You don't say which model of coach you have. With the generator off and coach not plugged in, find and check your breakers, flip the breakers off manually, don't depend on just looking at them because sometimes it's hard to tell for sure. Next check the breakers on your generator, again turn them off manually and then back on. If you get power back but the breakers trip again, STOP, you have a short or loose wire that Ned's to be fixed immediately!
If resetting your breakers doesn't work then you may have a loose wire either at the generator or in your transfer switch. DO NOT work on either of these with power to the coach, you're dealing with 120 volts and high amperage. Without knowing which model you have I can't tell you where your transfer switch may be located, it will probably be near your converter and inverter. Flip the use/store switch off and on, listen for the loud click, that's probably where you will find all your main electrical items.
Hope it's something simple like a breaker!
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