I can't find the the Swedish requirements. It's not in the Building Regs nor in the Wiring Regs. Must be hidden away somewhere. [Linked Image]

IIRC the requirement is three sockets per room or a maximum distance to socket of 4 meters. I.e a 4 meter cord should reach a socket. Sockets are usually doubles, except those over counters or those placed at the same height as the light switch. (Combined sockets and switches are becoming increasingly common, mostly in commercial, since it makes the sockets easy to find and reach) Dedicated sockets are usually singles too.