Originally Posted by Erin
All depends upon the length of the run. If it was only a few inches then 12 gau might have been ok.
True. I'm not drawing much with my current house/12v loads (VHF/GPS) so it's probably ok for right now.
Both the runs to/from DC-DC 24v/12v converter are ~3ft or a bit less. But, I want them spec'd for max current.
Using Circuit Wizard - Blue Sea Systems
In: 24v, 50A, 6ft., 3% drop, Variable Load, 105 degrees, engine room checked, it says 10 gauge
Out: 12v, 40A, 6ft., 3% drop, Variable Load, 105 degrees, engine room checked, it also recommends 10 gauge
10 gauge seems reasonable.