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#214073 - 09/28/14 11:54 PM Code for Junction Box mounted on Floor  
dwhite  Offline
New Member
Joined: Sep 2014
Posts: 4
IL
I thought junction boxes mounted on a floor had to have the top flush with the floor. However, a box, along with conduit going over to, and up one wall, was mounted on top of the floor in the classroom I work in in Chicago. It is in a corner of the room about 8" from one wall, and 16" from the other. It is about 2" in height above the floor. I'm wondering if I am mistaken about a floor box needing to be flush, or if there are exceptions I am unaware of.



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#214075 - 09/29/14 02:32 AM Re: Code for Junction Box mounted on Floor [Re: dwhite]  
gfretwell  Offline


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Joined: Jul 2004
Posts: 9,103
Estero,Fl,usa
Floor boxes need to be listed as floor boxes. Then they have to be installed per instructions. That should get you what you need.


Greg Fretwell

#214077 - 09/29/14 07:26 PM Re: Code for Junction Box mounted on Floor [Re: dwhite]  
Fiver  Offline
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Joined: Sep 2014
Posts: 6
United States of America
The term "floor box" is usually reserved for a box with a receptacle installed face up. You pose (possibly) a different dilemma, a "junction" box which would not have a device installed, does not have the same restrictions. The only "electrical" issue would be if it were subject to physical damage as determined by whoever inspected the work. Other than that, there may be safety implications.


#214078 - 09/29/14 09:35 PM Re: Code for Junction Box mounted on Floor [Re: gfretwell]  
dwhite  Offline
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Joined: Sep 2014
Posts: 4
IL
Thank you.


#214079 - 09/29/14 09:39 PM Re: Code for Junction Box mounted on Floor [Re: Fiver]  
dwhite  Offline
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Joined: Sep 2014
Posts: 4
IL
Yes - this is a junction box with conduit going over to the wall from the box. There is no receptacle. Based on the distances from the two walls, it seems like a safety hazard. The only reference I could find was that floor boxes had to be flush with the top of the floor, but maybe there are exceptions for J-boxes.


#214080 - 09/29/14 10:08 PM Re: Code for Junction Box mounted on Floor [Re: dwhite]  
HotLine1  Offline


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Joined: Apr 2002
Posts: 6,857
Brick, NJ USA
As 'Fiver' said, if it was inspected, the AHJ must have been OK with it.

It may be for a counter, desk, or some other item that is not installed.

As it sounds like it's in a corner, it probably is not considered a 'trip' hazard.

Just for info, what type of classroom,??



Last edited by HotLine1; 09/29/14 10:10 PM.

John

#214083 - 09/30/14 12:57 AM Re: Code for Junction Box mounted on Floor [Re: dwhite]  
gfretwell  Offline


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Joined: Jul 2004
Posts: 9,103
Estero,Fl,usa
Yup Fiver is right. I missed the "receptacles" in 317.17(C)


Greg Fretwell

#214120 - 10/06/14 11:34 PM Re: Code for Junction Box mounted on Floor [Re: HotLine1]  
dwhite  Offline
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Joined: Sep 2014
Posts: 4
IL
It is in an elementary school classroom and has not yet been inspected. It is not for a counter or desk, and nothing will be installed over it. It is in a corner and, as mentioned above, it is about 16" from one wall and 8" from the other.


#214121 - 10/07/14 10:44 AM Re: Code for Junction Box mounted on Floor [Re: dwhite]  
HotLine1  Offline


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Joined: Apr 2002
Posts: 6,857
Brick, NJ USA
OK, if I was the inspector, 'Why is it there" and if no good reason..."Remove it"

Trip hazard, subject to physical damage, etc.



John

#214122 - 10/07/14 01:10 PM Re: Code for Junction Box mounted on Floor [Re: dwhite]  
gfretwell  Offline


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Joined: Jul 2004
Posts: 9,103
Estero,Fl,usa
Does your state have a separate code for schools? In Florida they have the SREF codes that deal particularly with buildings in the school system. You might get something there,


Greg Fretwell


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