Thanks very much for the replies
Was thinking does ECAM first come up with AC BUS 1 fault or AC Ess bus fault. FCOM drill for AC BUS 1 makes no mention of AC ESS FEED....ALTN.
AC ESS FEED...ALTN comes up in the drill for AC ESS BUS Fault.
Was just wondering what the sequence of ECAM would look like and how long it would take to get the ac ess bus powered