[PRCo] PRCo Equipment Separation

[tsquare]

It's well known that PRCo separated the GE PCC's from the Westinghouse 
PCC's by locating them on the North Side and West End (which was as far 
away from Turtle Creek as PRCo could get!).  

Question:  Was there ever any similar separation of the Low-Floors by 
equipment such as HL or K Control, by motors such as Westinghouse or 
GE, or by builder, etc.?

Tom