What is the maximum wattage (and maximum recommended wattage) for a single ribbon cable wire.
I believe the wire size is 28 AWG (maybe 26, but let's call it 28 to be safe), stranded copper. The length of the cable will be no more than 3', and it will either be 40 conductor or 50 conductor ribbon cable (don't worry, I will not be using any 80 conductor IDE cables or anything silly).
Anyway, while googling, I keep finding amp ratings and "Ampacity" charts, but they don't contain any references to the voltage those amps pertain to, and I think they might be AC specific, so it's not super helpful to me. Also, I keep finding completely conflicting information.
I intend to run 12V DC on the cable and am trying to determine how many threads of cable I will need for particular amperages @ 12V DC.
It's my understanding that wattage (V * A) is what matters with wiring -- (i.e. because if the insulators melt at 5A @ 10V then it will also melt at 50A @ 1V, or 1A @ 50V, etc.)
If I know the wattage, I can determine the safe amperage at any DC voltage within the 300V rating.
What is a reliable resource for finding out this kind of information? (Teach a man to fish...)
Is there a difference between "amps" and "Ampacity"? Wikipedia is kind of vague on the subject.