Trade names of outlet boxes

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finhead

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Does anyone know the origin of the terms 1900 box, 8B box and 11B box for the 4-inch square, 4-inch octagoal, and 4-11/16 inch square box respectively?
Thank you
Brian Dolan
 
Re: Trade names of outlet boxes

This electrical box is usually called a 1900 box because that was the original part number from Bossert almost a hundred years ago. Called a 4" box because of its 4" width, it is the most common box used when a simple switchbox isn't big enough. The part number shown below is only one of many configurations and you need to ask for the size of the knockout (determined by the conduit size) and if the user wants a small (1-1/4"), a standard (1-1/2") or a deep (2 1/8") box. The user also has to specify how it will be mounted: stud ears, etc.

I got this here: Tradeslang.com
 
Re: Trade names of outlet boxes

"1900 box" comes from the original part number from Bossert almost a hundred years ago. I got that information from this site.

I can only guess that the "8" in "8B" refers to the number of sides in an octagon, and that the "11" in "11B" refers to the "11/16 inch" increase in size from the 4x4 box.
 
Re: Trade names of outlet boxes

OK, Bryan, no fair stealing my information from the same web site before I get a chance to post it first. :D

Or as they say, "Great minds drink alike."
 
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