C14 to C13 IEC Power Cable 1m | Blue 0.75mm

In short; Voltage drops over distance due to the resistance of the cable. The more cable there is (length) the more resistance there will be, but the resistance causes heat and so the longer the cable is the warmer it gets and the warmer it gets the less current it can carry. This is generally overcome by upgrading to a cable with a larger conductor. Hence, we can use a conductor with a CSA (cross-sectional area) of 0.75mm² on a 10 Amp rated cable up to 2m but are required to use aq CSA of 1mm for longer lengths.