Cable Tie Tightener

[Moby Duck]

Great little tool, I like it, but I would suggest that you don't use it for Data Cables Cat5, Cat5e, Cat6 etc. These cables are very sensitive to being crushed and the advice given is that that they should always be left slightly loose, not even fully hand tightened, and for similar reasons they should never be stapled with a staple gun.

Larger sized cable ties are very strong, and if for example a 10mm wide nylon cable tie was tightened until the tail sheared off, it would probably damage the insulation of any type of cable. If a bunch of cables carrying current was clamped very tightly, it would create a hot spot as cables are given current ratings that assume they are freely ventilated.
Cable ties can and do slip, and shearing them off, assuming they shear at the last tooth of the ratchet, would mean that they are only being held buy one of the two teeth that they were originally designed with to make a secure tie.
I have never seen electricians shear off cable ties like this, they just cut the tails. My observations were in a marine/military environment where they are now largely forbidden, and stainless steel ties are used instead. They still use thousands of plastic ties in the wiring installation process as they are easy to use, but on completion they are removed and/or backed up by expensive stainless steel ones at around $6 each.