Anyone have a JuiceBox installed for charging the MS at 60 amps? I've started to read up on them and I'm thinking of buying the base assembled version for $479. I would want it to charge both my MS and my Nissan Leaf. Couple lingering questions: 1. When configured via the website it seems to only support a 40 amp NEMA 14-50. How would I go about connecting it to a 60 amp circuit to take full advantage of the 15 kW? 2. I understand that there was a safety concern surrounding ground fault interrupt on the early models. Has this been addressed?