Yes, try a 250a or 300a fuse.
Double wire from the batteries should be fine. Your alternator will not put out enough to max out a 1/0 cable unless it's 2 alternators or something that puts out well over 250a. Or you're talking a long run
You're not understanding that current pulls on the amp dyno are incorrect. That's literally a sine wave to a static load, WAY more current draw. If you're hard clipping your amp that may be a good indicator of why there's so much heat.
If you're willing to invest money I suggest investing $65 into a portable oscilloscope like the dso nano. a DC clamp meter is also a good investment
Double wire from the batteries should be fine. Your alternator will not put out enough to max out a 1/0 cable unless it's 2 alternators or something that puts out well over 250a. Or you're talking a long run
You're not understanding that current pulls on the amp dyno are incorrect. That's literally a sine wave to a static load, WAY more current draw. If you're hard clipping your amp that may be a good indicator of why there's so much heat.
If you're willing to invest money I suggest investing $65 into a portable oscilloscope like the dso nano. a DC clamp meter is also a good investment