xformer
Senior Member
- Location
- Dallas, Tx
- Occupation
- Master Electrician
1900 boxes is a new term I recently learned. I know it refers to a 4 square box, but how?
1900 boxes
- Thread starter xformer
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Minuteman
Senior Member
- Location
- The Sooner Nation
It was the old Bossert part number.
xformer
Senior Member
- Location
- Dallas, Tx
- Occupation
- Master Electrician
Thank you gentleman...
"Many people believe a 1900 box got it’s name from the fact that it originally was 19 cubic inches. In trying to track that back, I couldn’t find any proof of that but the first reference I saw to 1900 was in the 1917 Central Electric Supply Catalog where they referred to these boxes as 1900 Combination Gas and Electric Boxes. The name seems to have come from the part number given by the Bossert Company. One means of early wiring was to use abandoned gas pipe as the wireway and the manufacturers offered products to accommodate this need. Since this was so common early on, they got the name Combination Gas and Electric Boxes. The gas connection was accomplished by using the 1/2" knock-out and closing the cap with a 3/8" flange on the box cover. The image above shows a section from the 1917 catalog describing these boxes. It shows part numbers for the generic LIST#, Sprauge Manufacturing, The Bossert Co and Chicago Fuse respectively."
Author unknown.
From this link:
"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."
Author unknown.
From this link:
"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."
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