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No AC power anywhere? Did you check the Service breakers at the source and in your load center?
Where all the Service Breakers are. Flip those off and then back on again. If you still don't have power, start the generator and see if you have it then. IF so, the automatic transfer switch is probably the problem.
Just checking back to see if you might have missed my earlier response to your question or did you get this resolved? If you still need some assistance please let me know and I can offer some direction on how to solve this