Emergency Gen runs off the Green HYD and not necessarily the RAT. Don't confuse the Emer Gen operation with the RAT extension.
Before commencing approach you would push the land recovery button to recover a whole lot of stuff you need to land including the Flaps.
This is if the normal AC Power has failed but Engines are running in Emer Elec Config.
If you lost both Engines or G and Y or G and B Hyd the RAT would automatically deploy and power the Emer Gen with reduced output once again in Emer Elec Config.
Then before commencing approach you'd still push the land recovery push button but you'd not get any flaps.....
There is a nice table of operative equipment in the QRH whilst in Emer Elec Config.
Last edited by ACMS; 11th Feb 2015 at 08:59.