I’ve never heard of a T50 staple for NM either.
My state also requires insulated staples for NM cables sizes smaller than 8/3, but there is an exception for using uninsulated staples with listed staple guns, like the T75, which I own, but can’t stand.
I have a T59 which shoots UL listed insulated staples, but it is mostly for small round cables like CAT 5 and RG6/59 coax. They’re a little expensive though, so I generally just use the standard T25 with uninsulated staples.
I also have a DESA PowerFast StrapGun that shoots larger insulated staples for NM cables, but the staples are so expensive that I rarely use it. I recently noticed that GB has an insulated stapler for NM out now, but have never seen anyone using it.
I normally just buy buckets of 2500 or 5000 insulated #15 NM staples and use a hammer. IMO, they hold better and look neater for exposed work.
Last edited by KayJay; 10-27-2009 at 10:01 AM.
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