regular 2-screw romex connector?

 

[celtic]

Just curious mc in plastic boxes, any code reference for that?

314.3 comes to mind...

 

[ddubbs103]

thanks for the code reference

 

[mdshunk]

thanks for the code reference

Make no mistake, however, in that there are legal ways to use type MC cable with nonmetallic boxes.

 

[peter d]

Make no mistake, however, in that there are legal ways to use type MC cable with nonmetallic boxes.

They just don't make any sense 99% of the time.

 

[nolabama]

Make no mistake, however, in that there are legal ways to use type MC cable with nonmetallic boxes.

well i wish i would have known that about 4 days ago - i thought you couldnt use em with MC was because if your useing MC you have a fire rating that the plastic boxes wont have

 

[mdshunk]

They just don't make any sense 99% of the time.

I disagree. I'm coming up with 98%

 

[nolabama]

give me an example of the 2%

 

[mdshunk]

well i wish i would have known that about 4 days ago - i thought you couldnt use em with MC was because if your useing MC you have a fire rating that the plastic boxes wont have

Arlington OneBox is a good nonmetallic fire rated box for adding one receptacle or switch in a rated assembly with type MC cable.

 

[nolabama]

i keep seeing those boxes on this forum, i gotta get a couple for the van

but as to what i was doing 4 days ago .. standard blue nail on was being used in a 4 story wood frame with commercial property on first floor , 4th floor will be resi , so correcte me if im wrong i cant use the blue boxes

 

[mdshunk]

i keep seeing those boxes on this forum, i gotta get a couple for the van

but as to what i was doing 4 days ago .. standard blue nail on was being used in a 4 story wood frame with commercial property on first floor , 4th floor will be resi , so correcte me if im wrong i cant use the blue boxes

I've never seen a blue wall box with any sort of hour rating. Can't say that I've ever looked, to be frank about it.

 

[peter d]

I've never seen a blue wall box with any sort of hour rating. Can't say that I've ever looked, to be frank about it.

I'm 98% sure they have the rating stamped right on them.

 

[nolabama]

god im bored
http://www.carlonsales.com/techinfo/faqs/FAQ-ZipBoxes.pdf

 

[mdshunk]

I'm 98% sure they have the rating stamped right on them.

Now you made me go and look it up. A zip box is 2-hour rated. I'd have never guessed.

 

[Pierre C Belarge]

Arlington OneBox is a good nonmetallic fire rated box for adding one receptacle or switch in a rated assembly with type MC cable.

Marc
Would you mind providing a link for the MC listing with the One Box?

 

[nolabama]

well that brings up a question - how do i determine what the fire rateing needs to be - call the AHJ?

 

[mdshunk]

Marc
Would you mind providing a link for the MC listing with the One Box?

What causes you to think that a box with a 1/2" knockout would need the wiring methods that utilize 1/2" knockouts each specifically permitted for use with the box?

 

[mdshunk]

well that brings up a question - how do i determine what the fire rateing needs to be - call the AHJ?

Should be on your prints pretty clearly if it varies from area to area of the building (like stair towers, egress halls, etc.). I've seen it right on the permit if the whole building is the same.