airbubba:
Seems like the TWA B-727 FE panel had an 'AC meters' wafer switch in place of the moved essential power switch. That could sure affect your flow if someone yelled 'Check Essential!'
They didn't move the essential power selector. It was the standby power they moved to the overhead.
TWA famously spec'ed toggle switches on the B-727 and other aircraft panels to operate backwards from other carriers. Forward was off for the landing lights on a TWA plane as I recall. Legend had it that it was a Howard Hughes thing.
That one never made sense to me. We believed it was a Gordie Granger thing, not a Howard Hughes thing. But, I could be wrong.
Fortunately, that era didn't get to my last two TWA airplanes, the L1011 and 767.