In your other thread where this began you mentioned: You were going to use an automotive cigarette lighter socket so now you plan to use a custom power panel. So since Sunday all of this has changed I assume:lol.
I have a RoadPro Food heater that draws 15A and an Igloo 26Qt mobile fridge that draws 6A.
I'm using a custom power panel I'm installing just to be certain it never overloads.
So I ran a 12GA power cable directly to the battery (and installed a 20A fuse right AT the battery). Of course, there is no need to run a Negative cable to the battery, I just ground it nearby the panel inside the vehicle.
If only I had a quarter for every time I made the most beautiful solder joint....THEN realized I left the shrink out <double FP>
Somehow the solder joint AFTERWARDS was never as purdy
RonI'm going to install a new USB / Power outlet in my vehicle.
It consists of two USB A sockets rated at 2.2Amps each AND one standard size "Cigarette Lighter" socket (amp rating unknown)
To power this, I intend to run positive and negative wires directly from the vehicle battery (fused of course) to this new USB panel.
The total distance is approximately 7 feet.
What I'm wondering is what is the MINIMUM gauge of stranded copper primary wire I can safely use for this?
I have 16ga primary wire on hand but I'm concerned this may not be sufficient. Surely 14ga would be adequate?