Fellow Networkers;
     
     Does there exist information about the impedance (at 60 Hz) of typical 
     power line networks here in the US?
     
     In Europe, I know they use a specified reference impedance (at 50 Hz) 
     for flicker testing, which is (0.24 + j0.15) Ohm for line and (0.16 + 
     j0.10) Ohms.  This represents, I understand, the European public 
     network impedance as seen at the point of "common coupling" (i.e., 
     connection to the homes service entrance).
     
     David Tarnowski
     Whirlpool Corporation
     Global Laundry Controls
     St. Joseph, MI
     

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