Abstract: The present invention relates to an intelligent power distribution system capable of operating at a selectable output voltage, the system including a cable (1) with power bus conductors (1a, 1b) and an intelligent node (2) incorporating a controlled current switch (7) via which a power bus conductor is coupled to an output terminal (4) of the node (2) for supplying current to a load under control of the intelligent node (2). The effective value of the intelligent node output voltage is adapted settable by control of timing, or duty cycle, of the ON/OFF pulses of the controlled current switch (7).