It makes a "parallel fed" and in effect makes the wiring larger. There are other ways to do this. Remember, the 1/4" wide spades in the bulkhead connector FAIL at 20-25A. I used to maintain/ repair HVAC, and a typical electric furnace/ heat pump uses lots of those in the heater. The default heater elements are nominal 20-25A and failure of those flag terminals is NOT rare
And here Mopar was using them for 37-60A or more................
My first bulkhead connector failure was on my 70 RR way back in the early 70's
