Floor box in office remodel

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sw_ross

Senior Member
Location
NoDak
Working on a remodel of an office space.
The GC showed me two old floor boxes that consist of a 1G handy box recessed into the slab with EMT in the concrete to supply the box.

I know that nothing about the setup is correct. Currently as was shown to me the boxes were empty with a a blank cover over an empty box (no conductors).
I’m looking at the codebook regarding a faceplate for floor receptacles, but can’t find a specific reference.

I’m assuming a simple faceplate with a receptacle in the face-up position is not allowed? Something to do with crap getting into the receptacle openings?

406.5(H) mentions “Installed in a listed floor box”
Is that what I’d be looking at for a reference against this install setup?

Thanks
 

infinity

Moderator
Staff member
Location
New Jersey
Occupation
Journeyman Electrician
I agree the floor box needs to be listed for in floor use. The EMT in the deck is permitted.
 

Coppersmith

Senior Member
Location
Tampa, FL, USA
Occupation
Electrical Contractor
I quick look at Home Depot's site shows several listed floor receptacles that are face up. I believe these are code legal as long as they are not used in countertops.
 

GoldDigger

Moderator
Staff member
Location
Placerville, CA, USA
Occupation
Retired PV System Designer
You can get floor receptacle cover plates with either hinged or screw threaded cover plates to protect them when not in use.
For wood floor installations you can also get a deeper recessed box that allows you to mount a round of flooring on the top of the screw cover.
For commercial installation, where there is sufficient subfloor depth you can get a large recessed box with the receptacles at about a 45 degree angle inside and slots in the hinged cover. The equivalent of an in use cover on an outdoor box. But they are both expensive and ugly. They often include network and AV jacks as well.

Sent from my Pixel 4a using Tapatalk
 

hbiss

EC, Westchester, New York NEC: 2014
Location
Hawthorne, New York NEC: 2014
Occupation
EC
While we are on the subject of floor boxes. Just out of curiosity, does anybody make a water tight floor box that could be used in a commercial kitchen? o_O

-Hal
 

Coppersmith

Senior Member
Location
Tampa, FL, USA
Occupation
Electrical Contractor
While we are on the subject of floor boxes. Just out of curiosity, does anybody make a water tight floor box that could be used in a commercial kitchen? o_O

In a past life I worked at a pizza shop. We would pour out a flood of very hot water on the floor to clean it and then mop it up. I don't think any flush mounted receptacle could stand up to that abuse.
 

hillbilly1

Senior Member
Location
North Georgia mountains
Occupation
Owner/electrical contractor
Exactly and neither do I. But you never know what somebody might have come up with.

-Hal
Yeah, most I’ve seen have been on rigid stub ups. That cleaning solution is really caustic, had a call where water was running out of a box in the basement of a restaurant, someone ran emt through a hole in the floor, and up a wall. The hole was sealed, but the conduit was rusted through.
 
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