Re: 50 miles???
"It comes in from a cable in the street. Adding a socket at pavement edge isn't a huge problem."
In most places it is very illegal, for several reasons, and as well as a penalty, you will have to pay to remove it, either by an appropriate electrician or an electric company crew, whichever they decide.
Either way, it won't be cheap.
Biting the hand that feeds IT
