Connected to 120V, through my EMW Wattbox with EKM OmniMeter II, my Duosida EVSE charging my i-MiEV indicated either 14.0 or 14.2 Amps.
I measured the blade thickness of Leviton 5-15P and 5-20P add-on plug adapters, and they are the same, so the 5-20P just has a rotated blade, no other...