AF 990 Powers down intermittently?

Well, I have come to the conclusion that it WAS the loose connections causing the issue. I have been trying to replicate the failure since I fixed the loose wires, and no problems found. I also noticed that when I turned on my generator, the battery voltage ramped up immediately as it is supposed to. I will be continue my testing in the upcoming summer season, and hope I am correct in my assumption.
Thanks for the replies folks! I appreciate your expert opinions!