I am adding some additional outlets and outside lights to my garage. The existing outlets are on 12 gauge wiring, so presumably a 20 amp circuit (I did not check this - did not have my reading glasses with me when I was at the breaker box 8-). The lighting fixtures are LED type, so very low power needs compared to incandescent lighting. I was considering running 12 gauge to the new outlets, and 14 gauge from the new outlets to the outside lights (the lights are the terminal equipment in all cases), but I believe I would need 15 amp protection for that portion of the circuit. After a large number of not-very-useful searches, I finally came across this stackexchange question, which nixed my idea of using a 15 amp GFCI. I could not find so straightforward an answer for AFCI outlets, but I assume the same is true.
So, my question is, is there an outlet-mounted device (preferably with actual outlets) that can provide 15 amp overcurrent protection to the next device in the branch?
As an aside, is there, by any chance, a provision in the U.S NEC for connecting a low demand device at the end of a circuit this way without addition overcurrent protection? (I expect not...)
* Edit *
Some additional searching has lead me to panel mount thermal circuit breakers, such as these devices:
leading me to wonder if I could put one of these in an electrical box where the 12 gauge and 14 gauge meet, and be to code.