LOL. I don't even know how to recover from this.
You are right. I am totally wrong. Very few EVs allows you to select L2 charging currents.
Here's Gordon Ramsay on how I feel right now...
https://media.giphy.com/media/3o85xnoIXebk3xYx4Q/giphy.gif
Apologies. It's been a long time since I had a leaf. I seemed to have remember a charge rate setting, but that must have been for the L1 rate. Not the L2 rate.
Anyway, I don't think any onboard charger will let you charge @ 120V @ more than 12A. I really could be wrong on that, but I highly...