Jim and HF9, yes, that is the preferred way to install an outlet, however I don't believe it is a code violation to do it the other way, and at least in our home, it seems most of them are installed with the ground lug down, except for the half-hot outlets, which are inverted so you know they are switched.
Kaiser also makes a right angle female IEC that will exit to thr right side of the bh amps -- has the ground lug furthest from the cable exit. I prefer the orientation of the female iec plug that BH includes with the cable kit though.
-- Jim
Jim Rebman -- recovering audiophile
Equitech balanced power; uRendu, USB processor -> Musette DAC -> 5670 tube buffer -> Finale Audio F138 FFX -> Cain and Cain Abbys near-field).
s.e.x. 2.1 under construction. Want list: Stereomour II
All ICs homemade (speaker and power next)