That's a terrible safety hazard, DC arcs don't self extinguish, and DC high voltage tends to cause your muscles to hold on to the source. It's a horribly painf

That's a terrible safety hazard, DC arcs don't self extinguish, and DC high voltage tends to cause your muscles to hold on to the source. It's a horribly painful and slow way to die. --- append For low power dc loads, running completely separate DC circuits wastes a lot of copper for minimal theoretical benefits.