So I purchased some Barina T5 Led light bulbs (from amazon) and I am wanting to hardwire one of them for my work bench. I currently have a 20A outlet on the workbench as well as a 15A circuit that I was planning on hooking a switch to for said light. I checked the light out and they come with a standard two prong plug as well as a tiny 6 inch adapter for hardwiring. The adapter has the standard hot, neutral and ground wires. I am relatively new to house electrical, but the wires are a really small gauge and are stranded. I am sure it is fine, and this is what most power cords are like, but is it fine to just hook these directly to 12 gauge wiring (my 20A and 15A circuit are both ran with 12 gauge)?
I was planning to mount the light fixture above the work bench (underside of my overhead cabinets). The wiring would go behind a pegboard/slat wall that I plan to put on the back wall. Since the wiring harness they provided is so short, I will have to splice it to a longer set of wires. What's the best way to go about this? I should probably have some sort of junction box where I splice right? Can I not just use some butt connectors to splice to romex/nm to the back wall? Maybe run it through more conduit to my box? Is there a way to just extend the harness and not worry about running it through conduit?