I believe that the holes opposite the opening (the back) of a 1900 box are designed for using different methods of securing and supporting the box.

I do not believe the small holes they provide on the side of the box are designed for mounting, but I cannot say I know that for sure. We need a manufacturer to state what the intention of the holes are for.

I have seen additional holes drilled into the side used for support, I have also seen the KOs removed and a screw and washer used for support.

I have also seen KOs dditionally 'holesawed' and 'knockedout' in these same boxes.


I am not saying these methods do not work, but have these boxes actually been designed for those purposes - maybe yes, maybe no.

What makes me laugh is how passionate some peope get for some of the different topics we discuss here - notice how I say discuss- as that is what we are trying to do.

I will say that I have used certain methods I learned in the field and seen here that they are not really permitted - that is the beauty of these sites. [Linked Image]


Think about this:
When mounting a box in a suspended ceiling, say to a junior beam, we usually mount it through a hole in the back of the box and then leave many of the KOs for entry from any angle the cable/conduit may come from.
Normally we mount boxes on framing with bracket boxes, the brackets designed for the mounting purpose.
The 'ingenuity' of men/women in our trade has led to many manipulation procedures over the years to help installations, when we either run out of the proper equipment or when no equipment has been designed for the purpose at hand. Some of these manipulations have become standard practice, some have even led to the evolution of new equipment - with the latest that comes to mind, the Smart Box.

Pierre

Pierre Belarge