Wires seem to draw ALL the energy that is available in the system like it's some sort of loop. When branching off a wire to an individual component there can never be more energy than that component can draw (like in real life).
See attached screenshot. The water pump is supposed to draw only 240W but the electrical wire leading to it indicates it is drawing 1.4kW. This shouldn't be able to happen.
Create a simple network with alot of consumers but all branched with individual wires.