Many modern medical devices consume only small amounts of power. In many cases this power comes from rechargeable batteries. Nevertheless, the mains power supply needed to either power the device or recharge the batteries ends up being quite large and
, have the electric power sockets wired in what is known as a "ring circuit". The wires start at the consumer (fuse) box and travel around the house from socket to socket and end up back at the same consumer[...] nowadays consumes [...]
