I found this info:
Loss is the amount of EU that is subtracted from each packet passing through a length, 1 block, of cable. Because this amount is applied to each packet and not the full quantity of energy, the amperage of a cable/wire will not reduce the overall amount of loss.
E.g., 4 packets of ULV voltage traveling through a 4x tin wire is:
4 packets * (8 EU/p - 4 loss/p) = 16 EU
If its applicable to the gt6 (its gtce wiki)
Then i guess its never a good idea to run low voltage+high current cable unless nessecery as loss will be subtracted from each packets.
Double the current Double the loss i guess?
If thats so then my example with electrolyzers are wrong and i will have 4 packets of 24 eu/t from the 128 to 32 transformer. Will they combine? I guess one will get 2 packets of 24 while other will only get 1 packet each