Made a little example setup here:ok thanks i'll be able to figure it out from here
Got the Mass Fabricator running on the High Voltage line, the Induction Furnaces on the Medium Voltage line and other Low voltage machines divided up into various groups.
Oh and a little hint: If you prefer using Glass Fibre cables for everything(In 1.4.7 you probably just should with loss rates), you could make the "Painter", craft it with a dye and use it to colour the Glass Fibre cables. This way you can paint your different voltages different colours to avoid making mistakes.