It's not what you think. 400.10(A)(11) still does not allow flexible cordage to be run within the wall. Legrand only uses it to go between the existing receptacle and the newly installed inlet. That part is just an extension cord with male/female connectors and is outside of the wall.Because it is explicitly allowed by (2017) 400.10(A)(11)?
Don referenced 400.12(A), but presumably meant 400.12(1) (assuming 2017), which is "As a substitute for the fixed wiring of a structure". As you point out, the in wall portion of the product is a Chapter 3 method, so that was not the concern.It's not what you think. 400.10(A)(11) still does not allow flexible cordage to be run within the wall.
It appears so... if you can live with the limited distance to the new receptacle due to the length of the NM they use.So question, if the existing system did not have AFCI requirement at time of installation, will this extension of wiring be exempt from 210.12 as it is essentially an extension cord?