314.5 Fasteners Entering Enclosures

[@aaronwidder4458]

So 314.5 exception mentions protected by an "approved means", would that be anything that can "thread" onto the screw? Or just wrapping some electrical tape? I know approved means is decided by those having jurisdiction.

[@garbo8962]

We always purchased 1900 &2100 ( 4& 11/16" ) boxes by the case and so many times a few screws would be missing so we just got some 8/32 by 1/2" long machine screws. In the thousands of covers that I removed guess I was lucky to never see a machine screw shorting out a wire. In panels that we used 3/8 or 1 2" all thread we tried to keep threaded end just a few threads longer to install flat washer & a hex nut. Would screw in a think it was called an acorn nut or silicone end of exposed threads.

[@saltyroe3179]

OK, if I am using a plastic box, can I attach the box by driving a SPAX screw through the back wall of the box into the stud leaving only the head of the screw in the box?

[@RyanJacksonElectrical]

That is 314.23(B), not this section.

[@saltyroe3179]

@@RyanJacksonElectrical thanks, the intent is good, the wording is not so good. The objective should be - not to impact the structure of the box or what it is attached too - only have the head with no sharp edges inside the box - no threads or or nail shanks should be inside the box

[@kevinhoober1863]

Lip sync (video and audio lining up) is off on this one for some reason, might want to double check your settings. I looked back through the past several videos. I feel like lip sync changed between 250.148 and 300.4--maybe you got a new mic or camera? Audio is currently ahead of video. Keep the content coming!