From: arl_123234@hotmail.com   
      
   On 11/03/2014 10:10 AM, Andrew Gabriel wrote:   
   > It's done that way so that any water leak into the cable bundles   
   > or connections which results in electrolysis between the connections   
   > and ground doesn't cause the metal conductors to be corroded away.   
   >   
      
   Hello, and thanks for the prompt reply.  That makes sense but I assume   
   that it applies to cable insulation that is in physical contact with   
   earth ground, not telephone cable mounted on utility poles.  BTW, I have   
   an early 1950's Army publication, TM 11-678, "Fundamentals Of Telephony"   
   that shows the central office battery terminal grounded but doesn't   
   elaborate on whether it's a frame/chassis ground or connected to earth.   
     The TM is very well done (the Army & Navy knew how to write great   
   training/technical manuals back then) albeit dated.  Sincerely,   
      
      
   --   
   J. B. Wood	            e-mail: arl_123234@hotmail.com   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)