The World has gone Mad.
Mind you, it says Minumum of 20amp Socket... Usually about 10amps arn't they ??
And even if you Did run it off a Socket, it only gives out 175W from that. You have to hook it up to the Actual Battery to get out 660W Power.
Mind you, i suppose if you lugged along a Liesure Battery as well, you could hook it up to that...
Lots of Messing around.
Just have a BBQ !!!!!