I found it extremely annoying that this simple yet very expensive (to buy) thing has not been posted anywhere. So I made my own based on the spec that I found somewhere.
J1772 is a charging standard for electric cars, the inlet is the part that is found on the car, and if you wanted a dummy inlet to simply plug in the charger to hang it up or keep crud out of the pins, be ready to fork out some $$$, but now you can just print it. Feel free to modify and re-post, but please refer to this original. Thanks.
Update 2013-09-08, this part for sale in a couple places around the net. You will notice that the licence agreement you make when you download this indicates it is not for commercial use, that means you cannot sell it if you downloaded it from here. The only person who has authority to sell this particular part is Joel Clemens.
25$ plus shipping, please contact joelclemens at gmail dot com if interested, thank you for your support :) The unit that is being sold DOES have a latch, which is a recent update not fully published here.
Update 2013-10-03 (unit now available in ABS)
Added a sort-of web store to my blog, to buy this, go here
Update October 24 2014
I have not been selling this particular model for some time. 3D printing is a very slow process.... cast urethane is quicker, and injection molding is the fastest!
The hooded/hook version of this inlet has been my most popular version, which is now available injection molded!
I am selling on both my blog (above) (I ship world-wide) and amazon here: http://www.amazon.com/dp/B00TBW1NRM
Special thanks to you! the community for making this possible!
Printed with 1.75mm ABS on a Maker Gear Prusa Mendel with sprinter firmware on a glass bed, (don't you just love that glassy finish?). 0.35mm print head and .2mm layer thickness. Object created in Blender, sliced with slic3r and printed with pronterface. Some sanding may be required, I used a dremel, see photos.
Update: 2013-09-21 uploaded version with latch, takes 2 hours and 40 min to print PLA with .3mm layers