One thing that concerned me:
In this post: viewtopic.php?f=37&t=3296&start=340#p486624
Decimus wrote:WIRE SIZES:
Make sure the lead (wires) are 18 gauge or bigger. Or something that doesn't burn with a 10-Amp load. Small wires will burn, large wires will pop the fuse. Secondly, the wires have to be wrapped with electrical tape from head to toe, leaving no gaps. The one in the image above is already coated with gray insulation - that's good. This is to help with fire control.
It seems to be like if we're relying on the resistance of the wire to control the current ("large wires will pop the fuse"), that's just asking for trouble/possible fire. The maximum current should be controlled by a resistor, or some other device in the loop, not the wire gauge. Did I miss here as well?