NEMA Technical Bulletin -Screw Attachments to Electrical Boxes - Guidelines for Screw

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MasterTheNEC

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Attached is a newly released NEMA Bulletin on :Screw Attachments to Electrical Boxes - Guidelines for Screw
 

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  • Bull_109_Screw Attachments to Electrical Boxes_02_05_15[1].pdf
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That bulletin is a perfect example of the daily BS we deal with.

The bulletin tells us that it is critical that we use high quality hardware that fits.

The boys at NEMA have apparently never looked at the hardware manufacturers send us with fixtures.

Then there is the fact that not that long ago Mark Ode of UL had an article telling us we had to use the included hardware.
 
Does this mean I can go back to using drywall screws with a clear conscience?
lol...did you read the thing...lol


There are occasions when it is necessary to substitute the screws that are provided with electrical
boxes and it may be impractical to obtain replacement or substitute screws from the box
manufacturer. Screws can be lost or damaged or longer screws may be needed during
renovations. When substituting the screws that are provided with an electrical box for cover
mounting or for mounting a luminaire support strap, it is critical to use a high quality machine
screw of the appropriate size and 32 threads per inch. Never use drywall screws!


?I don't work at NEMA...lol..don't kill the messenger.
 
We have decided to tag the undersized ground wire at each end as 'undersized' and also tag the conduit to be clear it is the ground path as all other conduits in the bldg are not


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