The items on page 27-28 Some of the lit. says it complys with this code...
334.40(B) Devices of Insulating Material. Switch, outlet, and tap devices of insulating material shall be permitted to be used without boxes in exposed cable wiring and for rewiring in existing buildings where the cable is concealed and fished. Openings in such devices shall form a close fit around the outer covering of the cable, and the device shall fully enclose the part of the cable from which any part of the covering has been removed. Where connections to conductors are by binding-screw terminals, there shall be available as many terminals as conductors.
IMO they are bogus! (due to insulation piercing, a born failure...) However it they were mechanical and soldered perminant, or even exothermicaly welded, I might be OK with that....
![[Linked Image]](https://www.electrical-contractor.net/ubb/smile.gif)
