All,
Thanks for the responses. Here is the official response from maintenance.
A review of the logbook corrective actions found the following:
"CB 313 located BUS 1 SECL 1 popped. Reset the CB and ran both engines with all systems functioning normally. As a precaution, CB 901 (Left Generator Power) was replaced. Ran engines again with all systems operating normally."
The Left Generator Control circuit breaker accounts for all of your electrical problems, primarily, the aft equipment cooling fan. Airline Safety will continue to monitor this aircraft's performance. If we find a repeat discrepancy, we will involve Tech Service to investigate further and correct.
....Still doesn't answer all of my questions.....the failures were not all at once, they happened in sequence (3-4 minutes between each, approx).
Something else interesting that occurred during the event. I spoke with someone who has been on and teaching the aircraft since introduction and had never heard of this.....during the sequence of events, both ADI's went to black and white display. Odd looking and initially did not know whether info on it was accurate. Eventually, the color came back. A gent from maintenance said that the color "raster guns" will shut down when overheated, and he implied that losing one phase in a three phase system can cause overheating of components.
Just glad we were VFR and not halfway across an ocean.