Sorry, I am not familiar with the gauge sizing you guy's use. I would consider the use of 50mm cross section size for the cables
. Hopefully you can recognise that size, or convert it. Anyways, It also depends on length. The longer the cable the heavier it needs to be. One important point. It's not so much about the short duration of cranking and the cable heating
, blah blah, it's the fact that if the cable is heating
, then the power that should have been supplied to the starter, is now being disappated into the cable as heat. When you are working with low voltages like 12/24 volt, even a very low cable resistance ends up disappating an enormouse amount of power and this results in a voltage drop at the starter. The result is a starter that does not turn the engine
over fast enough and makes it harder to start. Harder to start means turning the engine
over longer which results in the battery
running out of snuff earlier. Especially if the battery is down a bit to begin with.
My suggestion, go with the heaviest cable you can work with and keep it as short as possible.