FWIW:
I had jumped on the NRG deal for the Level 2 Charger. The deal is $29.99/month for 36 months. They furnish you a Level 2 installer (30 Amp, 240 Volt, 7.2KW Eaton, I believe) with 20 ft. cord. If, after 36 months, you want to keep the charger, you can make a one-time payment of $150.00, and the charger is yours. During the 36 month payment period, the charger is under service by NRG.
I asked the NRG rep that was assessing my garage for installation if we should knock through the garage wall to place the unit outside the garage. He said that would be about $150.00 extra. He felt that was not necessary, however, since we could just run the cable under the garage door, and simply close the garage door on it.
The NRG rep told me that he has a LEAF as well, and like me, parks the car in his driveway. I asked if there is any chance this could cause damage to the charger cable. The NRG rep felt it was hardly likely, since he's owned his LEAF for several years now, and has been using this configuration, and he noticed no problems with the charger cord.
I figure if the rep recommends doing this, and in fact does this himself with the company's equipment, I won't need to worry much about any possible questions if a service issue arises.
I added another extra protective feature to prevent any possibility at all of abrasion due to the repeated garage door contact with the cable. I took a swimming pool floatation noodle, and cut off a 36 inch length. Since the middle of a swimming pool noodle is hollow, and the hole is almost exactly the size of the charger cable, I simply slit the 36-inch piece long the length axis. This allows you to push the cable into the noodle. Since the fit is nearly exact, the noodle will remain on that part of the cable without any additional taping or fixing. I put the noodle on the part of the cable that normally goes underneath the garage door.
This works real well or me.
BTW, the NRG deal is listed on their website. I wouldn't have been able to save much by buying separate parts, and finding an electrician, paying permits, etc. The price of $29.99/month for 36 months includes the charger plus all fees, permits, installation, etc. I thought it was worthwhile, but that's for any of you to decide individually.