Yeah 48 AMP versus 40 AMP - hardwire versus plug.
It doesn't mean much but if you have shop / wants a heater in your garage etc (in GTA), then the plug does wonders.
Now, to add to this, to hard wire, if you had to return the charger (esp now that chargers are free + rebates) and then you have to replace / repair, then you gotta thread everything back etc.
I don't want a new model to do this every time. So waht people also do is to take this to their cabins / trailer ... i can barely afford my car let alone having a cabin but i get where they are (snowbirds) are coming from.
I gues its NOT too complex but i aint' touching that. I don't do electrical or gas.