Well there seems to be no laws yet because no kid has electrocuted himself yet.
Here is some info on the J1772 connector. They built it with safety in mind.
it takes a lickin'
"Why can't I just use an extension cord to plug in my car?"
In addition to the fast charging options, there are safety and durability considerations. Multiple levels of shock protection are built into J1772 including ground-fault protection, "finger-safe" sleeved prongs and enhanced cable insulation make it safe rain or shine. Another safety feature prevents the vehicle from driving away if you accidentally leave the plug connected.
This connector is tough. "You can literally drive over the plug, hose it down with water and plug in 10,000 times.", said GM Engineering Specialist and SAE Charging Station Chairman, Gery Kissel. "Try that with an extension cord!", Kissel continued on VoltAge.com. Oh, and did I mention there’s a flashlight designed into the charge cord plug so that it will be easier to plug in at night?