Ever wanted to power machines with a single HV cable? But don't want to have the machines powered all the time. Such as Miners and Mass Fab's.
Behold! The power outlet. Just like a power socket in your house, it allows power to be turned on and off at will. Saving power during the night if you use solar power or if you go on an adventure to find more resources.
Since the MFSU's are buggy in the fact that they emit power once they are full if they have been redstoned, the power outlet seems a proper choice.
It would come in 2 flavours. LV outlet and a MV outlet.
Recipes would be like so:
T L. T is the Low voltage transformer and the L is a Lever.
It would be the same for a MV Outlet but with a MV Transformer