Here in New Zealand the power outlets within a house are configured in a loop. If a power cable is attached to the loop and it is shorter than 2 metres then it will be seen by the power supply as part of the loop. If the power cable is 2 metres or more, then it will be seen as a spur rather than part of a loop, and the electrical behaviour will be different.
If you have a dedicated mains supply - and you are running a spur from the main power distribution board, then you have created a spur and the length of power cable may be less important in this regard.
If you have a dedicated mains supply - and you are running a spur from the main power distribution board, then you have created a spur and the length of power cable may be less important in this regard.