I don't like the idea of having all the wires going in to close, I know people are always over loading those 4 way extension blocks but with this you could easily have lots of loads of upto 8-13amps each all joined next to each other. Would it not get too hot even before the fuse blows?
Clever idea though.
what relevance does how close the wires are have to do with anything?
the mains doesnt jump out of one wire and onto the other
its worth pointing out that the wires inside your average 13A mains cable press against each other all the way along their journey from your wall to your appliance..
Cant possibly see where the argument about proximity comes from.