Doesn't seem to fit the blown fuse problem, but maybe a poor ground connection with the Magnum. I can see that causing it to reset intermittently. I'd put a voltmeter on the + and - terminals of the Magnum and see if the volts vary. Might be hard to see without a scope? If that fuse blows, isn't that a pretty big expense? I have the 2000 watt Magnum and six GC-2 batteries and they draw my battery bank to 11.6 volts very quickly when the induction stove top draws about 80 amps. You Trojans are most likely better but I suspect the voltage draw down is a problem as well.
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