So, what about cable splitting?
I thought, i can just attach cables to machines without any troubles with IC1-like energy "half-splitting". But i tried to power some macerators with one batbox, and there is a problem
The four macerators at the right side are taking only 1 eu/t, not 2 eu/t, and they are working slower than normal. Batbox can emit up to 32 eu/t, and 14 macerators consumes only 28 eu/t, and there are no energy loss on the system. Is it a bug?
On the right side, the current splits into 3 every step, because you added 2 macerators per section:
16->5.333->1.666->0.555
So, let's try some furnaces.
Setup 1
Each furnace takes 3 eu/t. It is impossible with evenly splitting (In that case furnaces would take 8, 4, 2 amd 1 eu/t)
Let's try another setup.
Only one change. Induction furnace now takes 6 eu/t
Setup 3. OK, it is simple. isn't it? 16 eu/t for induction furnace, and 15 for regular furnaces.
NO!
So, i have no idea, how does it work...
The Energy is split according to the cable loss without taking "idle" machines into account.
The machines connected to the batbox with a shorter (less lossy) cable get more energy.. However there's still an issue with the machines' input energy buffer dimensioning which decreases the effective energy source output power.
The cable loss (length) is the only plausible parameter for distributing energy in an energy network with too much energy demand. If you use the energy consumption it'll turn on some far-away teleporter but leave a macerator right next to the energy source unpowered which doesn't make sense at all.
As I already said there's a bug which causes the batbox to emit less eu/t than it's supposed to in some situations.
First, check consumption of furnace. Give it 3 eu/t. Second - Induction Furnace - 16 eu/t, and then - Macerator - the rest.
So, you use the distance AND consumption. Is it possible?
The energy distributed to the machines should scale down somewhat evenly if the source doesn't have enough power. For example I don't like having an induction furnace running at max power while a low-power machine right next to it can't run at all just because it has a little more loss.
Once the bug is fixed the effect will be much smaller and not noticeable at all in a setup like the one you posted above.
And does that issue display this bug too?
Yes
OK, thank you for the explanation. 
