I think I got it



I want a maximum of 19A to protect the power suplyer, if the "multivuelta" is accidentaly at 0ohm
R = Usc X 8500 / Imax
R = 0,4V x 8500 / 25A = 136 ohm
Following the instrucctions of Txapu I will use max 15A, so:
R = 0,45 x 8500 / 19A = 201 ohm
As it is recomended to use a max of 15a we need a resistence of 255amp in total.
255-200 = 55 ohm for the "resistencia multivuelta"
Many thanks



