Determining trace/via/wire current capability

[Demon]

I went one further using vias after adding cooling; grounding the VSS pin on the voltage regulator with 3 large vias.

This way it doesn't mess up the smaller vias I have on signal traces and VSS pins on tiny SMD ICs.


CORRECTION:

These are labelled backwards. The 7805 uses the TO-263 package and the Hexfet uses D2Pak (in my project).