I have been having a hard time figuring this out through looking at US NEC code and online sources. I am adding LED strip light fixtures/luminaires to a closet (hanging it directly above the door frame or on the ceiling depending on how things go). It will be installed in accordance with code being at least 12" from "closet space"). The fixture is similar to this. Instructions are also similar to this
Am I able to run standard NM 2-wire + ground cabling directly into the light fixture through one of the integrated knockouts and splice inside the fixture's housing? I would install NM push-in connectors in the light fixture knockout so it will hold the Romex in place.
I've seen fluorescent t8 fixtures wired in this way where the light fixture itself was considered the junction box. However, the LED light fixture's instructions show a junction box being used with a plate between it and the light fixture. The plate has a center knockout that the wire is run through and then passes through the light fixture knockout. The wires are all spliced within the light fixture according to the instructions. The junction box will be larger than light fixture so I'd prefer to not have to use one. Further, since the splices are still in the light fixture, the junction box adds no real safety in my opinion besides some extra measure of safe area that the Romex could be tugged into and protect surrounding areas from shorts/fires. Thoughts?