Before I even bought my i-MiEV I had purchased and installed a L2 32A SPX Power Xpress EVSE (it also works on 120vac and has adjustable current settings). It has served me well for five years, but unfortunately there was some sort of problem that prevented it from working with the Tesla and Bosch (who now owns SPX) has ignored my requests. I'm parting with this SPX EVSE as it's going away with my first i-MiEV (separate story).
Inasmuch as I wanted a still-higher-power J1772 charging capability to be used for both the Tesla and the i-MiEV, I recently bought an eMotorWerks JuiceBox 40 Pro.https://emotorwerks.com/store-juicebox-ev-charging-stations/202-juicebox-pro-40-smart-40-amp-evse-with-24-foot-cable
I wanted power monitoring and data-taking, as my TED household monitoring system was rendered useless by the Enphase microinverter communications when I installed additional solar panels a year ago. When I drove up to eMotorWerks for compatibility testing of their new CHAdeMO charger with the i-MiEV, I managed to obtain a factory-refurbished JuiceBox Pro for a nice price. I'm using it daily (on the existing 20A circuit which means 16A max into the Tesla and more than adequate for the i-MiEVs 13A), but need to rewire the garage and bring the conduit and wire over to a more-convenient NEMA 14-50 outlet (thanking my foresight forty years ago for putting in two 50A outlets for welders when I built the house).
So far, so good with the Wi-Fi-connected JuiceBox as it's working well with both the i-MiEV and the Tesla S. The J1772 cable that came with it is massive and I can't help but wonder if they don't also use this cable with their 75A EVSE. The next time I fully charge one of the cars I'll try to take a screenshot of the graphic showing the downward slope towards the end of charge. Otherwise, all it shows is a simple on/off calibrated graph and a table showingi the power amount and duration and kWhrs and how many $ I'm saving by NOT using fossil fuels (I get to set both the mpg and fuel price).
Next, need to install the 100A circuit for the Tesla HPWC...