2005 NEC Sec. 314.27(c)

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VIC1958

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Had an underground electrical inspection today in a commercial setting. Electrician installed a regular 1900 box for a recessed (in concrete) floor receptacle. I asked him to provide me the listing for this box and he appeared to be confused by question. I am under the impression that all floor boxes need to be specifically listed for their use. I have never seen a 9100 box used in this application and am curious if it is listed.
 
2005 NEC 314.27(C) = 2014 NEC 314.27(B).

I think the OP's question is whether any 1900 boxes are listed for floor receptacles.

Cheers, Wayne
 
The following is from the UL White Book Guide Information for "Metallic Outlet Boxes" (QCIT).
Floor boxes designed for floor installation as covered in the NEC are provided with covers and gaskets to exclude surface water and sweeping compounds that might be present in floor cleaning operations. Covers with gaskets may be shipped separately from the boxes. Both products are provided with installation instructions. Those boxes intended for installation in concrete floors are frequently provided with leveling screws, threaded hubs or both, and are provided with a marking on the carton to identify boxes of this type such as "Floor Box Cover," "Floor Box" or "Floor Box, Concrete Tight," as appropriate. Floor boxes may be provided with wiring devices. Refer to WET AND DAMP LOCATIONS below for clarifying information on the suitability of concrete-tight floor boxes not intended to be exposed to weather that are installed in concrete slabs or masonry.
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wwhitney said:
2005 NEC 314.27(C) = 2014 NEC 314.27(B).

I think the OP's question is whether any 1900 boxes are listed for floor receptacles.

Cheers, Wayne
Click to expand...

I guess I should have looked at the 2005 before answering but yes, a floor box must be identified for the use as Don points out. I have never seen a 1900 box identified for this purpose however, there are some stamped steel floor boxes that are not far from being a 4"sq box.

Roger
 
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