Hi C4,
I would agree with your logic completely.
If you start to dig deeper (eg NAV 1.34.97 P1) it shows from AC ESS, that ATC 1 (transponder), DME 1, and ADF 1 can be SHED.
From DC ESS the STD BY INST Horizon and compass have "X" (I think they meant to print a "Tick") so they must be powered at all times, but the Altimeter bit can be SHED (surprisingly - afterthought - maybe it's just the vibrator that's shed).
It's a pity Airbus don't explain things in pilot logic.
Last edited by rudderrudderrat; 24th April 2010 at 11:55.
Reason: afterthought