From the 2018 Leaf Manual:
"Use the EVSE with the plug in an upright
position. (The cord should extend
down from the outlet.)"
Does anyone have an idea why the orientation would matter for the EVSE. My 240V outlet is only about 14 inches above my workbench mounted on cabinets fixed to the wall. So, the cord makes a 90 deg bend and the EVSE is mounted in the bracket horizontally. It works fine.