Homebrew PCBs

Aluminum has more resistance than copper. That's why we use copper.
Copper is a better electric conductor but more expensive. In High voltage
lines the choice is aluminum because is much cheaper than copper. And to
compensate the extra resistance they make the wires thicker. And is still
cheaper than copper. For houses copper is better because it's thinner and
the resistance is minimal.



> > Does anyone know why aluminum is bad for house wiring?  (real question,
> > not a joke)  Is it that aluminum has a greater thermal expansion ratio
> > than copper, and so the connections worked themselves apart?
> > Thanks
> > Richard