Thanks for all the ideas. Looking into this I found a few things:
1) NEC 625.17 requires any J1772 connector/cable-set over 25 feet in length to use a UL-listed cable management/retraction system. Although most home systems will have a cable far shorter than 25 ft.
2) A 2009 CARB report of lessons learned from EV of the late 1990s, said that cable management should be included to avoid tripping hazards. http://www.arb.ca.gov/msprog/zevprog/in ... rnelas.pdf
3) An April 2010 report from eTec said that retractors should be used for public systems to reduce vandalism. http://www.theevproject.com/downloads/d ... 20R3.1.pdf
4) An overhead retractable system is already designed by a company http://thegreenpump.com/?page_id=20
I don't know anything about this company or if this is a good product. I could not find a price or where to order it from their site. Has anyone seen or tried this one?
I think I am going to try something home-brewed. I might just have the cord hanging down to where the car needs it and then have a hook on the wall to hold it off to the side when not in use. This is not as cool as a retracting system but it should be simple and effective.