AntronX wrote:Just regular 120V 15A plug. I use it on 120V for now when away from home, but I can easily make L14-20P adapter to use it on 240V at home or a dryer plug adapter. Nice thing is, it fits any standard extension cord without modification.....to it. But I would not recommend this to people not electrically inclined.
+1. Personally I'm standardizing on 240v plugs on dual voltage EVSEs and to use it on 120v I have the 120v plug on one and a female 240v socket on the other. I figure if my adapter plug ever falls into the wrong hands it's much better to inadvertently plug a 240v device into a 120v socket vs the other way around

Myself I wouldn't feel comfortable making an adapter plug going the other way around(120v female with a 240v male) as that could be a disaster using that converter with a 120v only device, but thats just me

I do see your point though about being able to use a standard relatively inexpensive 12 gauge 120v extension cord. My 10 gauge 240v extension cord only 20' cost as much as 2 50' of the 120v extension cords and isn't the nice flexible jacket as the 120v one.