Back to your original problem. You say you are "only" plugged into 30 Amp, which others have told you is a single-leg of 120 VAC, not two legs, as a 50 Amp design. Therefore, I'm guessing you are using a 50 to 30 amp "dogbone" adapter. These things work by feeding the single 30 Amp leg to BOTH of your 50 Amp legs. By turning on the AC, you probably burned out the adapter at the point of tie-in. One leg (the other one) continues to feed the second AC. But the Primary, which carries the first AC and the converter, evidently burned right there in the adapter. I also agree that you may have smoked the converter, or at least blew the two 30 amp fuses, by reverse battery installation. In most Crossroads, the black is positive, and the white is negative. (think house power, not car battery colors)
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Marty and Martha
2015 Z-1 211RD
2012 Nissan Titan
Dalzell SC
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