If the device needs to be supplied by a 15A circuit, then everything in that circuit needs to be rated for 15A. You can't just use a 15A rated socket where a 10A socket was. This is because the wires running to that 10A socket will not handle that current draw and the 10A fuse will blow. If you replace the 10A fuse with a 15A fuse, you are now drawing more current through wires meant to handle only 10A. That will cause the wires to run hot and probably fry. In essence the wires now become the fuse. If I were doing it, I would run a 20A circuit (fuse, wiring, socket, etc.) to have a little cushion in case there is a surge of some sort.