Wait, since when LV machines are more lossy than their higher versions?
Since always. They may be more Efficient but the Lines you need to power them are the worst thing possible and with one LV-Transformer and only 2 Cables going out you have a loss of 11.8% already. It is almost always better to use the HV Generators instead of the LV ones. The LV ones are only worth it if you have some kind of lossless energy line.