Since a device is spec'd for power consumption over a range of input voltages, as the remotely delivered voltage decreases with distance, the amps increase, causing the delivered voltage to decrease further.
See our list of popular PoE devices for voltage specs here
This Voltage Drop Calculator can be used for any type of wire and gauge. Unlike other calculators - you can enter the power required by the device
in order to calculate total power including the effects of voltage drop and line loss. It will calculate and display the max cable distance, and is
easier to use than a basic voltage drop tool.
Our Calculator will give a warning if the link is too long
At long distances, the result is unstable and cannot be solved
we will suggest minimum voltages for the length entered
If you have more than one device per endpoint
change the value in line F
Chinese CCA cat-5 uses 28 awg on the power pairs @ 101 ohms