Hi, does anyone have the working out and answers for this question. thanks
Convert VD to a %
(5X100)/400=1.25%
5%-1.25%=3.75% <-Allowable VD % left
0.0375X230= 8.63V <-Allowable single phase VD left
VC=1000VD/L X I
= (1000 X 8.63)/38X22
=10.32 <-Single phase VC
10.32 X 0.866 = 8.94 <- 3 phase VC
Table 42 Column 6 points at 6mm cable.