Just want to add an element of quick quizzes to this particular Non-US Forum.
(If that is OK with PaulUK, of course!)
I have a cable, it is run from a Sub-Main to a submersible pump, that is 150m away from the panel/starter.(400V supply to the pump)
The cable terminates at the Weather-Proof Isolator where a flex, then feeds the pump, which is a 3 phase Delta-wired 3kW unit.
The cable is 3C SWA (or N/S) w/ Cu conductors.
The cable is buried direct for most of it's length.
Using your tables of Voltage drop, could you please submit a relevant cable size, for this installation?.
Please bear in mind, you are not doing cable calcs, that I cannot be bothered doing, it only looks like it!.