i dont know if this pertains...or is accurate
but ive heard most current travels on the outer part of the wire so by splitting the wire on the bus would change the current flow and characteristics of the wire(ohms) and actually over heat that percentage of wire. this is my humble opion based on what ive heard and interpting therory.
keeping in mind im just throwing my hat in the ring or putting in my two cents.
H2o
