The splitter cable has a real world equivalent, a Relay for low current situations and a Contactor for high current situations. Due to everyone mistaking that a Splitter Cable is for splitting power to two lines, change it to the term used in the real world for the exact same devices.
Also I feel as of right now it is unbalanced, it gives you EU Loss the same as tin but carries the power of HV cable.
I recommend the following:
Modify the recipe slightly so now instead of HV cables it use coper, gold, or HV cables for tier 1, 2, and 3 power, using the same electrical properties as the source cable. You can give then the names:
Copper Cables - Relay
Gold Cables - Contactor
HV Cables - HV Contactor? (I can't think of a good name)